Across
- 3. when one substance combines with another substance creating a new substance.
- 7. first column extreamly reactive
- 8. A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulas.
- 9. odorless, colorless, low chemical reactivity
- 10. the result of a chemical reaction.
- 11. attraction between atoms
Down
- 1. any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as system mass cannot change quantity if it is not added or removed.
- 2. when objects or substances undergo a change that changes the physical form of a composition but not the chemical composition.
- 4. electron in the outer shell of the atom
- 5. symbols, such as parentheses, dashes, brackets, commas and plus and minus signs.
- 6. a substance that takes part in and undergoes change during a reaction.