2.13 Unit Test: Matter and Mixtures Alternative Assignment

How is all matter alike?

• All matter is soluble in water

• All matter can insulate from heat.

• All matter changes from solid, to liquid, to gas.

• All matter has volume and mass. 

What types of matter have the property of density?

• All solids, liquids, and gases have density.

• Only heavy matter has density. 

• Only solid matter has density.

• Everything except gasses have density.

How are mixtures and solutions different?

• Unlike a solution, a mixture has density and will always sink in a liquid because mixtures lack buoyancy. 

• Unlike a solution, a mixture can dissolve completely in a liquid because the properties of the ingredients change.

• Unlike a solution, a mixture can easily be separated and each ingredient keeps its physical properties.

• Unlike a solution, a mixture is unable to change states of matter from a solid to a liquid or gas.

Why might a scientist use a magnet and small strainer when investigating the physical properties of a substance?

• to try and create a complex solution for an experiment

• to try and separate a difficult solution

• to try and take apart an easily separated mixture

• to try and take apart an easily separated liquid solution

Tags

NGSS.MS-PS2-5

Which property traps heat, and what is an example of one?

• conductor, metal

• insulator, plastics

• conductor, wood

• insulator, water

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What is happening to the molecules in a substance if thermal energy is transferring away through conduction? 

• Molecules are slowing down.

• Molecules are disappearing.

• Molecules are moving fast.

• Molecules have stopped.

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A scientist observes that water from a pond that flows through a specific filter has most of the particles removed from it.

What is the process being used and what interpretation can the scientist make? 

• The process of water force is keeping the water completely pure, so the filter is working.

• The process of filtration is working to remove all of the dissolved impurities from the water.

• The process of filtration is working to remove residue from the pond water.

• The process of evaporation has removed most of the particles, so the filter is unneeded.

What does it mean if a substance has the physical property of solubility?

• The substance is an easily separated mixture poured into a solvent.

• The substance can mix or dissolve evenly throughout another substance.

• The substance is an easily separated solution.

• The substance can keep all its properties when dissolved.

Can a solution of saltwater ever be separated?

• Yes, easily with a strainer.

• No, it is a solution and impossible.

• No, the salt has disappeared.

• Yes, using evaporation. 

Tags

NGSS.MS-PS3-4

When a screen is used in a science lab to separate the substances in a mixture, what physical properties are being used?

• density, buoyancy

• texture, shape

• temperature, size

• size, shape