Across
- 1. The __ scale measures the acidity or basicity of a substance.
- 3. A chemical substance that has sour taste, turns blue litmus paper red and has a pH of less than 7.
- 4. A chemical substance that is slippery, taste astringent and have a pH of more than 7.
- 5. A chemical element in it's smallest possible form, made up of neutrons protons and electrons.
- 6. A substance formed when two or more chemical elements bond together.
- 7. Negatively charged ion.
Down
- 1. The element associated with K and the atomic number of 19.
- 2. The change of one or more substance into another substance is a chemical ______
- 3. The metals in group 2 on the periodic table are ______ earth metals.
- 6. Positively Charged ion.