Physical vs Chemical Properties and Changes

Which is the property of matter in which a substance can transfer heat or electricity?

• magnetism

• conductivity

• density

• solubility

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NGSS.MS-PS3-3

Serena is mixing a material into a beaker filled with a liquid. She notices that the material seems to disappear into the liquid. What physical property of the material is Serena most likely observing?

• solubility

• conductivity

• magnetism

• density

Eugene describes the physical property of a material as “sweet and floral.” What physical property of the material is Eugene most likely observing?

• boiling point

• shape

• hardness

• odor

Which statement best compares and contrasts two physical properties of matter?

• Density and solubility are similar because they both involve water, but they are different because density involves dissolving a material and solubility involves floating or sinking a material.

• Density and solubility are similar because they both involve a material’s mass and volume, but they are different because density involves floating materials and solubility involves sinking materials.

• Boiling points and melting points are similar because they both involve changing the heat of a material, but they are different because boiling point involves adding heat to a material and melting point involves removing heat from a material.

• Boiling points and melting points are similar because they both involve the change in a state of a material, but they are different because boiling point involves a change from a liquid to a gas and melting point involves a change from a solid to a liquid.

What happens when a substance undergoes a physical change?

• Some physical properties change, but the substance keeps its identity.

• No physical properties change, and the substance keeps its identity.

• Some physical properties change, and the substance changes its identity.

• No physical properties change, but the substance changes its identity.

Which can occur in a physical change?

• The mass can increase.

• The particles can arrange in different ways.

• The mass can decrease.

• The atoms can bond to different atoms.

When liquid gold becomes a solid, its particles get closer together. Which best describes what happened to the gold?

• the conservation of magnetism

• the change in solubility in a physical change

• the change in melting point in a physical change

• the rearrangement of particles in a physical change

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NGSS.MS-PS1-4

What is an example of a physical change?

• having less ash than the paper that was burned to form it

• ice forming and then melting back into water

• rust having a different identity than the iron it forms on

• the irreversible reaction of vinegar and baking soda

Which statement about the physical change of liquid water boiling into steam is true?

• The heat added represents an energy change.

• The action cannot be reversed.

• The steam cannot conserve mass.

• The weight lost represents a mass change.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The Statue of Liberty is made of copper that has turned green because it has undergone a change. What can be said about this change?

• The change is a physical change because the copper in the statue is still there.

• The change is a physical change because a new chemical is formed on the outside of the statue.

• The change is not a physical change because the color of the statue has changed.

• The change is not a physical change because a new chemical is formed on the outside of the statue.

Tags

NGSS.MS-PS1-2