Across
- 2. Of mass conservation no atoms are gained or lost during any reaction.
- 3. A substance that undergoes a chemical change.
- 7. Combination or composition,in particular.
- 8. A measure of the acidity of a solution;equal to the negative logarithm of the hydronium ion concentration.
- 9. Reaction one half of an oxidation-reduction reaction,represented by an equation showing electrons as either reactants or products.
- 10. A substance that donates hydrogen ions.
- 11. A rapid exothermic oxidation-reduction reaction between a material and a molecular oxygen.
Down
- 1. A substance that accepts hydrogen ions.
- 4. Energy,Ea,is the minimum energy required to overcome the initial breaking of bonds in reactants.
- 5. Reaction rate is how quickly the concentration of reactants decreases and how quickly the concentration of products increases.
- 6. Catalyst is a substance that lowers the activation energy of a chemical reaction,which allows for the reaction to proceed at a faster rate.
- 8. A substance that is the result of the chemical change.
- 12. Energy the amount of energy required to pull two bonded atoms apart.