| A | B |
|---|
| crystal | A solid with regular repeating arrangments of atoms |
| gemstones | Special rock crystals used in jewelry |
| polymer | Molecules arranged in long chains of repeating molecules. |
| base | A molecule that tastes bitter, conducts electricity and accepts a hydrogen ion |
| acid | molecule that tastes sour, corrodes metals, conducts electricty and donates a hydrogen |
| pH | Potential for hydrogen |
| chemical reaction | when atoms form new bonds with other atoms forming a new substance |
| physical reaction | A physical change that does not effect the molecules |
| chemical reaction | When two or more chemicals interact changing into a different substance |
| reactants | the chemicals that are to be reacted |
| products | The chemicals that result because of a reaction |
| endothermic reaction | Reaction that draws heat from the surrounding atmosphere, making it colder |
| exothermic reaction | Reaction that gives off heat from the chemical reaction making heat |
