What is the primary difference between a physical change and a chemical change?

A chemical change results in new substances, while a physical change does not

A physical change alters the substance's identity, while a chemical change does not

Physical changes are always reversible, but chemical changes are not

Chemical changes involve a change in state, while physical changes do not

What happens to atoms during a chemical reaction?

Atoms are rearranged, and new chemical bonds are formed or broken

Atoms are created or destroyed to form new substances

Atoms change their elemental identity to form new substances

Atoms remain in their original arrangement but change their state

A chemical reaction can be used to turn water into two gases: hydrogen and oxygen. Which of the following statements about this reaction are true?

A compound is converted into two elements

An element is converted into two compounds

Which of the following is the best analogy for the movement of atoms during a chemical reaction?

Salsa dancers whirl around with linked arms, swapping partners halfway through the dance

Music fans at a rock concert move around randomly

Musicians in an orchestra leave the stage during an interval and then return to the same seats

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9th Grade

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Mandy Mills

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Firework exploding

Physical Change

Chemical Change

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Iron rusting

Physical Change

Chemical Change

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Ice cream melting

Physical Change

Chemical Change

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