Chapter 6

Question 1

Reactant

Answer 1

A reactant is a substance or molecule that participates in a chemical reaction.

Question 2

Product

Answer 2

A product is 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. Isooctane-oxygen

Question 5

Endothermic reaction

Answer 5

A chemical reaction that requires heat. Hydrated barium hydroxide and ammonium nitrate

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 the 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

An oxidation reduction reaction is a type of chemical reaction that involves a transfer of electrons between two species.

Question 13

Radical

Answer 13

A radical is an atom, molecule, or ion that has unpaired valence electrons

Question 14

Reduced

Answer 14

A reduction is a chemical reaction that involves the gaining of electrons.

Question 15

Oxidized

Answer 15

Combine or become combined chemically with oxygen.

Question 16

Chemical equation

Answer 16

The symbolic representation of a chemical reaction in the form of symbols and formula.

Question 17

Mole ratio

Answer 17

The ratio of moles of one substance to the moles of another substance

Question 18

Coefficient

Answer 18

A number or symbol multiplied with a variable or an unknown quantity in an algebraic term.

Question 19

Law of Conservation of Mass

Answer 19

It states that mass in an isolated system is neither created nor destroyed.

Question 20

Law of Definite Proportions

Answer 20

It states that a given chemical compound always contains its component elements in fixed ratio and does not depend on its source and method of preparation.

Question 21

Catalyst

Answer 21

The increase in the rate of a chemical reaction due to the participation of an additional substance.

Question 22

Enzyme

Answer 22

A substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction

Question 23

Substrate

Answer 23

A substance or layer that underlies something or on which some process occurs in particular

Question 24

Chemical equilibrium

Answer 24

It is the state in which both reactants and products are present in concentrations which have no further tendency to change with time.