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Science > (MIDTERM) All Quiz questions (7-14) > Flashcards

(MIDTERM) All Quiz questions (7-14) Flashcards

1
Q

Anything that has mass and takes up space can be considered as
a) matter
b) substances
c) density
d) mixtures

A

a) matter

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2
Q

Also known as the building blocks of matter, these tiny particles are 1,000,000 times smaller than the width of human hair.
a) electrons
b) neutrons
c) atoms
d) protons

A

c) atoms

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3
Q

If you were to investigate the nucleus of an atom, you would likely find
a) a cloud of electrons
b) neutrons and protons
c) neutrons only
d) neutrons and electrons

A

b) neutrons and protons

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4
Q

Matter with a composition that is always the same would be expected in a
a) substance
b) heterogenous mixture
c) homogeneous mixture
d) solute

A

a) substance

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5
Q

Iron, Calcium, and Carbon are all examples of
a) elements
b) solutions
c) mixtures
d) compounds

A

a) elements

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6
Q

What would you call H20 and C02
a) elements
b) compounds
c) mixtures
d) Hydrogen Peroxide and Carbon Dioxide

A

b) compounds

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7
Q

In order for a substance, containing two or more atoms of different elements, to be considered a compound, the different atoms must be
a) physically combined
b) the same size
c) neutral
d) chemically combined

A

d) chemically combined

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8
Q

Carbon -14 is a great example of an
a) isotope
b) element
c) compound
d) large atom

A

a) isotope

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9
Q

H20 and C02 are both examples of a
a) chemical formula
b) element
c) mixtures
d) solution

A

a) chemical formula

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10
Q

A ceasar salad is a great example of a
a) homogeneous mixture
b) compound
c) solution
d) heterogenous mixture

A

d) heterogenous mixture

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11
Q

When you mix a powdered drink like Gatorade with water, the mix is referred to as the
a) compound
b) solvent
c) solution
d) solute

A

d) solute

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12
Q

What is the ability of an object to be dissolved
a) heatability
b) conductivity
c) magnetism
d) solubility

A

d) solubility

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13
Q

Which of the following best classifies physical properties
a) size dependant and size independent
b) mass and neutrons
c) solutes
d) length dependant and length independant

A

a) size dependant and size independent

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14
Q

What formula do we use to determine density
a) volume/mass
b) weight/volume
c) mass/volume
d) mass x volume

A

c) mass/volume

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15
Q

If a substance has a density of 5g/mL and a mass of 50g, what would the volume need to be?

A

10mL

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16
Q

What is another word for homogeneous mixture?

A

solution

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17
Q

What would be a good example of a physical change
a) ice melting into a pool of water
b) roasting marshmallows
c) silver tarnishing
d) a change in shape

A

a) ice melting into a pool of water

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18
Q

When you have a physical change you will never end up with
a) a change in state
b) a change in size
c) a new substance
d) a change in shape

A

c) a new substance

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19
Q

Adding thermal energy to matter may cause
a) particles to freeze
b) particles to remain the same
c) a new substance to form
d) the state to change

A

d) the state to change

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20
Q

The boiling point of matter is the point at which
a) a solid becomes a liquid
b) a liquid becomes a solid
c) a liquid becomes a gas
d) a solid becomes a gas

A

c) a liquid becomes a gas

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21
Q

What do we call it when a gas becomes a liquid
a) condensation
b) evaporation
c) sublimation
d) boiling

A

a) condensation

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22
Q

Freezing and Melting are reverse processes, but they
a) occur at different temperatures
b) occur at the same temperature
c) never require a change in energy
d) never happen to matter

A

b) occur at the same temperature

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23
Q

If a sample of water has a mass of 100g and you add 10g of solute, you will have a final solution with a total mass of 110g. This is because of
a) the law of dissolving
b) the law of solubility
c) the law of conservation of mass
d) the law of states of matter

A

c) the law of conservation of mass

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24
Q

Which never changes during a physical change
a) states of matter
b) volume
c) temperature
d) total mass

A

d) total mass

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25
Q

What is a good example of a chemical property
a) ability to burn
b) ability to change states
c) ability to change size
d) ability to freeze

A

a) ability to burn

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26
Q

When a small branch of a tree decomposes in the forest. it is an example of
a) a change of state
b) a chemical change
c) a physical change
d) a physical property

A

b) a chemical change

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27
Q

Which one of these is proof of a chemical change
a) bubbles
b) the formation of the same substance
c) the formation of a new substance
d) added energy

A

c) the formation of a new substance

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28
Q

When atoms collide and rearrange and bond into new combinations, you have
a) a physical change
b) a decrease in energy
c) deposition
d) a new substance

A

d) a new substance

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29
Q

What do we call the substances on the left side of a chemical equation, before the reaction occurs
a) products
b) chemical symbols
c) the yield
d) reactants

A

d) reactants

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30
Q

What do we call the new substances formed after a chemical reaction
a) the yield
b) reactants
c) products
d) chemical symbols

A

c) products

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31
Q

The arrow in a chemical formula is read as
a) reactant
b) product
c) a symbol
d) yields

A

d) yields

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32
Q

Higher temperatures and concentrations usually increase the rate of a reaction, but you can increase the rate of a reaction by increasing?

A

surface area

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33
Q

In our lab, we made sure to fill the graduated cylinder to the 170mL mark. The water level in that cylinder is determined by the ____________ line.

A

meniscus

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34
Q

In our lab on density, we were able to determine the volume of an irregular shape (the bolt) by measuring the __________ of water

A

displacement

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35
Q

Higher temperatures and surface area usually increase the rate of a reaction, but you can increase the rate of a reaction by increasing the?

A

concentration

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36
Q

Physical properties can be either ________ or _________.

A

size dependant or size independent

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37
Q

what is the formula for density?

A

d = m/v

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38
Q

If a substance had a mass of 33 g and a volume of 11mL, what would the density of that substance be?

A

3mL

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39
Q

What is another way to represent volume besides using the mL measurement?
a) gallons
b) g
c) cm3
d) g/mL

A

c) cm3

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40
Q

Watermelon sales increase during the months of May, June, and July. Drownings also increase during the same three months, consistently. You could say…
a) they are negatively correlated
b) they have a casual relationship
c) the watermelon sales are making people drown
d) they are positively correlated

A

d) they are positively correlated

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41
Q

when you mix table salt with water, the salt is the
a) solvent
b) solution
c) solute
d) compound

A

c) solute

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42
Q

Matter that has a definite shape and definite volume would most likely be
a) a solid
b) a liquid
c) a gas
d) a plasma

A

a) a solid

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43
Q

A diamond and a chunk of coal are both made up of carbon atoms, the difference is in how those carbon atoms are arranged. A diamond has what kind of structure
a) expensive
b) crystalline
c) amorphous
d) hard

A

b) crystalline

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44
Q

Matter that has a definite volume but no definite shape would be
a) a solid
b) a liquid
c) a gas
d) a plasma

A

b) a liquid

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45
Q

What effect does raising the temperature of honey have on its viscosity
a) reduces it
b) no effect
c) increases it
d) eliminates it

A

a) reduces it

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46
Q

In order for water to super cool, it requires
a) pure water with limited nucleation sites
b) tap water
c) sublimation
d) condensation

A

a) pure water with limited nucleation sites

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47
Q

Matter that has no definite shape or definite volume
a) a solid
b) a liquid
c) a gas
d) a plasma

A

c) a gas

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48
Q

The gas state of water or gasoline is called a
a) vapor
b) gas
c) mixture
d) solution

A

a) vapor

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49
Q

All particles that make up matter have motion and therefore they generate
a) kinetic energy
b) atoms
c) fusion
d) compounds

A

a) kinetic energy

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50
Q

How does a solid become a gas without being a liquid
a) deposition
b) sublimation
c) evaporation
d) condensation

A

b) sublimation

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51
Q

How does a gas become a solid without becoming a liquid
a) deposition
b) sublimation
c) evaporation
d) condensation

A

a) deposition

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52
Q

What process is the opposite of evaporation
a) deposition
b) sublimation
c) condensation
d) expansion

A

c) condensation

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53
Q

The amount of force applied per unit area is called
a) conservation of energy
b) volume
c) molecular theory
d) pressure

A

d) pressure

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54
Q

What unit of measurement do we use for pressure
a) P
b) kPa
c) pa
d) Kpa

A

b) kPa

55
Q

Which gas law would explain a semi truck’s tire blowing out on the freeway if they travel from the north (cooler temps) to the south ( higher temps )

A

Charles’s law

56
Q

Which Greek philosopher was noted for challenging the popular idea of matter, but was ignored for nearly 2,000 years
a) Aristotle
b) Biden
c) Plato
d) Democritus

A

d) Democritus

57
Q

Which scientist revisited the idea of empty space making up much of matter and rejected the idea of earth, water, air, and fire
a) Rutherford
b) Bohr
c) Dalton
d) Thomson

A

c) Dalton

58
Q

Atoms are very small, so small that you could easily fit up to _____ carbon atoms on the period of this sentence
a) 7.5 million
b) 7.5 trillion
c) 7.5 billion
d) 7.5 thousand

A

b) 7.5 trillion

59
Q

Which of these scientists first proposed that atoms contain electrons which have a negative charge
a) Thomson
B) Rutherford
c) Dalton
d) Bohr

A

a) Thomson

60
Q

Which one of these scientists is noted for the discovery of the nucleus of the atom
a) Thomson
b) Rutherford
c) Bohr
d) Dalton

A

b) Rutherford

61
Q

Which one of these scientists proposed that electrons move in circular orbits around the nucleus
a) Bohr
b) Rutherford
c) Chadwick
d) Dalton

A

a) Bohr

62
Q

Which atomic model added the idea of the electron cloud
a) Rutherford Model
b) Modern Model
c) Dalton Model
d) Bohr Model

A

b) Modern Model

63
Q

Just as atoms are made of smaller parts, protons & neutrons are also made of smaller parts called
a) beta
b) alpha
c) elements
d) quarks

A

d) quarks

64
Q

If you know the number of protons, you will also be able to determine the number of
a) electrons
b) neutrons
c) atoms
d) isotopes

A

a) electrons

65
Q

The number of protons in an atom determines that element’s
a) neutrons
b) atomic number
c) atomic mass
d) number of isotopes

A

b) atomic number

66
Q

Atoms of the same element that have different numbers of neutrons are called
a) quarks
b) neutrides
c) elements
d) isotopes

A

d) isotopes

67
Q

Carbon has 6 protons, and the isotope C-13 must have how many neutrons
a) b
b) 7
c) 8
d) 9

A

b) 7

68
Q

Why is the atomic mass number of most elements always written as a decimal number
a) it is difficult to measure
b) they are really small
c) it is an average
d) it is a sum

A

c) it is an average

69
Q

Becquerel, Pierre, and Marie Curie are noted for the accidental discovery of
a) atomos
b) periodic table
c) radioactivity
d) isotopes

A

c) radioactivity

70
Q

What type of ray does not contain particles, but they do contain a lot of energy
a) beta
b) alpha
c) gamma
d) x

A

c) gamma

71
Q

The first periodic table, created by Russian chemist and teacher Dmitri Mendeleev, was organized by the physical property
a) atomic mass
b) color
c) number of electrons
d) melting point

A

a) atomic mass

72
Q

Alkali metals are in the first column of the periodic table. We call these columns
a) nonmetals
b) groups
c) periods
d) metals

A

b) groups

73
Q

Patterns in properties are easily observed in the rows of the table, we call these
a) groups
b) metals
c) periods
d) metalloids

A

c) periods

74
Q

In the early 20th century, scientist Henry Moseley solved the problem with Mendeleev’s table by ordering things based on
a) neutrons
b) metals
c) chemical symbols
d) atomic number

A

d) atomic number

75
Q

An element key shows the name, symbol, state of matter, atomic number, and
a) reaction level
b) image
c) neutron number
d) mass number

A

d) mass number

76
Q

Which group represents the majority of the table
a) nonmetals
b) metalloids
c) metals
d) liquids

A

c) metals

77
Q

Which group represents gases at room temperature
a) oxygen group
b) nonmetals
c) metals
d) metalloids

A

b) nonmetals

78
Q

The group that contains semiconductors is the
a) metalloids
b) silicons
c) metals
d) nonmetals

A

a) metalloids

79
Q

All of the elements to the left of group 12 are metals except
a) Hydrogen
b) Helium
c) Oxygen
d) Gold

A

a) Hydrogen

80
Q

What describes a metal’s ability to reflect light
a) shean
b) luster
c) malleability
d) ductility

A

b) luster

81
Q

A piece of gold with the mass of a paper clip can be pulled into wire that is more than 3 Km, this is the property of
a) luster
b) malleability
c) ductility
d) conductivity

A

c) ductility

82
Q

The metals in group 2 are called
a) halogens
b) transition metals
c) alkali metals
d) alkaline earth metals

A

d) alkaline earth metals

83
Q

The metals in groups 3-12 are named the
a) metalloids
b) alkali metals
c) middle metals
d) transition metals

A

d) transition metals

84
Q

Metals that are very reactive and have low densities are found in the group named
a) transition metals
b) metalloids
c) alkali metals
d) alkaline earth metals

A

c) alkali metals

85
Q

96% of the mass of your body comes from just four elements in which group
a) metals
b) nonmetals
c) metalloids
d) transition metals

A

b) nonmetals

86
Q

What is the most common element found in the universe, making up roughly 75% of the elemental mass
a) hydrogen
b) oxygen
c) carbon
d) nitrogen

A

a) hydrogen

87
Q

This group can react with metals and form salts, they all end with -ine
a) metalloids
b) halogens
c) noble gasses
d) nonmetals

A

b) halogens

88
Q

This group will not naturally react with the other elements
a) nonmetals
b) halogens
c) noble gases
d) alkali metals

A

c) noble gases

89
Q

Which of the following are the most responsible for allowing elements to form compounds
a) protons
b) nucleus
c) valence electrons
d) neutrons

A

c) valence electrons

90
Q

Which one of these can form single, double, and triple bonds
a) covalent bonds
b) ionic bonds
c) simple bonds
d) metallic bonds

A

a) covalent bonds

91
Q

What kind of bonds are made between two nonmetals
a) ionic bonds
b) double bonds
c) single bonds
d) covalent bonds

A

d) covalent bonds

92
Q

When you have covalent bonds, the valence electrons are going to be
a) loss
b) shared
c) gained
d) equal

A

b) shared

93
Q

A Hydrogen atom will never need more than
a) 2 ve to be satisfied
b) 8 ve to be satisfied
c) Hydrogen is a noble gas, so it is already satisfied
d) any number will do so since it is in group 1

A

a) 2 ve to be satisfied

94
Q

Which of the following are the most responsible for allowing elements to form compounds
a) protons
b) nucleus
c) valence electrons
d) neutrons

A

c) valence electrons

95
Q

The following bonds are formed between a metal and a nonmetal
a) covalent bonds
b) ionic bonds
c) metallic bonds
d) double bonds

A

b) ionic bonds

96
Q

What do you call a nonmetal that has a charge from gaining valence electrons
a) anion
b) neutral
c) covalent bonds
d) cation

A

a) anion

97
Q

The nonmetals in ionic bonds will always have what kind of charge
a) negative
b) positive
c) neutral
d) no charge

A

a) negative

98
Q

The first element in an ionic bond is always going to have what kind of charge
a) positive
b) negative
c) neutral
d) no charge

A

a) positive

99
Q

What do we call the process by which atoms of two or more substances rearrange to form one or more new substances
a) chemical reaction
b) physical reaction
c) physical change
d) chemistry

A

a) chemical reaction

100
Q

Which one of these is not evidence of a chemical change
a) formation of bubbles
b) change in odor
c) change in color
d) change in shape

A

d) change in shape

101
Q

Which one of these represents a chemical equation
a) H20
b) H
c) Hydrogen has 1 valence electron
d) 2H2 + O2 –> 2H2O

A

d) 2H2 + O2 –> 2H2O

102
Q

The substances produced by the chemical reaction are called
a) reactants
b) products
c) coefficients
d) subscripts

A

b) products

103
Q

The reason you will always have the same elements on both sides of the yield sign in a chemical equation is due to what law
a) law of conservation of matter
b) law of conservation
c) law of the land
d) Boyle’s Law

A

a) law of conservation of matter

104
Q

A chemical reaction in which the substance combines with oxygen and releases energy is named
a) oxygen reaction
b) thermal
c) heat
d) combustion

A

d) combustion

105
Q

Reactions that absorb energy are named
a) chemical reaction
b) physical reaction
c) endothermic reaction
d) exothermic reaction

A

c) endothermic reaction

106
Q

Enzymes are considered natural
a) catalysts
b) inhibitors
c) reactants
d) products

A

a) catalysts

107
Q

Because they keep food from spoiling so soon, preservatives in foods are considered
a) enzymes
b) catalysts
c) nutrients
d) inhibitors

A

d) inhibitors

108
Q

If you don’t know the difference between reactants and products, coefficients and subscripts, balancing equations can get very
a) convoluted
b) recapitulated
c) simple
d) inadvertent

A

a) convoluted

109
Q

What is a substance
a) matter that is made of different compositions
b) A kind of matter that is always made of the same combination of atoms
c) a kind of matter that is always made of different combinations of atoms
d)matter that is made of 5 types of substances

A

b) A kind of matter that is always made of the same combination of atoms

110
Q

The two types of substances are
a) compounds and acids
b) acids and elements
c) compounds and elements
d) bases and acids

A

c) compounds and elements

111
Q

What are the two types of compounds
a) Ionic and Covalent
b) ionic and triple
c) covalent and double
d) covalent and acidic

A

a) Ionic and Covalent

112
Q

What is a diatomic molecule
a) matter made of the same substances
b) a molecule bonded to itself
c) three atoms physically bonded together
d) two atoms chemically bonded together

A

d) two atoms chemically bonded together

113
Q

The taste acids provided in food is
a) bitter
b) sour
c) salty
d) sweet

A

b) sour

114
Q

The acids in our stomach normally ____________ food.
a) break down
b) combine
c) mix
d) compact

A

a) break down

115
Q

When acids react with bases, they form
a) natural solutions
b) artificial solutions
c) neutral solutions
d) green solutions

A

c) neutral solutions

116
Q

Bases are __________ when mixed with water
a) slippery
b) soapy
c) hot
d) acidic

A

a) slippery

117
Q

The taste bases provided in food is
a) sour
b) sweet
c) bitter
d) hot

A

c) bitter

118
Q

pH is also known as
a) potential hydrogen
b) powerful hydrogen
c) peaceful hydrogen
d) perfect hydrogen

A

a) potential hydrogen

119
Q

All hydro carbons will contain
a) hydrogen
b) hydrogen and carbon
c) carbon
d) carbon and oxygen

A

b) hydrogen and carbon

120
Q

Methane ends in -ane because
a) only single bonds are present
b) double bonds are present
c) triple bonds are present
d) all of the above

A

a) only single bonds are present

121
Q

The following are forms of pure carbon
a) graphite
b) diamond
c) fullerene
d) all of the above

A

d) all of the above

122
Q

Butane and isobutane have the same molecular formula and the same ratio of carbon atoms to hydrogen atoms but different structural formulas because they are
a) polymers
b) monomers
c) isomers
d) polar

A

c) isomers

123
Q

Hydrocarbons can form three different chains
a) straight, branched, rings
b) straight, curved, squares
c) straight, branched, diamonds
d) straight, curved, rings

A

a) straight, branched, rings

124
Q

Hydrocarbons that contain at least one double bond and all other single bonds are called an
a) alkane
b) alkaline
c) alkyne
d) alkene

A

d) alkene

125
Q

An unsaturated hydrocarbon contains one or more double or triple bonds. If it contains a triple bond it is referred to as an
a) alkyne
b) alkane
c) alkene
d) alkaline

A

a) alkyne

126
Q

The 10 root words used to name hydrocarbons are used based on the
a) ratio of carbon to hydrogen
b) number of hydrogen atoms
c) number of bonds
d) number of carbon atoms in longest chain

A

d) number of carbon atoms in longest chain

127
Q

If a hydrocarbon has a ring chain structure, it will get the prefix
a) ringo
b) round
c) orbital
d) cyclo

A

d) cyclo

128
Q

In the functional groups, hydroxyl groups will substitute a hydrogen with
a) Br
b) -OH
c) -COOH
d) Fl

A

b) -OH

129
Q

The halide group uses what types of elements to substitute for hydrogen
a) halogens
b) halides
c) alkalines
d) transition metals

A

a) halogens

130
Q

The carboxyl group replaces a hydrogen with this substitute and makes it an acid
a) -OH
b) -COOH
c) Halogens
d) Oxygen

A

b) -COOH

131
Q

What is the process of joining monomers with polymers
a) bonding
b) polymerization
c) synthesis
d) decomposition

A

b) polymerization

132
Q

How should you describe the molecular shape that is not linear or planar
a) triangular
b) tetrahedral
c) conical
d) flat

A

b) tetrahedral

133
Q

Sugars, starches, and cellulose are the biological molecules we call
a) carbohydrates
b) sweets
c) nucleic acids
d) lipids

A

a) carbohydrates

Science (18 decks)

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