Across
- 4. direct combination reaction is a type of chemical reaction in which two or more simple substances combine to form a more complex product.
- 8. release energy to their surroundings
- 14. type of chemical reaction that involves a transfer of electrons between two species.
- 15. something made as a result of a chemical reaction.
Down
- 1. the symbolic representation of a chemical reaction in the form of symbols and chemical formulas.
- 2. when a substance reacts with oxygen and releases a huge amount of energy in the form of light and heat.
- 3. a substance that takes part in and undergoes change during a reaction.
- 5. replaces one element for another in a compound.
- 6. a compound is broken into smaller chemical species.
- 7. a convenient way to express amounts of reactants and products of chemical reactions.
- 9. the energy of chemical substances that is released when the substances undergo a chemical reaction and transform into other substances.
- 10. absorbs energy from their surroundings
- 11. the numbers placed before the reactants in a chemical equation
- 12. type of chemical reaction that occurs when two reactants exchange cations or anions to yield two new products.
- 13. the ratio between the mass and the amount of substance (measured in moles) of any sample of said compound.