| A | B |
|---|
| What is group 1? | Alkali metals |
| What is group 2? | Alkaline metals |
| What are groups 3 through 12? | Transition metals |
| What is group 17? | halogens |
| What is group 18? | noble gasses |
| What are the parts of an atom? | protons, neutrons, and electrons |
| What does it mean for an atom to be neutral? | It has the same number of protons and electrons |
| What are atoms with a positive charge called? | cat ions |
| What are atoms with a negative charge called? | an ions |
| What are isotopes? | elements with different numbers of neutrons |
| What makes an element stable? | It has 8 valence electrons |
| What does the atomic number represent? | The number of protons and electrons in an atom |
| What does the atomic mass represent? | protons plus neutrons |
| What are the two types of compounds? | Ionic bonds and covalent bonds |
| What is an ionic bond? | A chemical bond where an element takes an electron from another element |
| What is a covalent bond? | A bond where the elements share an electron |
| What is a valent electron? | an electron on the outer most shell of an atom |
| What is another name for the electron shell? | electron cloud |
| What are the two types of atomic models? | Bohr and Lewis |
