Across
- 2. The _____ reactant is completely used up in a chemical reaction
- 4. The vertical column on the periodic table
- 7. Substance made of only one type of atom
- 9. The simplest whole-number ratio formula of a compound
- 10. Unit cancelling method of calculation
Down
- 1. Defined by mass per unit volume
- 3. If an atom has 15 protons and 12 electrons, what is its charge? (spell the number)
- 5. The horizontal row on the periodic table
- 6. Balance this equation - what coefficient goes in front of O₂? 2H₂ + _O₂ → 2H₂O (spell the number)
- 8. One of the acronyms to help you remember electron transfer in redox reactions