Across
- 6. scale, A measure of acidity and alkalinity of a substance.
- 7. What is NOT an element of the skin's acid mantle?
- 8. Substances that cannot be reduced to simpler substances are called -------.
- 9. When 2 or more atoms are joined together chemically, what is created?
- 10. ion w/ a positive electrical charge
- 12. pH below 7.0, taste sour and turn litmus paper from blue to red.
- 13. Makes up 4/5 of the air.
Down
- 1. Causes atom or molecule to split in two, creating a pair of ions with opposite electrical charges.
- 2. The formation of a new product by the uniting of 2 or more elements is ------.
- 3. atom or molecule that carries an electrical charge
- 4. organic compounds are substances containing carbon that evaporates very quickly and easily.
- 5. Another name for alkalis is
- 11. ion w/ a negative electrical charge