Across
- 5. a representation of a molecule or compound in which the elements are represented by their symbols and subscripts represent the number of atoms of each element
- 6. substance(s) resulting from a chemical reaction
- 8. the formation of a new substance with different properties; cannot be undone by physical means
- 11. the number placed in front of a chemical formula in a chemical equation; represents the number of molecules of that substance
Down
- 1. a change caused by the interaction of two or more substances (reactants) resulting in the formation of new substances (products)
- 2. combined atoms of the same element (e.g., O2)
- 3. a representation of a chemical reaction by symbols and numbers
- 4. the number written to the right and slightly below an element in a chemical formula; represents the number of atoms of an element present in a chemical formula
- 6. the formation of solids from a solution
- 7. substances that are combined and changed during a chemical reaction
- 9. a substance made of two or more elements
- 10. matter is not created or destroyed; only rearranged