Chemistry Terms Crossword

4. A characteristic that can be observed or measured without changing the sample’s composition.
5. When an acid and a base react to form a water and a salt.
6. Which chemical reaction is; Al2O3→Al+O2 .
9. The volume of a gas is inversely proportional to the pressure if the temperature is held constant.
10. The ability of a substance to combine with or change into one or more other substances.
11. A description of an element’s tendency to undergo chemical reactions.
13. Biological catalysts that speed up the rate of reactions in the body.
14. A measure of how strongly atoms attract bonding e- to themselves. The higher the number, the greater the attraction for e-.
15. A mixture that is not uniform
17. The total pressure in a gas mixture is equal to the sum of the partial pressure of the individual gases.
18. When one element is traded with another element in a compound.

1. When two nonpolar atoms come in close contact, the electrons of one atom repel the electrons of another, creating a temporary dipole.
2. Occurs when solutions of two aqueous compounds are combined; the positive and negative ions of each compound exchange places
3. How close a measurement's results come to the true value.
7. An unstable form of a chemical element that releases radiation as it breaks down and becomes more stable.
8. A device used to measure the energy absorbed or released as heat in a chemical reaction.
12. A compound/element that combines with O2 to form an oxide + sometimes H2O.
16. A substance that speeds up a chemical reaction without itself undergoing any chemical change. They do this by lowering the activation energy of the reaction.
17. The reproducibility of a result or measurement.
19. The pressure of a given mass of gas is directly proportional with the Kelvin temperature when volume is held constant.