"Y9 Chemical Formulae Crossword": HTML5 Crossword

Across

7. A change that is usually quite hard to reverse (8)
8. Written or printed below the line (9)
9. A set of chemical symbols showing the elements present in a compound (8)
12. The things on the left of a chemical equation (9)
15. These are produced in a chemical reaction (8)
16. A strong force of attraction holding atoms together in a molecule or crystal (4)
17. This subscript symbol tells you whether a substance is a solid liquid or gas or in aqueous solution (5)

Down

1. You have to do this to chemical equations to make sure they have the same number of atoms in (7)
2. Sometimes put around a group of atoms so we can multiply them with a subscript (8)
3. Boiling is an example of this change (8)
4. An electrically neutral group of two or more atoms held together by chemical bonds (8)
5. A number that multiples a chemical formula (11)
6. A symbolic representation of a chemical reaction (8)
10. Separates reactants and products (Never use = ) (5)
11. When bonds are broken and formed (8)
13. The common name for Nitrogen Trihydride (7)
14. An abbreviation used in chemistry for chemical elements (6)