Online Test — Matter & Mixtures
10 Questions • 12 min • Chapter MCQ
12:00
Question 1 of 10
hard
Adding heat usually makes particles move…
Slower and closer
Faster and spread apart
Backwards
To sleep
Explanation: Heat makes particles move faster and spread out.
Question 2 of 10
medium
Heating a solid enough can change it into a…
Liquid
Gas at once
Rock
Star
Explanation: Enough heat melts a solid into a liquid.
Question 3 of 10
easy
A substance that dissolves is said to be…
Insoluble
Soluble
Frozen
Hard
Explanation: Things that dissolve are soluble.
Question 4 of 10
easy
In a mixture, the things mixed usually keep their own…
Weight lost
Colour only forever
Names lost
Properties
Explanation: Parts of a mixture keep their own properties.
Question 5 of 10
hard
The way we separate a mixture depends on the ___ of the things in it.
Properties
Colour only
Price
Names
Explanation: We choose a method based on the parts' properties.
Question 6 of 10
easy
We can separate sand from water by…
Burning
Drinking it
Freezing the sand
Filtering
Explanation: Filtering traps the sand and lets water through.
Question 7 of 10
medium
Passing water through a cloth or filter removes…
All taste
Mud and visible dirt
Its weight
Its colour only
Explanation: Filtering removes mud and floating dirt.
Question 8 of 10
easy
Which of these is a mixture?
A single grain of sugar
Pure water
Salad of many vegetables
Pure gold
Explanation: A salad is a mixture of different things.
Question 9 of 10
medium
Sea water is not fit for drinking because it has too much dissolved…
Air
Sugar
Salt
Oil
Explanation: Sea water is too salty to drink.
Question 10 of 10
medium
Sugar dissolves faster when the water is…
Oily
Icy and still
Frozen
Warm and stirred
Explanation: Warmth and stirring speed up dissolving.