Definitions- Chemical+ Physical Change

Question 1

Corrodibility

Answer 1

How easily a substance can break down

Question 2

Flammability

Answer 2

How easily a substance is set on fire

Question 3

Toxicity

Answer 3

How poisonous a substance may be

Question 4

Light Sensitivity

Answer 4

Whether a substance reacts in light or not

Question 5

Reactivity

Answer 5

Whether a substance reacts or not

Question 6

Synthesis Reactions

Answer 6

Occur when two chemicals combine to form one larger chemical

Question 7

Decomposition Reactions

Answer 7

Occur when one chemical breaks up to form two or more smaller chemicals

Question 8

Combustion Reactions

Answer 8

Occur when you’ve got something organic reacting with oxygen to form carbon dioxide gas and water vapour.

Question 9

Single Displacement Reactions

Answer 9

Occurs when the atoms of a pure element replace those of an element in a chemical compound

Question 10

Double Displacement Reactions

Answer 10

Occurs when two cations of two ionic compounds switch places

Question 11

Acid Base Reactions/ Neutralization Reactions

Answer 11

Double Displacement Reactions in which water is formed

Question 12

Endothermic

Answer 12

Absorbs heat and becomes cold

Question 13

Exothermic

Answer 13

Loses heat and becomes hot

Question 14

Precipitate

Answer 14

A solid that appears from two liquids

Question 15

Chemical Reactions

Answer 15

A process where reactants are changed into products

Question 16

Reactants

Answer 16

A substance that goes under change during a reaction

Question 17

Product

Answer 17

A substance formed due to a chemical reaction

Question 18

Aqueous

Answer 18

A solution in which the solvent is water