| A | B |
|---|
| ION | Atom with an electromagnetic charge |
| NUCLEUS | Core of an atom that contains neutrons and protons |
| H2O | Example of a compound formed by a covalent bond |
| NaCl | Example of a compound formed by an ionic bond |
| DEMOCRITUS | Greek philosopher whom named the smallest piece of matter as the "atom" |
| CHEMICAL PROPERTY | How chemicals react with one another |
| LAW OF REPULSION | Like charges repel |
| COMPOUND | Matter formed by having atoms chemically bond with different atoms |
| ELEMENT | Matter formed by having atoms with the same atomic number |
| PHYSICAL PROPERTIES | Melting / boiling points |
| ELECTRON | Negatively charged sub-atomic particle located outside the nucleus |
| NEUTRON | Non-charged particle located in the nucleus |
| ATOMIC NUMBER | Number in the periodic table that expresses the number of protons |
| ATOMIC MASS | Number in the periodic table that includes the number of protons and neutrons |
| ORBIT | Path electrons follow outside the nucleus |
| GAS | Phase of matter where molecules vibrate fastest and move away from each other |
| LIQUID | Phase of matter where molecules vibrate more quickly and remain close together |
| SOLID | Phase of matter where molecules vibrate slowly and remain close together |
| PROTON | Positively charged sub-atomic particle located in the nucleus |
| MOLECULE | Smallest piece of a compound |
| ATOM | Smallest piece of an element |
| NUCLEAR FORCE | Strong force that keeps protons inside the nucleus |
| COVALENT | Type of chemical bond that is formed by the sharing of electrons between atoms |
| IONIC | Type of chemical bond that is formed by the transfer of electrons between atoms |
| LAW OF ATTRACTION | Unlike charges attract |
