Picking up a paper clip with a magnet. physical change, chemical change, or neither

Hello there! :D

A physical change is a change in which something is changed in appearance. For example, if I cut a piece of paper in half. 

A chemical change is when the composition (or the makeup) of something is changed. For example, baking soda and vinegar. They react to form a whole different thing. 

Picking up a paper clip with a magnet doesn't change its appearance. It doesn't change its composition. The magnet only picks up the paper clip because it attracts magnetic objects, if you were to take it off of the paper clip it would still be the same paper clip, and most likely look the same. 

I hope this helps!
~kaikers

You use the atomic number to find out how many protons and neutrons there are in the atom. you use the atomic mass to find out how many protons and electrons there are in the atom. 

False, as a substance changes from a solid to a liquid and from a liquid to a gas the molecules get farther apart from each other