Chemical Reactions Vocabulary Quiz

Question 1

Process by which 1 or more substances undergo change to produce 1 or more different substances:

Accepted Answer

chemical reaction

Question 2

Reaction in which a single compound breaks down to form 2 or more simpler substances:

Accepted Answer

decomposition reaction

Question 3

States that mass is neither created nor destroyed in ordinary chemical & physical changes:

Accepted Answer

law of conservation of mass

Question 4

Starting materials in a chemical reaction:

Accepted Answer

reactants

Question 5

Shorthand notation for a compound or diatomic element using chemical symbols and numbers:

Accepted Answer

chemical formula

Question 6

Minimum amount of energy needed for substances to react:

Accepted Answer

activation energy

Question 7

States that energy is neither created nor destroyed:

Accepted Answer

Law of Conservation Energy

Question 8

Reaction in which ions in 2 compounds switch places:

Accepted Answer

double-replacement reaction

Question 9

Substance that slows down or stops a chemical reaction:

Accepted Answer

inhibitors

Question 10

Shorthand description of chemical reaction using chemical formulas & symbols:

Accepted Answer

chemical equation

Question 11

Physical or chemical change in which energy is absorbed:

Accepted Answer

endothermic

Question 12

Reaction in which an element takes the place of another element in a compound:

Accepted Answer

single-replacement reaction

Question 13

Substance that speeds up a reaction without being permanently charged:

Accepted Answer

catalyst

Question 14

Reaction in which two or more substances combine to form a single compound:

Accepted Answer

synthesis reaction

Question 15

Substances formed from a chemical reaction:

Accepted Answer

products

Question 16

Physical or chemical change in which energy is released or removed:

Accepted Answer

exothermic

Questions 16