Matter Review

In order to separate the metal bb's from wood chips what property would help to separate them?

• Metal is soluble and wood is not soluble so add water

• Metal is more dense and wood chips are less dense so add water

• Wood chips are a liquid and metal is a gas so they easily separate

• Wood chips are more dense and metal is less dense so add water

Which of these has the least density of all of them?

• Oil

• Water

• Bean

• Rubber

This is a sieve... what mixture would this be best to separate with this tool?

• Mixture of sand and salt

• Mixture of pepper and sugar

• Mixture rocks and metal bb's

• Mixture of sand and rocks

A teacher placed a mixture of water and salt on a hotplate. What will happen when the teacher comes back in 10 minutes?

• Nothing it will stay the same because it's a regular mixture

• The water will evaporate and the salt will stay because this is a solution

• The salt will evaporate and the water will stay because this is a mixture

In a mixture what types of items will be easily separated with a magnet?

• Pop Corn

• Paper clips

• Rice

• Glass marble

• Metal BB's

What is the physical property that describes a substance that dissolves?

• Magnetism

• Relative Density

• Solubility

• Conductors

Are all mixtures solutions?

• Yes all mixtures are solutions because they all dissolve

• Yes all mixtures are solutions because they don't all dissolve

• No not all mixtures are solutions because only some mixtures dissolve

• No not all mixtures are solutions because none dissolve

What happens when you mix in kool-aid and sand into water?

• The kool-aid stays as a solid and the sand dissolves

• The sand and the kool-aid turn the water red because they both dissolve

• The sand turns into a liquid

• The sand stays as a solid and the kool-aid dissolves turning the water red

When a substance dissolves into water what does that mean?

• The substance maintains its physical property

• The substance spreads evenly into the water

• The substance floats on top of the water

• The substance sinks to the bottom of the water

Kool-aid is mixed into the water. What changes in the physical properties will you see?

• The water turns red

• The water is clear

• The kool-aid dissolves

• The kool-aid turns clear

• The glass turned to a liquid