| A | B |
|---|
| Atoms | Small unit of matter that can react |
| Elements | Substance that can not be broken down by chemical reactions |
| Compound | Something composed of two or more elements |
| Molecule | group of atoms bonded together, smallest unit of a compound |
| Covalent Bond | atoms bonded by sharing electrons |
| Ion | a positively or negatively charged atom or molecule |
| Ionic Bond | bonding between two charged ions |
| Cohesion | particles prefer to stick to each other |
| Adhesion | particles prefer to stick to other particles |
| Solution | a mixture of evenly distributed components |
| Acid | a chemical substance that give off hydrogen atoms |
| Base | a chemical substance that receives hydrogen atoms |
| Carbohydrates | provide energy and structure for organisms, sugar, startch |
| Lipids | non polar molecules that store energy in the body, also create steroids and cell membranes |
| Protein | Made up of amino acids, provide many structures and functions in organisms` |
| Chemical Reaction | a process of changing reactants into different products by breaking and recreating bonds |
| Enzymes | proteins that reduce the activation energy needed to begin a reaction |
| Activation Energy | the energy needed to start a reaction |
| Ectothermic Reaction | Gives off more energy then it requires, normally feel warm |
| Endothermic Reaction | Requires more energy then it gives off, normally cold |
