CHEMISTRY

3. Substance formed by the combination of elements in fixed proportions
7. Molecule that has gained or lost one or most electrons
9. Substance that cannot be decomposed into simpler substances
10. Has mass and occupies space
11. Chemical element in its smallest form; Made up of neutrons and protons
12. Table that shows the names and symbols of the chemical elements
14. Chemical with a bitter taste whose pH is greater than 7
15. Phase with no definite shape or volume
16. Type of heterogeneous mixture that is made up of suspended solid particles
19. Phase transition from solid into gas
20. Element with the symbol He

1. Mixture made up of one phase
2. Amount of mass per unit of volume
4. Logarithmic scale for expressing the acidity of alkalinity of a solution
5. Mixture made up of more than one phase
6. Unit of measure for temperature based upon an absolute scale
8. Devise used to measure the pressure in the atmosphere
13. Chemical with a sour taste whose pH is less than 7
17. Homogeneous mixture of a liquid (the solvent) with a gas or solid (the solute)
18. Material that allows electric flow more freely