Across
- 1. Type of bond formed by sharing electrons
- 4. physical blend of two or more substances
- 8. table Chart organizing elements by atomic number and properties
- 10. Center of an atom containing protons and neutrons
- 12. Atoms of the same element with different neutrons
- 13. Negatively charged particle
- 14. Element with properties of metals and nonmetals
- 15. Small number showing how many atoms in a compound
- 17. Substance formed in a chemical reaction
- 18. Electrons in the outermost shell
- 20. Basic unit of a chemical element
Down
- 2. Definite volume and takes shape of container
- 3. type of charge forming new substances
- 5. Amount of matter in object
- 6. mass per unit
- 7. substance present before a chemical reaction
- 9. Substance that speeds up a reaction without being consumed
- 11. has definite shape and volume
- 16. Atom or molecule with a charge
- 17. scale used to measure acidity
- 19. Mixture of metals