MEDIUM
Lower Secondary Stage 7
IMPORTANT
Earn 100
Sort the materials below into conductors and insulators of electricity.
iron nail wooden spoon clay brick copper wire
Write the words in the correct column:
Important Questions on Properties of Matter and Materials
MEDIUM
Lower Secondary Stage 7
IMPORTANT
Add ticks to the table to show whether a substance is a solid, liquid, or gas at (at room temperature). The first row is done for you.
| Solid | Liquid | Gas | |
| Tomato sauce |
✔ |
||
| Bubble in a glass of fizz drink |
|
||
| Oil | |||
| Sand |
|
MEDIUM
Lower Secondary Stage 7
IMPORTANT
Use the words from the box to complete the diagram.
| evaporating melting energy particles boiling heat |
MEDIUM
Lower Secondary Stage 7
IMPORTANT
Look at the two vases. State which vase is made from non-metal. Use the evidence in the images to explain your answer.
Vase B is made from a _____. It has a crack, which shows that the material is _____.
Vase A is shiny and B is not. Generally metals are _____ and non-metals are _____.
MEDIUM
Lower Secondary Stage 7
IMPORTANT
Chen is about to make dinner. The first thing he needs to do is boil some water. He notices that there are two empty pans. One is made from copper metal and the other is made from ceramic. Which one should he use? Give a reason for your answer.
MEDIUM
Lower Secondary Stage 7
IMPORTANT
The box contains some words/phrases used to describe the properties of different materials.
| malleable brittle hard conductor of electricity opaque insulator of heat transparent |
Choose two words/phrases to describe a metal cable.
_____ and _____.
EASY
Lower Secondary Stage 7
IMPORTANT
It fills the space and can be compressed
MEDIUM
Lower Secondary Stage 7
IMPORTANT
It is brittle and conducts electricity
EASY
Lower Secondary Stage 7
IMPORTANT
It can be opaque or transparent, is a good insulator of heat and electricity, and is flexible.
