Across
- 3. atoms of the same element with different numbers of protons
- 6. negatively charged ion
- 8. substance with a pH value greater than 7
- 11. substance that participates in and undergoes change during a chemical reaction
- 15. atom that has gained or lost electrons
- 16. ________ radiation is a form of energy emitted or absorbed by matter
- 17. type of chemical bond that involves the sharing of electrons
- 18. substance that is formed during a chemical reaction
- 20. part of the atom that contains the protons and neutrons
Down
- 1. type of chemical bond that involves the transfer of electrons
- 2. subatomic particle with no charge
- 4. ________ electrons are found in the outermost energy level of an atom
- 5. particle of electromagnetic radiation having zero mass and carrying a quantum of energy
- 7. positively charged ion
- 9. subatomic particle with a negative charge
- 10. subatomic particle with a positive charge
- 12. substance with a pH value less than 7
- 13. atomic ________ tells us how many protons an element has
- 14. region around an atom's nucleus that is the probable location of an electron
- 19. type of energy that is related to motion