Grade 10 - Foundation of Chemistry

Some students are asked to describe differences between gases and liquids. Three of their suggestions are as follows. Which suggestions are correct?

• 1 only

• 2 only

• 3 only

• 1, 2, 3

In the diagrams, circles of different sizes represent atoms of different elements. Which diagram can represent hydrogen chloride gas (HCl)?

• 
• 
• 
• 

Which pair of substances are both mixtures?

• air; water

• limewater; water

• sea-water; air

• sea-water; ethanol

Which one of the following is a state of matter?

• Liquid

• Particle

• Air

• Creatures

Which one of the following is not a property of gases?

• They have no definite shape

• They have a definite volume

• They have a definite mass

• They can move easily

When water vaporizes at room temperature, it changes into......

• Water vapor

• Fog

• Steam

• Ice

An example of a substance that freeze from liquid state is...

• Dry ice

• Fog

• Steam

• Ice cube

Which one of the following is not a property ofsolids?

• Definite volume

• They do not flow

• No Definite Shape

• They are incompressible

Which one of the following substances is able to vaporize at room temp?

• Ethanol

• Water

• Mercury

• Gold bar

All solids, liquids and gases are made up of

• Particles

• Volume

• Colours

• Temperature