Gases

What is a flammable gas that forms from decaying organic matter and material in land fills?

• methane

• propane

• oxygen

• carbon

Tags

NGSS.MS-LS2-3

This is a greenhouse gas released into the atmosphere from farms that apply large amounts of nitrogen-based fertilizers to help crops grow.

• nitrous oxide

• carbon dioxide

• H2O

• greenhouse gasses

This molecule is made from two atoms of oxygen and one carbon atom. This is also produced from breathing and burning certain substances called fossil fuels.

• CFC

• UV

• H20

• CO2

Tags

NGSS.MS-LS2-3

If greenhouse gases in the atmosphere increase, Earth's temperature will __________________.

• increase

• decrease

• stays the same

• all of these are correct

Tags

NGSS.MS-ESS2-6

NGSS.MS-ESS3-5

This is an unreactive gas with a melting point of -272 ^oC and a boiling point of -269 ^oC. It does not conduct electricity and so it is a ​ (a)   . It is very light. It is used in airships and inflate balloons. It is ​ (b)  

• non-metal

• helium

• metal

• nitrogen

• hydrogen

A gas's molecules _______________

• do not move

• move in place

• flow around each other

• move away from each other

Tags

NGSS.MS-PS3-5

What increases when you compress a gas
(a)  

• pressure

• time

• condensation

• vapor

Answer explanation

Pressure is greatly increased when you compress a gas!!

Tags

NGSS.MS-PS3-4

Gases have ...

• Definite shape and definite volume.

• No definite shape and no definite volume.

• Definite volume but no definite shape.

Tags

NGSS.MS-PS1-4

A gas has ​​ (a)   particle motion and ​ (b)   attractive forces between particles.

• fast

• low

• slow

• high

Tags

NGSS.MS-PS1-4

This is a transparent gas with a melting point of -219 ^oC and a boiling point of -183 ^oC. It does not conduct electricity and hence it is a ​ (a)   . It is essential for respiration in most living things and in burning. It is ​ (b)   .

• non-metal

• oxygen

• metal

• helium

• nitrogen

• carbon dioxide

Tags

NGSS.MS-PS1-4