Is carbon dioxide a pure substance or a mixture?

What process is necessary to do if you want to separate two liquids or a solid and a liquid?

What happens when you boil water and ethanol?

• Water evaporates first

• Ethanol evaporates first

• Both evaporate at the same time

• Nothing happens

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the name of the place that accumulates salt because the water had been evaporated?

• Solution

• Evaporation

• Pond

• Seawater

Tags

NGSS.MS-ESS2-2

What are the name and the type of mixture that creates the salt and the water creates?

• Solution and homogeneous

• Homogeneous and heterogeneous

• Solution and heterogeneous

• Solution and pond

Which is the boiling point of water?

What object do we need to separate metals from other components?

• Filtre

• Magnetic separation

• Water

• Magnet

What types of mixtures exist?

What the facemask does NOT let pass?

• Water

• Germs

• Air

• Oxygen

Tags

NGSS.MS-ETS1-3

What happens if we heat the water?

• It becomes ice

• It becomes liquid

• It becomes vapor

Tags

NGSS.MS-PS1-4