CHEMISTRY 3

Question 1

Substance that when dissolved in water, gives a solution that is not electrically conducting

Answer 1

Non-electrolyte

Question 2

Chemical formula that shows how atoms are bonded to one another in a molecule

Answer 2

Structural formula

Question 3

Compounds containing CN ion

Answer 3

Cyanides

Question 4

Crystalline carbon that is soft, black, slippery solid that possess metallic luster and conduct electricity.

Answer 4

Graphite

Question 5

All are properties of liquid except one.

Answer 5

Do not mix by diffusion

Question 6

Physical appearance of sodium.

Answer 6

Silver metal

Question 7

Which of the ff. statements regarding organic substance is FALSE?
a. organic substance generally do not dissolve in water
b. organic substance generally dissolve in high concentration acids
c. organic matter is generally stable at very high temperature
d. all organic matter contains carbon

Answer 7

organic matter is generally stable at very high temperature

Question 8

Strongest type of bonds

Answer 8

Covalent

Question 9

Condition of a liquid electrolyte is measured in terms of ______________.

Answer 9

Specific Gravity

Question 10

An organic compound that contains the hydroxyl group.

Answer 10

Alcohol

Question 11

Electrolyte is a solution of water and __________.

Answer 11

Sulfuric Acid

Question 12

Which of the ff. is not a property of inorganic compounds
a. high melting and boiling points
b. conduct electric current
c. mostly soluble in water
d. usually flammable and combustible

Answer 12

Usually flammable and combustible

Question 13

Performed an experiment in 1887 that yielded the charge to mass ratio of the electrons

Answer 13

J.J. Thomson

Question 14

Which of the ff. is a crystalline form of carbon?
a. diamond
b. all of the above
c. fullerenes
d. graphite

Answer 14

All of the above

Question 15

In copper atom, the valence ring contains how many electrons?

Answer 15

1

Question 16

When all of the atoms of a molecule are the same, the substance is called _______.

Answer 16

Compound

Question 17

A process of putting back the lost electrons to convert the ion back to a metal.

Answer 17

Reduction

Question 18

Carbon used to removed undesirable odors from air.

Answer 18

Charcoal

Question 19

Physical appearance of sodium chloride

Answer 19

White crystal

Question 20

Proposed the Quantum Theory in 1900.

Answer 20

Max Planck

Question 21

Which of the ff. is not true?
a. Proton is an elementary quantity of positive electricity
b. An atom is composed of a central nucleus and orbital electron
c. Electron is an elementary quantity of negative electricity
d. The mass of an electron is heavier than that of a proton.

Answer 21

The mass of an electron is heavier than that of a proton.

Question 22

Element known as the lightest metal.

Answer 22

Lithium

Question 23

Refers to how closely individual measurement agree with each other.

Answer 23

Precision

Question 24

A reaction in which one molecule adds to another

Answer 24

Additional Reaction

Question 25

Which of the ff. has the ff. highest atomic number?

Answer 25

Plutonium

Question 26

The aromatic hydrocarbons contain structural unit called _____________.

Answer 26

Benzene

Question 27

Carboxylic acid that is found in grapes.

Answer 27

Tartaric Acid

Question 28

Opposite of Alkali

Answer 28

Acid

Question 29

In electrochemistry, oxidation is a loss of

Answer 29

Electron

Question 30

Ions that are not involved in the overall reaction

Answer 30

Spectator ions

Question 31

Which of the ff. elements and compounds is unstable in its pure form?

Answer 31

Sodium

Question 32

Hydrocarbons that contain one or more double bonds.

Answer 32

Alkene

Question 33

Carboxylic Acid that is found in coconut oil.

Answer 33

Lauric Acid

Question 34

Compounds that contain halogens

Answer 34

Halides

Question 35

Carbon used to manufacture tires of car.

Answer 35

Carbon Black

Question 36

All are properties of gaseous state except one

Answer 36

Mixed uniformly when soluble in on another

Question 37

A _________ is a cell designed to produce electric current and can be recharged

Answer 37

Secondary Cell

Question 38

Refers to how closely a measured value agrees with each other.

Answer 38

Accuracy

Question 39

When hydrocarbon consists of carbon links that form a ring, it is classified as _________.

Answer 39

Cyclic

Question 40

Hydrocarbons that contain one or more triple bonds

Answer 40

Alkyne

Question 41

Inorganic compounds A. Are generally soluble in non-polar solvents B. Are generally non-flammable C. All of the above D. Have presence of ionic bond

Answer 41

All of the above

Question 42

Attraction between like molecules

Answer 42

Cohesion

Question 43

Simplest Alkene, which is a plant hormon that plays important role in seed germination and ripening of fruits.

Answer 43

Ethene

Question 44

Other term for Alkanes

Answer 44

Paraffins

Question 45

When a solid has crystalline structure, the atoms arranged in repeating structures

Answer 45

Unit Cell

Question 46

Which of the ff. gases is usually used as a refrigerant?

Answer 46

Dimethyl Ether

Question 47

A substance that dissociates in solutions to produce positive and negative ions

Answer 47

Electrolyte

Question 48

Deuteron is A. a nucleus containing a neutron and a proton B. an electron with a positive charge C. A neutron plus two protons D. A helium molecules

Answer 48

a nucleus containing a neutron and a proton

Question 49

A crystal imperfection characterized by regions of severe atomic misfit where atoms are not properly surrounded by neighbor atoms.

Answer 49

Dislocation

Question 50

Which of the ff. statement is FALSE? a. The net rate at which a reaction proceeds from left to right is equal to the forward rate minus the reverse rate. b. In general, as reaction products are formed, they react with each other and reform reactants. c. The different rate is the mathematical expression that shows how the rate of a reaction depends on volume. d. At equilibrium, the net reaction rate is zero

Answer 50

The different rate is the mathematical expression that shows how the rate of a reaction depends on volume.

Question 51

Physical appearance of chlorine

Answer 51

Yellowish gas

Question 52

Oxygen comprises what percent in mass in the earth's crust?

Answer 52

49.5

Question 53

What percent of human body is carbon?

Answer 53

18%

Question 54

Distance pattern in space which the atoms of metal arranged themselves when they combine to produce a substance of recognizable size.

Answer 54

Space-lattice

Question 55

A six-carbon ring with three alternating double bonds, or closely related rings or rings of similar nature where nitrogen replaces carbon in one or more ring positions.

Answer 55

Benzene

Question 56

An alloy of mercury with another metals or metals

Answer 56

Amalgram

Question 57

The organic compounds are related to each other by a common feature involving certain arrangement of atoms called __________.

Answer 57

Functional Groups

Question 58

Simplest and most commonly encountered class of organic compounds

Answer 58

Hydrocarbons

Question 59

Amount of electricity a battery can produce is controlled by the __________.

Answer 59

Strength of Acid

Question 60

An ion containing a central metal cation bonded to one or more molecules or ions

Answer 60

Complex ion

Question 61

Reduction in an electrochemical cell always takes place at the ___________.

Answer 61

Cathode

Question 62

Organic Compound that contains oxygen but not in the carbonyl group.

Answer 62

Alcohols and Ethers

Question 63

Simplest alkane which is a major component of nature gas.

Answer 63

Methane

Question 64

Formula for Dinitrogen Pentoxide

Answer 64

N2O5

Question 65

Compounds containing CN ion

Answer 65

Cyanides

Question 66

Compound distinguished by a high molar mass, ranging into thousands and millions of grams, and made up of many repeating cells

Answer 66

Polymer

Question 67

The device which measures the acid content of the cell __________.

Answer 67

Hydrometer

Question 68

A molecular orbit that is of lower energy and higher stability than the atomic orbitals from which it was formed

Answer 68

Bonding Molecular Orbital

Question 69

Hydrocarbons that contains only single bonds

Answer 69

Alkanes

Question 70

Compounds with the same molecular formula but with different structural formula.

Answer 70

Isomers

Question 71

Simplest Alkyne which is a highly reactive molecule.

Answer 71

Acetylene or Ethene

Question 72

Naming of Hydrocarbons, it refers to a side chain that is formed by removing a hydrogen from an alkane.

Answer 72

Alkyl Group

Question 73

Represents the number of protons in the nucleus of an atom

Answer 73

Atomic Number

Question 74

Common carboxylic acid that is found in yogurt.

Answer 74

Lactic Acid

Question 75

General term that refers to an allowed energy state for an electron in the atom.

Answer 75

Quantum energy level

Question 76

Organic compound that contains nitrogen

Answer 76

Amines and Amides

Question 77

It is equal to the fraction of the isotope in a naturally occuring sample of the element. a. the electromagnetivity of the isotope b. the relative abundance of the isotope c. the quantum number of the isotope d. the chemical atomic weight of the isotope

Answer 77

the relative abundance of the isotope

Question 78

When a hydrocarbon consists of carbon links that form a long, straight or branched chain, it is classified as _____.

Answer 78

Cyclic Type

Question 79

Minimum amount of energy required to initiate a chemical reaction

Answer 79

Activation Energy

Question 80

It is formed when hydrocarbons such as methane are heated in the presence of very little oxygen.

Answer 80

Carbon Black

Question 81

Which of the ff. elements is NOT radioactive?

Answer 81

Cobalt

Question 82

A compound that contains at least one amino group and at least one carboxyl group.

Answer 82

Amino Acid

Question 83

Hydrocarbons that do not contain the benzene group or the benzene ring

Answer 83

Aliphatic Hydrocarbon

Question 84

Salts of weak bases dissolving in water to form acidic solution

Answer 84

Hydrolysis

Question 85

Carbon that is produced when coal is strongly heated in the absence of air.

Answer 85

Coke

Question 86

What is a coal that has been previously burned in an oxygen-poor environment?

Answer 86

Coke

Question 87

In 1956, the International Union of Pure and Applied Chemistry (IUPAC) devised a systematic way of naming compounds called _____.

Answer 87

System of Nomenclature

Question 88

A molecular orbit that is of higher energy and lower stability than the atomic orbitals from which it was formed

Answer 88

Antibonding Molecular Orbital

Question 89

It is formed when a carboxylic acid and an alcohol react, with water as byproduct.

Answer 89

Ester

Question 90

Based on the type of bond existing between two carbon atoms, hydrocarbons are classified

Answer 90

Saturated and Unsaturated

Question 91

An element maybe defined as a substance with all atoms of which have the same _____________.

Answer 91

Atomic Number

Question 92

Oxidation in an electrochemical cell always takes place at the

Answer 92

Anode

Question 93

Organic compounds A. are generally soluble in non-polar systems B. all of the above C. have presence of covalent bond D. are usually flammable and combustible

Answer 93

All of the above

Question 94

Type of carbon that is produced when wood is heated intensely in the absence of air

Answer 94

Charcoal

Question 95

Organic Compounds that contain the hydroxyl as the functional group and are considered derivatives of water.

Answer 95

Alcohols

Question 96

Performed an experiment in 1887 that yielded the charge to mass ratio of the electrons

Answer 96

J.J. Thomson

Question 97

Other term for Alkenes

Answer 97

Olefins

Question 98

Aromatic Hydrocarbon that is used as a component of moth balls.

Answer 98

Naphthalene

Question 99

Reactions generally proceed faster at high temperatures because of which of the ff.? a. activation energy is less b. molecules are less energetic c. molecules collide more frequently d. the molecules collide more frequently and activation energy is less

Answer 99

the molecules collide more frequently and activation energy is less

Question 100

Which of the ff. is most likely to prove that a substance is inorganic? A. The substance floats in water. B. Analysis shows that the substance contains hydrogen C. The substance is heated together with copper oxide and the resulting gases are found to have no effect on limestone. D. The substance evaporates in room temperature and pressure

Answer 100

The substance is heated together with copper oxide and the resulting gases are found to have no effect on limestone.

Question 101

A molecule that does not possess a dipole moment

Answer 101

Nonpolar Molecule

Question 102

The compounds, benzene, napthalene and anthracene are examples of what hydrocarbons?

Answer 102

Aromatic Hydrocarbons

Question 103

Organic compound in which two hydrocarbon groups that can be aliphatic or aromatic are attached to one oxygen atom.

Answer 103

Ethers