Chemistry Bonus

2. something made as a result of a chemical reaction.
5. a description of a chemical reaction, including what reacts, what is produced, and which direction(s) the reaction proceeds.
6. occurs in reversible reactions when the forward rate of the reaction is the same as the reverse rate of the reaction.
7. is when a solid changes directly into a gas.
8. a chemical bond formed when two atoms share two electrons.
10. measure of the average kinetic energy of particles.
15. is an element belonging to Group II of the periodic table.
16. a row (left to right) of the periodic table.
17. a procedure in which the concentration of an acid or base is determined by measuring how much base or acid is required to neutralize it.
18. amount of matter in a substance. It is commonly reported in units of grams.
19. include any chemical that gives off protons or H+ in water.Have a pH of less than 7
20. a measure of how close a measured value is to its true value.

1. the temperature and pressure at which the solid, liquid, and vapor phases of a substance exist in equilibrium.
3. An ionic compound formed from reacting an acid and a base.
4. Avogadro's number (6.02 x 1023) of anything.
6. a process that absorbs heat. Endothermic reactions feel cold.
9. a substance that lowers the activation energy of a reaction or speeds it up without being consumed by the reaction.
11. a measure of the amount of energy in a system.
12. he substance that gets dissolved in a solvent. Usually, it refers to a solid that is dissolved in a liquid.
13. A strong acid is an acid that completely dissociates in water.
14. a process that gives off heat.