Question

A scientist is working in a lab and accidentally combines two liquids that quickly form a solution. Which process could be used to separate the two liquids?(1 point)
Responses

waiting for the two liquids to separate
waiting for the two liquids to separate

passing the liquids through a filter to collect one of them
passing the liquids through a filter to collect one of them

collecting one of the liquids with a spoon
collecting one of the liquids with a spoon

heating the liquids and letting one boil away first

Answer 1

Which property could allow a student to easily separate sand and iron filings?(1 point)
Responses

melting point
melting point

boiling point
boiling point

solubility
solubility

magnetism

Answer 2

You are worried that a solid substance has dissolved in a beaker of water in a lab. What would be a way to separate the substance from the water?(1 point)
Responses

Pass the solution through a filter to let the dissolved substance separate.
Pass the solution through a filter to let the dissolved substance separate.

Boil the water away, leaving the substance behind in the beaker.
Boil the water away, leaving the substance behind in the beaker.

Pour the liquid along a rough surface that would catch the solid particles but not the water.
Pour the liquid along a rough surface that would catch the solid particles but not the water.

Use a magnet to draw out the solid substance from the water.

Answer 3

A beaker contains a mixture of sand and salt. A student adds water to dissolve the salt. Which processes can be used to separate out the sand and salt?(1 point)
Responses

filtration to collect the sand and distillation to collect the salt
filtration to collect the sand and distillation to collect the salt

filtration to collect both the sand and the salt
filtration to collect both the sand and the salt

distillation to collect both the sand and the salt
distillation to collect both the sand and the salt

distillation to collect the sand and filtration to collect the salt

Answer 4

The most effective process to separate the two liquids that have formed a solution would be:

**heating the liquids and letting one boil away first.**

This method, known as distillation, works by taking advantage of the different boiling points of the liquids.

Answer 5

The property that could allow a student to easily separate sand and iron filings is:

**magnetism.**

Iron filings are magnetic, so they can be separated from the non-magnetic sand using a magnet.

Answer 6

The best way to separate the solid substance that may have dissolved in water is:

**Boil the water away, leaving the substance behind in the beaker.**

This method works if the solid substance is non-volatile and does not evaporate with the water. The remaining substance will be left in the beaker after the water has evaporated.

Answer 7

The correct answer is:

**filtration to collect the sand and distillation to collect the salt.**

In this process, filtration first separates the sand from the saltwater solution, collecting the sand in the filter and allowing the saltwater to pass through. Then, distillation can be used to evaporate the water, leaving the salt behind.