Across
- 5. Is the symbolic representation of a chemical reaction in the form of symbols and formulas.
- 6. the results of a chemical reaction.
- 8. Is a lasting attraction between atoms that enables the formation of chemical compounds.
- 9. A way of expressing information about the proportions of atoms that constitute a particular chemical compound, using a single line of chemical element symbols, numbers, and sometimes also other symbols.
- 10. A substance the takes part in a chemical reaction.
Down
- 1. An electron in an outer shell of an atom that can participate in forming chemical bonds with other atoms.
- 2. the law says mass can't be created or destroy only change into different form of mass.
- 3. A group of elements in the periodic table. They are all in the first column of the periodic table. They are extremely reactive.
- 4. A group of chemical elements with similar properties. Under standard conditions, they are all odorless, colorless, monatomic gases with very low chemical reactivity.
- 6. Occur when objects or substances undergo a change that changes the physical form of a composition but not the chemical composition.
- 7. Occur when a substance combines with another to form a new substance.