Phys. Changes vs. Chem. Changes

What is the definition of a physical change?

A change in which the entire substance is changed by result of a chemical reaction.

A change in which the state and or form of an object is changed, but not the object itself.

What is the definition of a chemical change?

A change in which the entire substance is changed by result of a chemical reaction.

A change in which the state and or form of an object is changed, but not the object itself.

What type of change is the process of iron rusting?

Chemical Change

Physical Change

What type of change is the process of water freezing?

Chemical Change

Physical Change

What type of change do you get when you light something on fire?

Chemical Change

Physical Change

What type of change do you get when you combine an acid and a base to form a neutral substance?

Chemical Change

Physical Change

Say you pour some sugar into your water on accident. What type of change is this?

Chemical Change

Physical Change

Oh no! You accidentally broke the point of your pencil. What type of change is this?

Chemical Change

Physical Change

You gaze at the Statue of Liberty. You read once that before it tarnished, it was a bright copper-brown color. What type of change is tarnishing?

Chemical Change

Physical Change

You leave a crayon outside in the sun for a couple hours. After you return to check on it, the wax is completely melted! What type of change occurred?

Chemical Change

Physical Change

Phys. Changes vs. Chem. Changes

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