| A | B |
|---|
| element | One of about 100 types of atoms is _______. |
| nucleus | The_____ is the center of an atom. |
| positive | Protons are _______ charged particles |
| negative | Electrons are _______ charged particles. |
| neutral | Neutrons are _________ charged particles. |
| atom | The smallest particle that is still a type of chemical or substance. |
| protons and neutrons | The nucleus is made of |
| protons and electrons | Neutral atoms have the same number of __________. |
| electrons | The outside particles of an atom that can move around and spin. |
| electron cloud | The region around a nucleus is the _________. |
| molecule | A group of atoms tied together to make a chemical. |
| protons | Elements are defined by the number of _____. |
| melts | If you add thermal energy (heat) to a solid it____. |
| liquid and gas | An element at the boiling point goes between which two states? |
| Physical Change | When a substance changes from between solid, liquid, gas, and plasma states. |
| Chemical change | When atoms split up and make a new substance. |
