Gases Around Us
Preview only Sign up to use worksheet Signup now
  • Introduction
PREVIEW ONLY. SIGN UP TO USE WORKSHEET.

 

There are lots of different types of gas. Gases have different properties, just as solids and liquids do, and we use them for different purposes.

Because many gases are colourless and odourless (they have no smell), we need to be careful when using them. Some useful gases are also poisonous.

The natural gas we use to heat our homes and cook with has an odour added to it before it is piped into our homes so that we can detect leaks. We use natural gas because it burns easily to provide us with energy, but it is also explosive.

Without oxygen life on earth would be very different! Organisms use oxygen to release energy from food in the process called respiration. Green plants make their own food using light to combine carbon dioxide with water to make sugars. This is called photosynthesis.

  • Question 1
PREVIEW ONLY. SIGN UP TO USE WORKSHEET.

The air around is mainly made up of which two gases?

carbon dioxide

chlorine

nitrogen

oxygen

helium

  • Question 2
PREVIEW ONLY. SIGN UP TO USE WORKSHEET.

Which materials do plants use to make sugars?

oxygen and water

nitrogen and water

carbon dioxide and water

glucose and oxygen

  • Question 3
PREVIEW ONLY. SIGN UP TO USE WORKSHEET.

Living organisms use which gas for respiration?

nitrogen

carbon dioxide

oxygen

natural gas

  • Question 4
PREVIEW ONLY. SIGN UP TO USE WORKSHEET.

Which of these gases is used for heating and cooking?

natural gas

oxygen

unnatural gas

hydrogen

  • Question 5
PREVIEW ONLY. SIGN UP TO USE WORKSHEET.

One of these gases makes the bubbles in fizzy drinks. Which one is it?

oxygen

carbon dioxide

air

helium

  • Question 6
PREVIEW ONLY. SIGN UP TO USE WORKSHEET.

Which gas are party balloons filled with to make them float? 

methane

hydrogen

helium

oxygen

  • Question 7
PREVIEW ONLY. SIGN UP TO USE WORKSHEET.

Sophie says that helium-filled balloons float because helium is a light gas which is less dense than air.

 

Is she right, or wrong? What do you think?

right

wrong

  • Question 8
PREVIEW ONLY. SIGN UP TO USE WORKSHEET.

What name do we give gases which are used during operations so that patients do not feel pain and 'go to sleep'? 

laughing gas

anaesthetic gas

knock-out gas

poisonous gas

  • Question 9
PREVIEW ONLY. SIGN UP TO USE WORKSHEET.

Natural gas has a property which makes it both useful and dangerous. What is it?

it has a smell

it dissolves in water

it is lighter than air

it burns easily

  • Question 10
PREVIEW ONLY. SIGN UP TO USE WORKSHEET.

Seth is designing a safety poster about what to do if you think there is a natural gas leak in your home.

 

Which TWO of these dos and don'ts should he include?

Don't turn on or off any electrical switches

Don't open the doors and windows

Do collect your favourite DVDs

Do leave the house immediately

Do go looking for the source of the leak

Progress