MS-PS1-2

A physical change happens when …

• the substance does not change into a new substance with new chemical properties

• the substance changes into something different with new chemical properties

Which is not a physical property

• flammability

• melting point

• boiling point

• density

Which of the following is an example of a chemical change?

• Rusting of iron

• Breaking of glass

• Melting of ice

• Boiling of water

How are chemical reactions different from a physical change?

• physical changes create a new substance, chemical reactions do not

• chemical reactions create a new substance, physical changes do not

• chemical reactions happen more, physical changes happen less

• physical changes happen more, chemical reactions happen less

What is the term for the temperature at which a solid becomes a gas without passing through the liquid state?

• Condensation point

• Sublimation point

• Melting point

• Boiling point

Which reason BEST explains why atoms bond together to form molecules and compounds?

• they have sticky electrons

• the bigger the molecule, the more energy it has

• atoms want to be stable

• they do not want to bond

What is a melting point?

• the temperature at which a substance changes from a liquid to a gas

• the temperature at which a substance changes from a solid to a liquid

• the temperature at which a substance changes from a liquid to a solid

• the temperature at which a substance changes from gas to plasma

What is a boiling point?

• the temperature at which a substance changes from a liquid to gas

• the temperature at which a substance changes from a solid to a liquid

• the temperature at which a substance changes from a liquid to a solid

• the temperature at which a substance changes from a gas to plasma

Which of the following correctly summarizes the process of ice turning into water and then into steam?

• a solid to liquid to gas

• a solid to gas to liquid

• a liquid to solid to gas

• a liquid to gas to solid

• a gas to liquid to solid

Which of the following is NOT an example of a physical change

• Cutting paper

• Burning wood

• Melting glass

• Boiling water