Chapter 6

Question 1

Reactant

Answer 1

A substance or molecule that participates in a chemical reaction.

Question 2

Product

Answer 2

A substance that forms in a chemical reaction

Question 3

Chemical energy

Answer 3

The energy released when a chemical compound reacts to produce new compounds.

Question 4

Exothermic reaction

Answer 4

A chemical reaction in which heat is released to the surroundings. Burning a candle

Question 5

Endothermic reaction

Answer 5

A chemical reaction that requires heat. water boiling

Question 6

Synthesis reaction

Answer 6

A reaction in which two or more substances combine to form a new compound.

Question 7

Decomposition reaction

Answer 7

A reaction in which a single compound breaks down to form two or more simpler substances.

Question 8

Electrolysis

Answer 8

The process in which an electric current is used to produce a chemical reaction, such as the decomposition of water.

Question 9

Combustion reaction

Answer 9

The oxidation reaction of an organic compound, in which heat is released.

Question 10

Single displacement reaction

Answer 10

A reaction in which one element or radical takes that place of another element or radical in a compound.

Question 11

Double displacement reaction

Answer 11

A reaction in which a gas, a solid precipitate, or a molecular compound forms from the apparent exchange of atoms or ions between two compounds.

Question 12

Oxidation reduction reaction

Answer 12

Any chemical change in which one species is oxidized and another species is reduced also called redox reaction.

Question 13

Radical

Answer 13

An organic group that has one or more electrons available for bonding.

Question 14

Chemical equation

Answer 14

A representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products.

Question 15

Mole ratio

Answer 15

The relative number of moles of the substances required to produce a given amount of product in a chemical reaction.

Question 16

Oxidized

Answer 16

To be combine chemically with oxygen

Question 17

Coefficient

Answer 17

A multiplier or factor that measures a property.

Question 18

Law of conservation of mass

Answer 18

Mass is not created or destroyed it just changes forms.

Question 19

Law of definite proportions

Answer 19

A chemical compound always contains its component elements in a ratio and it doesn’t depend on the source or method of preparation

Question 20

Catalyst

Answer 20

Increases the rate of chemical reaction without permanently changing

Question 21

Enzyme

Answer 21

A substance that acts like a catalyst to bring a biochemical reaction.

Question 22

Substrate

Answer 22

A substance that underlies something

Question 23

Chemical equilibrium

Answer 23

The state where both reactants and products are there in concentrations and don’t have any more tendency to change over time.

Question 24

Reduced

Answer 24

Becomes a weaker state.