Across
- 5. Are placed in front of the symbol;is balanced by changing or adding______
- 6. Substance that undergoes a change in a chemical reaction.
- 7. A substance that speeds up the rate of a reaction but that is not used up in the reaction.
- 8. Mass can neither be created nor destroyed
Down
- 1. A starting substance in a chemical reaction
- 2. Separates the formulas of the (reactants on the left) from the formulas of the products (on the right) ex: Fe+ O2 Fe2 O3
- 3. Each side of the equation has the same number of atoms of each element.
- 4. Chemical equation that does not indicate the relative amounts of the reactants and products involved in the reaction