Across
- 2. a change where heat is absorbed
- 6. the small number to the right of an element symbol, that represents the number of atoms of an element in one molecule of a substance
- 7. the formation of a new substance with different properties; cannot be undone by physical means
- 8. the formation of solids in a solution, as a result of a chemical reaction
- 9. a change where heat is released
- 12. a change caused by the interaction of two or more substances (reactants) resulting in the formation of new substances (products)
- 15. new substance formed as a result of a chemical reaction
Down
- 1. 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
- 3. a substance made of more than two atoms
- 4. a pure substance made of one kind of atom
- 5. the large number to the left of a chemical formula, that represents the number of molecules of that substance in reaction
- 10. starting substance in a chemical reaction
- 11. a symbol that represents an element, where the first letter is capitalized and the second (if present) is lowercase
- 13. a representation of a chemical reaction by symbols and numbers
- 14. a pure substance that is made of more than one type of atom