Chemistry Project
Across
- 2. What are all things made of?
- 7. The subatomic particle of an atom that is negatively charged.
- 9. What is the opposite of an insulator?
- 11. The subatomic particle of an atom that is positively charged.
- 12. What is the other name for the vertical families of the periodic table that determines and groups elements by chemical properties, reactivity, and the number of valence electrons?
Down
- 1. The number that comes in front of a chemical formula that you distribute.
- 3. Elements in Group 18 have the least __________ because they already have a full valence electron shell.
- 4. What is matter made of? (Singular)
- 5. When a molecule is made of 2 or more elements, what is it called?
- 6. The subatomic particle of an atom that is neutrally charged.
- 8. The small, lower "exponent" on an element that signals how many there are of it.
- 10. The 7 horizontal rows on the periodic table that group the elements by how many energy levels they have.