Revision on Metals (Year 8)

1. Hydrated iron oxide has the common name of _____.
4. Tin and copper make _________.
6. This is a variable that you keep the same during an investigation.
8. Potassium reacts more vigorously than sodium; potassium is _______ in the reactivity series than sodium.
9. Metal burns in oxygen is called a __________ reaction.
12. This is a substance that is formed in a chemical reaction.
14. Metal reacts with hydrochloric acid to give metal ______ and hydrogen.
15. Magnesium reacts with copper sulfate to give magnesium sulfate and copper is a _________ reaction.
17. Iron needs ________ and water to rust.
18. Rocks containing metal are called metal _____.
19. A solution of a non-metal oxide is _______, with a pH < 7.
20. This is a variable that you change in an investigation.
22. An _______ is made from two or more elements.
24. This is a variable that you measure.
25. Metals are ________, meaning that they can be shaped without breaking or cracking.

2. Metal reacts with an acid to give a metal _____ and hydrogen.
3. A ______ splint will give a pop sound in the presence of hydrogen gas.
5. This is a substance that takes part in and undergoes change during a chemical reaction.
6. The law of ___________ of mass states that matter cannot be created or destroyed in a chemical reaction.
7. A list of metals in the order of how vigorously they react is called The __________ series.
10. The process of separating metal and rock using high temperatures.
11. This is a substance containing elements which are chemically bonded to each other.
13. Iron fillings burn in oxygen to give iron _______.
16. Sodium reacts with water to give sodium ________ and hydrogen.
21. A solution of a metal oxide is _________, with a pH > 7.
22. An element contains only one type of ______.
23. Copper is _____ reactive than iron.