click below
click below
Normal Size Small Size show me how
Periodic table
| Question | Answer |
|---|---|
| compound | Combination of two or more elements that are chemically combined |
| Anything on the Periodic Table is ________. | an element |
| groups | Go up and down (Remember - the word UP is in groups.); show the number of valence electrons; 18 total |
| families | Another name for groups |
| periods | Go side to side; show the number of electron shells (energy levels); 7 total |
| Elements that are most similar are in the same ________. | group |
| Mixture | Physically combined; can be separated |
| valence shell | Outermost shell of an atom |
| atomic mass | Number of protons plus the number of neutrons |
| conductivity | Ability for heat or electricity to flow through it |
| neutron | Part of an atom with a neutral charge |
| electron | Part of an atom with a negative charge |
| malleable | Able to be flattened out |
| ductile | Able to be stretched without breaking; not brittle |
| proton | Part of an atom with a positive charge |
| luster | Ability to reflect light |
| reactive | Causes a chemical reaction and releases energy |
| family | Also called group; columns on the periodic table (go up and down); Elements in a group have the same number of electrons in the outer level |
| period | Rows on the periodic table (side to side); Each row represents the number of energy levels |