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
heating the liquids and letting one boil away first
heating the liquids and letting one boil away first
waiting for the two liquids to separate
waiting for the two liquids to separate
collecting one of the liquids with a spoon
collecting one of the liquids with a spoon
passing the liquids through a filter to collect one of them
heating the liquids and letting one boil away first
Which property could allow a student to easily separate sand and iron filings?(1 point)
Responses
solubility
solubility
melting point
melting point
magnetism
magnetism
boiling point
magnetism
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
Use a magnet to draw out the solid substance from the water.
Use a magnet to draw out the solid substance from the water.
Boil the water away, leaving the substance behind in the beaker.
Boil the water away, leaving the substance behind in the beaker.
Pass the solution through a filter to let the dissolved substance separate.
Pass the solution through a filter to let the dissolved substance separate.
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.
Pass the solution through a filter to let the dissolved substance separate.
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
filtration to collect the sand and distillation to collect the salt
Which option is a natural material that is not a fossil fuel?(1 point)
Responses
natural gas
natural gas
petroleum
petroleum
vinyl
vinyl
cotton
cotton
What must happen for a natural resource to become a synthetic material?(1 point)
Responses
It needs to be dried out.
It needs to be dried out.
It needs to go through a chemical reaction.
It needs to go through a chemical reaction.
It needs to be pounded very thin.
It needs to be pounded very thin.
It needs to go through a phase change.