Year 8 Snap, Crackle and Pop

Question 1

To show carbon dioxide is present you would

Accepted Answer

bubble through limewater

Question 2

Cooking a cake shows what type of reaction:

Accepted Answer

endothermic

Question 3

Which of the following is not an element?

Accepted Answer

water

Question 4

The diagram best represents the arrangement of atoms in a:

Accepted Answer

solid

Question 5

Which of these changes is not a chemical change?

Accepted Answer

dissolving sugar in coffee

Question 6

Which of these is a physical change?

Accepted Answer

dissolving sugar

Question 7

The process whereby a gas changes to a liquid is called:

Accepted Answer

condensation

Question 8

An element is shiny in appearance. What is this property?

Accepted Answer

lustre

Question 9

A lighted match is placed near a test tube with gas, a loud ‘pop’sound was heard. The gas is

Accepted Answer

hydrogen

Question 10

Two clear liquids are mixed together and they turn blue. This shows:

Accepted Answer

chemical change as the colour changed

Question 11

What substance looks shiny, conducts electricity and they bend when hit with a hammer.

Accepted Answer

metal

Question 12

If an element is on the left hand side of the periodic table then it is a?

Accepted Answer

metal

Question 13

When a gas changes directly into a solid

Accepted Answer

sublimation

Question 14

An alloy is a?

Accepted Answer

more than 1 metal fused together

Question 15

The atomic number of an element is the:

Accepted Answer

number of protons in an atom

Question 16

A reaction which releases heat is:

Accepted Answer

exothermic

Question 17

Which of the following is a compound?

Accepted Answer

Water

Question 18

Malleability is:

Accepted Answer

able to be bent or be moulded

Question 19

Matter can exist in three states. These are:

Accepted Answer

gases, liquids, solids

Question 20

What is wrong with the following diagram

Accepted Answer

too many electrons

Question 21

Which of the following statements best describes a chemical change?

Accepted Answer

new substances are formed

Question 22

Who is the referred to as the "father of modern experimental chemistry"?

Accepted Answer

Dalton

Question 23

The number of neutrons and protons is called the:

Accepted Answer

mass number

Question 24

A sign of a solution is

Accepted Answer

transparent

Question 25

Atoms are made up from three sub-atomic particles. These are called:

Accepted Answer

protons, neutrons, electrons

Question 26

Which of the following are not alloys?

Accepted Answer

iron

Question 27

A precipitate is a chemical that is:

Accepted Answer

an insoluble liquid mixture

Question 28

Of the following is not a compound found at home

Accepted Answer

chutney

Question 29

The chemical formula for the compound salt is NaCl. Salt contains the elements:

Accepted Answer

sodium and chlorine

Question 30

All matter is made up from small particles called:

Accepted Answer

atoms

Year 8 Snap, Crackle and Pop

Questions 30

Year 8 Snap, Crackle and Pop

Questions 30