Across
- 6. the smallest unit of ordinary matter that forms a chemical element.
- 7. What compound has a chemical formula of CO2
- 10. Composed of two or more parts, elements, or ingredients
- 15. the identity and relative number of the chemical elements that make up any particular compound.
- 16. What element has a symbol of O
- 17. formula for a compound existing as discrete molecules that gives the total number of atoms of each element in a molecule
- 18. defined as the measurement system used in many countries including the United States using feet, pounds and seconds.
- 19. a group of two or more atoms that form the smallest identifiable unit
Down
- 1. What compound has a chemical formula of H2O
- 2. What element has a symbol of H
- 3. What element has a symbol of N
- 4. the formula that shows the ratio of elements present in the compound, but not the actual numbers of atoms found.
- 5. most noted for his contribution to molecular theory now known as _______'s law
- 7. a subdiscipline of science that deals with the study of matter and the substances that constitute it.
- 8. A substance that cannot be broken down into simpler substances by chemical means.
- 9. What element has a symbol of C
- 11. the average mass of atoms of an element, calculated using the relative abundance of isotopes in a naturally-occurring element
- 12. a system of measurement that uses the meter, liter, and gram as base units of length , capacity, and weight respectively.
- 13. standard unit (6.02214076 x 10^23) in chemistry for measuring large quantities of very small entities such as atoms.
- 14. the quantity of three-dimensional space occupied by a liquid, solid, or gas.