Chapter 8

Question 1

Chemical properties

Answer 1

Chemical properties define the mixing of different substances to form new substance in many forms.

Question 2

Physical properties

Answer 2

Physical properties are defined as matter that can be observed without chemical changes. This may require the 5 senses such as hearing, smelling, tasting, touching, seeing and hearing

Question 3

Reaction rate

Answer 3

The rate in which a reaction that’s place

Question 4

Catalyst

Answer 4

Chemicals that help to start a reaction take place

Question 5

Enzymes

Answer 5

Chemicals that speed up the reaction rate in which something goes boom but isn’t SES in the cause.

Question 6

Chemical change

Answer 6

The change that forms a new substance.

Question 7

Evaporate

Answer 7

The changing of state caused by the heating of water that turns it to gas

Question 8

State

Answer 8

The condition of the substance

Question 9

Rusting

Answer 9

A brown substance that takes effect on iron due to oxygen and waa tear

Question 10

Corrosion

Answer 10

A chemical reaction that eats away metals

Question 11

Burning

Answer 11

Combustion of oxygen in a flame

Question 12

Oxidation

Answer 12

Chemical reaction involving, the loss of elections by a substance

Question 13

Fossil fuels

Answer 13

Remains of dead substances or living things that have been compressed over 1000s of years

Question 14

Plastic

Answer 14

A synthetic substance that is capable of moulding