Across
- 2. pure substance, made of two or more elements
- 5. Atoms that lost(+) or gained(-) electrons
- 7. Difference between experiment measurements and known
- 8. joining in chemical equation
- 9. Positive ions
- 11. Most simple unit of matter, one type of atom
- 15. Tentative explanation about a phenomena
- 17. smallest unit that keeps properties, neutral charge
- 18. SO₃²⁻
- 19. Substance elements/compounds
- 20. divide/split in chemical equation
- 21. Solution mixture made mostly of water
- 22. composition is different
- 23. -m(235-mU)
- 24. equal number of protons and electrons
Down
- 1. composition is the same
- 3. Number before symbol on Periodic Table
- 4. Can be counted
- 6. Elements with different numbers of neutrons
- 10. Negative ions
- 12. Detailed explanation of a phenomena
- 13. Combination of two or more substances
- 14. Vertical column on Periodic Table (chem/behavior)
- 16. Letters on Periodic Table
- 17. (NH4)2SO3
- 19. Horizontal column on Periodic Table (size/shape)