What is solubility?

• the hardness of a material

• the ability of a material to conduct thermal energy

• the ability of a material to dissolve into another material

Which object is made of a material that is a good insulator of electrical and thermal conductivity?

• Penny

• Cast iron pan

• Wooden spoon

• Aluminum foil

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NGSS.MS-PS3-3

The particles shown best represent which state of matter?

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Jenny made Elephant Toothpaste. What is true about this reaction?

• Matter completely disappears during the chemical reaction.

• The total mass of the matter stays the same.

• The total mass of matter increased.

• The total mass of matter decreased.

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NGSS.MS-PS1-5

Boiling water is an example of what?

• a physical change

• decreasing temperature

• water particles moving slowly

• a change of state from liquid to solid

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Billy wants to find out the hardness of a rock he found in his yard. How can he test the hardness?

• He can make a mixture

• He can do a scratch test.

• He can find the mass.

• He can evaporate a solution.

What is true of all mixtures?

• All mixtures take the shape of their container.

• All mixtures are difficult to separate after combined.

• All mixtures do not change into a different material when mixed.

• All mixtures are soluble.

The energy of moving particles is called…

• thermal energy

• Electrical conductivity

• Magnetic energy

• thermal conductivity

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Which property of matter describes the ability to dissolve in water?

• Conductivity

• Magnetism

• Reflectivity

• Solubility

Observable characteristics are also called…

• Properties

• Matter

• Mass

• Change of state

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NGSS.MS-PS1-2