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Science 7 6-1/2
Science 7 6-1
| Question | Answer |
|---|---|
| physical change | observed without changing the substance into another substance |
| chemical change | ability to change into another substance |
| reactant | substances at beginning (left side of equation) |
| product | new substances (right side of equation) |
| precipitate | solid that forms from solution during chemical reaction |
| endothermic reaction | energy absorbed |
| exothermic reaction | energy released |
| coefficient | number in front of chemical equation, tells you how many atoms/molecules there are |
| synthesis | put together, make more complex substance |
| decomposition | break down into simpler products |
| replacement | two elements in different compounds trade places |