Y9 Keywords

5. A toxic gas produced during incomplete combustion
8. A substance made from two or more types of atom
10. A mixture of metals
15. Came up with the theory of atoms as solid spheres
17. Gas that makes up 78% of the atmosphere
19. The name given to the list of metals used to work out how to extract them
21. The method used to remove salt from seawater to make it drinkable
23. Small solid pieces of carbon produced in combustion
26. A column on the periodic table
27. Discovered the nucleus and later the proton
30. A row on the periodic table
31. Gas that makes up 21% of the atmosphere
32. The method used to separate and identify soluble substances
35. Word meaning unreactive, used to describe Group 0
37. A rock containing enough metal compound to be economically viable to extract
39. Found in the centre of the atom, containing protons and neutrons
41. A substance that can be beaten or bent into shapes
42. The type of gas produced when nitrogen and oxygen in the air react at high temperatures
44. The name given to the number on the periodic table that tells you the number of protons and neutrons

1. A natural process that removes carbon dioxide from the atmosphere
2. Came up with the idea of electron shells
3. Gas that makes up rough 0.9% of the atmosphere
4. Where electrons are found in the atom
5. A greenhouse gas produced during complete combustion
6. The scientific word for burning
7. The gas produced when sulfur impurities react with oxygen during combustion
9. The name given to group 0 elements
11. The name given to the liquid in chromatography
12. The small particles that make up everything
13. Metals are good ___________ conductors
14. Name given to coal, oil and gas
16. The subatomic particle with a mass of 0 and a charge of -
18. The method used to remove insoluble solids from a liquid
20. A substance that makes a ringing sound when struck
22. Caused by nitrogen oxides and sulfur dioxides
24. Discovered the electron and made the plum pudding model
25. The subatomic particle with a mass of 1 and a charge of +
28. The subatomic particle with a mass of 1 and a charge of 0
29. The method used to disinfect water to make it potable
33. Metals have ______ melting points
34. Two or more substances that can be physically separated
36. A greenhouse gas released by cattle and rice farming
38. The name given to the number on the periodic table that tells you the number of protons
40. Discovered the neutron
43. A substance made of one type of atom