Year 8 Term 1 GL

Front

Hassan rolls four balls down a 12 m long slope. Which statement is true?

Back

Ball A is faster than ball D.

Front

Why is bending the wire an example of a physical change?

Back

The bent wire can be straightened again.

Front

Adam investigates how many drops of water could fit on a 1p coin before spilling. He conducts three trials using the same 1p coin. These are the results: What should Adam do next?

Back

conduct more trials using the same 1p coin

Front

Which is an example of a chemical change?

• adding vinegar to sodium bicarbonate to form a gas

,

• water evaporating into the air

,

• sugar dissolving in water

,

• crushing wheat grains to form flour

Back

adding vinegar to sodium bicarbonate to form a gas

Front

The model below shows a molecule of silk made by a spider. What does each sphere in the model represent?

Back

an atom

Front

A drop of red food colouring is added to a bowl of water. After 5 minutes all of the water is red. Which process causes this to happen?

Back

chromatography

Front

The table shows the change in pH when 100 ml of different unknown substances is added to 100 ml of hydrochloric acid (HCl). Which unknown solution completely neutralises the HCl?Options: A, B, C, D

Back

B

Front

Why does Emma not add any liquid to beaker 1?

Back

to provide a control for the investigation

Front

Why does the temperature of the pack increase when the liquid and powder combine?

Back

There is an exothermic reaction.

Front

A jeweller melts gold to make jewellery. As the gold melts, the mass...

Back

stays the same.