Chemistry

Question 1

Word equation for incomplete combustion:

Answer 1

Fuel + Oxygen –> Carbon Monoxide + Carbon + Water

Question 2

Name the reaction type when heat is used to break up a substance

Answer 2

Thermal Decomposition

Question 3

Name the reaction type when a more reactive element takes the place of a less reactive element

Answer 3

Displacement

Question 4

Name the reaction type between acids and alkalis

Answer 4

Neutralisation

Question 5

What does the term ‘exothermic’ mean

Answer 5

A reaction that releases heat into the surroundings

Question 6

What is meant by the term ‘soluble’

Answer 6

A substance that can dissolve

Question 7

What is the separation technique used to separate an insoluble solid from a liquid

Answer 7

Filtration

Question 8

What is the separating technique that recovers a solute from a solution

Answer 8

Crystallistaion/ Evaporation

Question 9

What is the separation technique that separates a mixture of liquids with different boiling points

Answer 9

Simple Distillation

Question 10

What is the separation technique that separates a mixture of liquids with different solubility

Answer 10

Chromatography

Question 11

What 3 subatomic particles make an atom

Answer 11

Electron, Proton and Neutron

Question 12

What is an element

Answer 12

One type of atom

Question 13

What is a compound

Answer 13

Two or more types of atom chemically bonded together

Question 14

Which number in the periodic table provides information on the number of protons in an atom

Answer 14

Proton Number

Question 15

What is meant by the conservation of mass

Answer 15

Matter cannot be created or destroyed