Across
- 1. The reactant that limits how much product is made
- 8. Consists of protons and neutrons
- 10. Where you can find all the elements
- 11. Anything that takes up space and has a mass
- 12. The element Pb
- 13. A substance made up of two or more different kinds of atoms
- 15. The study of matter
- 18. Has a positive charge
- 19. Made the first periodic table
- 20. A compound where electrons are shared
Down
- 2. Combination of two or more substances that are not chemically combined
- 3. A symbol of something that can dissolve in a solution
- 4. A massive explosion that created elements
- 5. Cannot see individual components of mixture
- 6. A reaction that breaks down a compound into two or more substances
- 7. Has a negative charge
- 9. Number in front of a compound or element
- 11. Made the periodic table we use today
- 14. Smallest unit of an element
- 16. An atom or molecule that has a charge because it has gained or lost electrons
- 17. Any substance that has definite composition