Across
- 4. a weak chemical bond that forms when hydrogen atoms that are covalently bonded to one atom are attracted to another atom on another molecule
- 5. the number of protons in the nucleus of a particular element
- 6. atoms of the same element with different numbers of neutrons
- 7. the smallest particle that can contain the chemical properties of an element
- 9. the bond formed when elements share electrons
- 14. a compound that contains carbon-carbon and carbon-hydrogen bonds
- 15. a measurement of the total number of protons and neutrons in an element
- 16. a substance composed of atoms that cannot be broken down into smaller, simpler components
- 17. a molecule containing more than one element
- 18. a measure of the acidity or alkalinity of a solution
- 19. a substance that contributes hydroxide ions to a solution
Down
- 1. a chemical bond between two ions of opposite charges
- 2. the spontaneous release of material from the nucleus of radioactive isotopes
- 3. a chart of all chemical elements currently known, organized by their properties
- 8. a compound that does not contain the element carbon or contains carbon bound to elements other than hydrogen
- 10. a molecule in which one side is more positive and the other side is more negative
- 11. the time it takes for one-half of an original radioactive parent atom to decay
- 12. a particle that contains more than one atom
- 13. a measurement of the amount of matter an object contains
- 20. a substance that contributes hydrogen ions to a solution