Across
- 2. - the number next to a chemical symbol used in chemical formulas
- 5. - a form of matter that has a constant composition and properties that are constant throughout the sample
- 9. - the separation of a compound into its elements used with electric current usually with a battery - a container consisting of one or more cells, in which chemical energy is converted into electricity and used as a source of power.
- 11. - a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction
- 12. - a pure substance of two or more elements chemically combined
- 13. - a set of chemical symbols showing the elements present in a compound and their relative proportions, and in some cases the structure of the compound.
- 15. - element with the chemical symbol "O"
- 17. - chemical compound, living organisms breath this out, CO2
- 18. - chemical compound used to accelerate
Down
- 1. - The location of the atoms, groups or ions relative to one another in a molecule, as well as the number and location of chemical bonds
- 3. - occupies space and has weight
- 4. - element with the chemical symbol "H"
- 6. - a pure substance that cannot be broken down chemically or physically.
- 7. - negative charged electrode that supplies current
- 8. - a notation of one or two letters representing a chemical element
- 10. - positive charged electrode that supplies current
- 14. - compound that can put out fire, also known as H2O
- 16. - the basic unit of a chemical element