| A | B |
|---|
| atom | smallest basic unit if matter |
| proton | positively charged nuclear particle |
| electron | negatively charged particle |
| neutron | neutral nuclear particle |
| element | one particular type of atom |
| compound | substance made of more than 1 element |
| ion | an atom that has lost or gained electrons |
| ionic bond | force between oppositely charged ions |
| covalent bond | when two atoms share electrons |
| molecule | 2 or more atoms held together by covalent bonds |
| hydrogen bond | attraction between H & a slightly negative atom |
| cohesion | water molecules sticking together |
| adhesion | water molecules sticking to other substances |
| monomer | a single subunit or molecule |
| polymer | monomers joined together |
| carbohydrates | composed of C, H & O (bread, sugars, etc) |
| lipids | fats, oils, butter, composed of head and a tail |
| proteins | made of amino acids, important in everything you do |
| nucleic acids | DNA & RNA, made of nucleotides |
| amino acids | make up proteins, 20 different types |
