"Y9 Chemical Formulae Crossword": HTML5 Crossword

Across

4. A strong force of attraction holding atoms together in a molecule or crystal (4)
5. These are produced in a chemical reaction (8)
7. Sometimes put around a group of atoms so we can multiply them with a subscript (8)
8. You have to do this to chemical equations to make sure they have the same number of atoms in (7)
9. The things on the left of a chemical equation (9)
11. A number that multiples a chemical formula (11)
16. A change that is usually quite hard to reverse (8)
17. Separates reactants and products (Never use = ) (5)

Down

1. The common name for Nitrogen Trihydride (7)
2. An abbreviation used in chemistry for chemical elements (6)
3. An electrically neutral group of two or more atoms held together by chemical bonds (8)
6. Written or printed below the line (9)
10. This subscript symbol tells you whether a substance is a solid liquid or gas or in aqueous solution (5)
12. A set of chemical symbols showing the elements present in a compound (8)
13. Boiling is an example of this change (8)
14. When bonds are broken and formed (8)
15. A symbolic representation of a chemical reaction (8)