Science Chapter 7 Form 1

The air is made up of _____% Nitrogen.

• 87

• 78

• 76

Tags

NGSS.MS-ESS2-6

How to test the presence of Oxygen?

• Use lime water

• Use glowing wooden splinter

• Use burning wooden splinter

• Use litmus paper

How to test the presence of Hydrogen?

• Use burning wooden splinter

• Use glowing wooden splinter

• Use litmus paper

• Use limewater

Oxygen helps in __________.

(more than 1 answer)

• Photosynthesis

• Combustion

• Make dry ice

• Make carbonated drinks

• Respiration

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

____________ helps in photosynthesis.

• Inert gas

• Oxygen

• Carbon dioxide

• Nitrogen

Tags

NGSS.MS-LS1-6

What is air?

• Element

• Compound

• Mixture

Which is NOT the product of combustion?

• Carbon Dioxide

• Heat

• Light

• Oxygen

Can combustion can only occur without any of the fuel,

oxygen and heat?

• Yes

• No

Carbon + Oxygen → ____________

• Water

• Nitrogen

• Carbon dioxide

• Hydrocarbon

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Why air is considered a mixture ?

• Each gas has no color, so cannot be differentiate

• Each gas still shows its original properties when separated.