Across
- 3. The product of hydrochloric acid and copper carbonate
- 7. The colour of a base
- 8. Covalently bonded elements (same element - a molecule)
- 9. To burn
- 10. A form of combustion that burns with a clean flame and the products are CO2 and H2O
- 11. A reaction in which one element or radical takes the place of another element or radical in a compound (A + BC --> AC + B)
- 13. Bitter and low pH
- 15. A number placed in front of an element, symbol or chemical formula in an equation
- 17. A reaction in which two or more substances combine to form one new compound (also called a synthesis reaction)
- 21. The colour of an acid
- 22. A compound that contains carbon and is able to form a bond with hydrogen
- 24. A reaction where a more complex molecule breaks down to form two or more simpler products
Down
- 1. The law that mass is neither created or destroyed which is the reason chemical reactions are balanced
- 2. Tells you how many atoms of each element are in a molecule
- 4. Involves two non-metal atoms and share electrons to make outermost shells of both full (neither can take the electrons)
- 5. A chemical reaciton in real life. It is the reaction that happens in the plant so it can breathe and allows us to breathe
- 6. A representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products
- 9. A form of combustion that burns with a smokey flame and has insufficient oxygen
- 12. Different elements e.g. H2O
- 14. Is sour and can burn
- 16. A number in a chemical formula that tells the number of atoms in a molecule or the ratio of elements in a compound
- 18. doesn't contain carbon and can't form a bond with hydrogen
- 19. A reaction where the products are water and salt
- 20. An insoluble solid that is formed from the reaction between solutions
- 23. The things that make up everything