 |
Java Games: Flashcards, matching, concentration, and word search. |
 |
|
| A | B |
|---|
| atomic number | # of protons (defines element) |
| mass number | # protons + # neutrons |
| neutral atom | protons = electrons |
| anion | electrons > protons |
| cation | electrons < protons |
| atomic mass | average mass (has decimal) |
| isotopes | same # protons, different # neutrons |
| protons | +, in nucleus, 1 amu |
| neutrons | neutral, in nucleus, 1 amu |
| electrons | negative, around nucleus, teeny tiny |
| valence shell | last energy level |
| columns | tells # Valence electrons |
| rows | tells # energy levels |
| alkali metals | column 1 |
| alkaline earth metals | column 2 |
| transition metals | skip columns |
| boron family | column 3 |
| carbon family | column 4 |
| nitrogen family | column 5 |
| oxygen family | column 6 |
| halogens | column 7 |
| noble gases | column 8 |
| metals | on the left |
| non-metals | on the right |
| metaloids | on the stair steps |
| metal properties | luster, conductivity, maleable, ductile |
| nonmetal properties | dull, poor conductors, brittle |
|
| |
