click below
click below
Normal Size Small Size show me how
chemistry
| Term | Definition |
|---|---|
| atom | the smallest part of an element which still has the properties of that element |
| parts of an atom | protons, electrons, neutrons |
| periodic table | Shows the elements in order of increasing atomic numbers |
| groups | vertical columns of elements |
| periods | horizontal rows of elements in the periodic table |
| ionic bond | the force of attraction between oppositely charged ions in a compound |
| ion | a charged atom or group of atoms |
| covalent bonding | this occurs when atoms share electrons |
| shell | an orbit for electrons |
| compound | 2 or more elements combined |
| molecule | 2 or more atoms combined |
| isotopes | atoms of same elements which have different number of neutrons |
| alkali metals | element which react with water |
| unstable atoms | atoms with just one out of x electrons its is outer shell |
| stable atoms | atoms with a full outer shell |
| atomic number | number of protons and electrons of that atom |