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Maria Traboulsy 712 > Science Test Study 2 > Flashcards

Science Test Study 2 Flashcards

1
Q

Compounds are formed as a result of ______.

a chemical change
filtration
a physical change
evaporation

A

a chemical change

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2
Q

A molecule is the smallest part of _________.

a substance
an electron
a proton
an atom

A

a substance

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3
Q

A mixture of salt and water can be separated by _______.

freezing
filtering
melting
evaporating

A

evaporating

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4
Q

What are the products of cellular respiration?

H2O+CO2+energy
glucose+oxygen
glucose+H2O+energy
H2O+sunlight+CO2

A

water+carbon dioxide+energy

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5
Q

A mixture of oil and iron can be separated by _________.

filtration
evaporation
dissolving
magnetism

A

magnetism

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6
Q

Which of the following is a solution?

pure water
an oatmeal-raisin cookie

vinegar (3% Acetic Acid, 97% Water)
copper

A

vinegar (3% Acetic Acid, 97% Water)

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7
Q

When chlorine compounds are dissolved in pool water, what is water?

the alloy
the solvent
the solution
the solute

A

the solvent

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8
Q

A solid might become LESS soluble in a liquid when you decrease what?

particle size
pressure
temperature
container size

A

temperature

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9
Q

A solution is prepared by adding 100g of solid sodium hydroxide, NaOH, to 1,000 mL of water. What is the solid NaOH called?

solution
solute
solvent
mixture

A

solute

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10
Q

The starting substances that chemically bond in a chemical reaction are called _______.

catalysts
oxides
reactants
products

A

reactants

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11
Q

Substances formed as result of chemical reactions are ________.

catalysts
oxides
reactants
products

A

products

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12
Q

A _________ is a process in which new substances are formed.

chemical reaction
catalyst
reactant
subscript

A

chemical reaction

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13
Q

make sure the mass of the reactants and products are the same

To check whether an equation is balanced, ______

add the number of reactants to the number of products

count the number of each type of atom on each side
check to see if the reaction is endothermic or exothermic

A

count the number of each type of atom on each side

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14
Q

Raisins in cereal is an example of a ______.

homogeneous mixture
heterogeneous mixture
solvent
salt

A

heterogeneous mixture

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15
Q

Water at room temperature can hold less salt than if the water is ________.

hot
cold
cool
carbonated

A

hot

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16
Q

What are the products of photosynthesis?

glucose+sunlight+oxygen
glucose+sunlight+carbon dioxide

glucose+oxygen
glucose+carbon dioxide

A

glucose + oxygen

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17
Q

The bigger numbers found in front of a molecule indicating the number of molecules of that substance are called ___________.

compounds
subscripts
superscripts
coefficients

A

coefficients

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18
Q

The smaller numbers found after each element that indicates the number of elements in each compound are called _________.

subscripts
superscripts
coefficients
numbers

A

subscripts

19
Q

Which of the following are reactants of photosynthesis?

glucose+oxygen
carbon dioxide+sunlight+H2O
carbon dioxide+H2O+energy

sunlight+H2O

A

carbon dioxide+sunlight+H2O

20
Q
A
21
Q

A molecule is the smallest part of _________.

a substance
an electron
a proton
an atom

A

a substance

22
Q

A mixture of salt and water can be separated by _______.

freezing
filtering
melting
evaporating

A

evaporating

23
Q

What are the products of cellular respiration?

water + sunlight + carbon dioxide
water + carbon dioxide + energy

glucose + oxygen
glucose + water + energy

A

water + carbon dioxide + energy

24
Q

A mixture of oil and iron can be separated by _________.

filtration
evaporation
dissolving
magnetism

A

magnetism

25
Q

Which of the following is a solution?

pure water
an oatmeal-raisin cookie
vinegar (3% Acetic Acid, 97% Water)

copper

A

vinegar (3% Acetic Acid, 97% Water)

26
Q

When chlorine compounds are dissolved in pool water, what is water?

the alloy
the solvent
the solution
the solute

A

the solvent

27
Q

A solid might become LESS soluble in a liquid when you decrease what?

particle size
pressure
temperature
container size

A

temperature

28
Q

A solution is prepared by adding 100g of solid sodium hydroxide, NaOH, to 1,000 mL of water. What is the solid NaOH called?

solution
solute
solvent
mixture

A

solute

29
Q

The starting substances that chemically bond in a chemical reaction are called _______.

catalysts
oxides
reactants
products

A

reactants

30
Q

Substances formed as result of chemical reactions are ________.

catalysts
oxides
reactants
products

A

products

31
Q

A _________ is a process in which new substances are formed.

chemical reaction
catalyst
reactant
subscript

A

chemical reaction

32
Q

add the number of reactants to the number of products

To check whether an equation is balanced, ______

make sure the masses of the reactants and products are the same

count the number of each type of atom on each side
check to see if the reaction is endothermic or exothermic

A

count the number of each type of atom on each side

33
Q

Raisins in cereal is an example of a ______.

homogeneous mixture
heterogeneous mixture
solvent
salt

A

heterogeneous mixture

34
Q

Water at room temperature can hold less salt than if the water is ________.

hot
cold
cool
carbonated

A

hot

35
Q

What are the products of photosynthesis?

glucose + sunlight + oxygen
glucose + sunlight + carbon dioxide

glucose + oxygen
glucose + carbon dioxide

A

glucose + oxygen

36
Q

The bigger numbers found in front of a molecule indicating the number of molecules of that substance are called ___________.

compounds
subscripts
superscripts
coefficients

A

coefficients

37
Q

The smaller numbers found after each element that indicates the number of elements in each compound are called _________.

subscripts
superscripts
coefficients
numbers

A

subscripts

38
Q

Which of the following are reactants of photosynthesis?

glucose + oxygen
carbon dioxide + sunlight + water

carbon dioxide + water + energy
sunlight + water

A

carbon dioxide + sunlight + water

39
Q

The compound C8 H10 N4 O2 has how many atoms?

10
18
24
20

A

24

40
Q

Which cell organelle takes in carbon dioxide and water and is found at the bottom of epidermal cells on leaves of plants?

chlorophyll
chloroplasts
stomata
mitochondria

A

stomata

41
Q

What cell organelle is where oxygen helps break down glucose during cellular respiration?

chloroplasts
mitochondria
chlorophyll
cytoplasm

A

mitochondria

42
Q

The only balanced equation shown is _____.

2Na + Cl2 –> 2NaCl
P4O10 + H2O –> H3PO4
Na + Cl2 –> NaCl

H2O –> H2 + O2

A

2Na + Cl2 –> 2NaCl

43
Q

To separate a mixture of salt and sand, what would be the FIRST separation technique you would use?

evaporation
filtration
dissolving using water
magnetism

A

dissolving using water

44
Q

Which of the following would dissolve the fastest?

sugar cubes in iced tea

sugar cubes in hot tea
granulated sugar in iced
granulated sugar in hot tea

A

granulated sugar in hot tea

Maria Traboulsy 712 (7 decks)

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