Across
- 2. Elements in the same ______ have similar chemical properties and the same number of valence electrons
- 6. Evidence of this type of reaction is bubbling, burning, and residue
- 7. The small number to the left of an element in a chemical formula
- 8. This element is a metalloid in group 13
- 10. The elements on the right side of a chemical equation
Down
- 1. Mass can only be ________ or moved around
- 3. Valence electrons determine how ______ an element is.
- 4. Elements in the same _____ have the same number of energy levels; these move left to right in the periodic table
- 5. Evidence of this type of reaction is boiling, melting, and freezing
- 9. Mass cannot be ________ nor destroyed.