Chemical Reactions

3. A small number written to the right of an element in a chemical formula indicating the number of atoms.
6. A substance that speeds up a chemical reaction without being consumed.
11. A solution where water is the solvent.
15. A substance present at the start of a chemical reaction.
16. A number in a chemical equation that shows the quantity of a substance.
17. A process that involves the rearrangement of atoms to form new substances.
20. A chemical equation with equal numbers of each type of atom on both sides.
21. A substance that undergoes change during a chemical reaction.
23. Numbers placed before chemical formulas in an equation to balance it.
25. The reaction where products reform into reactants.
26. A chemical reaction that typically involves oxygen and produces heat and light.
27. A solid that forms and settles out of a liquid mixture during a chemical reaction.
28. States that matter is neither created nor destroyed during a chemical reaction.
29. A small number in a chemical formula indicating the number of atoms of an element.
30. A substance that is formed as the result of a chemical reaction.

1. The substances produced during a chemical reaction.
2. A symbolic representation of a chemical reaction.
4. A state in which the forward and reverse reactions occur at the same rate.
5. Indicators such as color change, temperature change, gas formation, or precipitate formation.
7. A combination of symbols that shows the ratio of elements in a compound.
8. The reaction where reactants form products.
9. A reaction where one element replaces another in a compound.
10. A chemical reaction in which the products can react to reform the reactants.
12. A reaction where two or more substances combine to form one compound.
13. A change in state or appearance that does not create a new substance.
14. A reaction that releases heat to its surroundings.
18. A reaction that absorbs heat from its surroundings.
19. A numerical value that expresses the ratio of product concentrations to reactant concentrations at equilibrium.
22. A change that produces one or more new substances.
24. A chemical reaction where one compound breaks down into simpler substances.