Across
- 4. A substance that takes part in and undergoes change during a reaction.
- 5. A product is a substance that is formed as the result of a chemical reaction.
- 7. keeping or showing a balance; arranged in good proportions.
- 9. a principle stating that mass cannot be created or destroyed.
- 10. not keeping or showing an even balance; not evenly distributed.
Down
- 1. A symbolic representation of what happens when chemicals come in contact with one another.
- 2. physical substance in general, as distinct from mind and spirit; (in physics) that which occupies space and possesses rest mass, especially as distinct from energy.
- 3. a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
- 6. the basic unit of a chemical element.
- 8. a number placed in front of a chemical symbol or formula that shows how many atoms or molecules of the substance are involved in the reaction.