What is atmosphere?

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a state of matter; gases will expand freely to fill a container and have no fixed shape or volume

a chemical element with the atomic number 7; it is a colourless, odourless, unreactive gas that forms about 78% of the Earth's atmosphere

a colourless, odourless reactive gas with the atomic number 8 which is used in respiration

the number or amount of components which make up a larger whole

the gases surrounding the Earth or another planet

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What is gas?

Choose 1 answer

a chemical element with the atomic number 7; it is a colourless, odourless, unreactive gas that forms about 78% of the Earth's atmosphere

a state of matter; gases will expand freely to fill a container and have no fixed shape or volume

a colourless, odourless reactive gas with the atomic number 8 which is used in respiration

the number or amount of components which make up a larger whole

the gases surrounding the Earth or another planet

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What is composition?

Choose 1 answer

a chemical element with the atomic number 7; it is a colourless, odourless, unreactive gas that forms about 78% of the Earth's atmosphere

the gases surrounding the Earth or another planet

a state of matter; gases will expand freely to fill a container and have no fixed shape or volume

a colourless, odourless reactive gas with the atomic number 8 which is used in respiration

the number or amount of components which make up a larger whole

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What is nitrogen?

Choose 1 answer

a state of matter; gases will expand freely to fill a container and have no fixed shape or volume

the number or amount of components which make up a larger whole

a chemical element with the atomic number 7; it is a colourless, odourless, unreactive gas that forms about 78% of the Earth's atmosphere

a colourless, odourless reactive gas with the atomic number 8 which is used in respiration

the gases surrounding the Earth or another planet

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What is oxygen?

Choose 1 answer

a colourless, odourless reactive gas with the atomic number 8 which is used in respiration

the gases surrounding the Earth or another planet

the number or amount of components which make up a larger whole

a chemical element with the atomic number 7; it is a colourless, odourless, unreactive gas that forms about 78% of the Earth's atmosphere

a state of matter; gases will expand freely to fill a container and have no fixed shape or volume

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Answer incorrect

Look at the slide below to work out the answer.