Across
- 2. formed in a chemical reaction.
- 3. bond in which two atoms are linked through sharing electrons.
- 9. number protons in the nucleus of an atom.
- 11. difference in electrical charge at one end of a molecule, as compared to the other.
- 12. substance that goes into a chemical reaction.
Down
- 1. a chemical reaction, matter can neither be created nor destroyed.
- 4. of an atom, possessing no electrical charge.
- 5. of covalent bond formed when two pairs of electrons are shared between two atoms.
- 6. bond that links an already covalently bonded hydrogen atom with a second; relatively electronegative atom.
- 7. linkage in which two or more ions are bonded to each other by virtue of their opposite charge.
- 8. atom that has positive or negative charge because it has fewer or more electrons than protons.
- 10. of element defined by the number of neutrons contained in its nucleus.