Science Year 10 Term 2 Patrick

5. The sum of protons and neutrons in the nucleus
6. The salt of carbonic acid
10. Ca(OH)2 --> CaO + H2O Synthesis or decomposition?
11. The salt of hydrochloric acid
14. The type of radioactivity that couldn't go through walls but was the largest of its kind
16. The man that studied with bohr during his electron shell discovery
18. Elements are the building blocks of all ____.
19. If an element has a mass number of 12, how many electrons does it have?
20. Type of displacement reaction of ZnCl + Na --> NaCl + Zn
21. The man that discovered the electron shell.
22. The most abundant element in the air
25. The maximum number of electrons if the element has 3 shells

1. The salt of nitric acid
2. Which electron shell was the most important when determining how it would react
3. A way of finding an element in the periodic table in the vertical plain
4. The man who discovered the neutrons
7. The person to make the periodic table
8. Greek philosopher who first thought of the existence of tiny invisible particles
9. BaO + H2O --> Ba(OH)2 Synthesis or decomposition reaction?
12. a way to find an element in the periodic table in the horizontal plain
13. The amount of protons in an element
15. Type of radioactivity that was harmful to humans
17. Na2S + AgNO3 --> NaNO3 + Ag2S Single displacement or double displacement?
23. The maximum number of electron if the element has 2 shells
24. If you had 7 electrons, how many would go in the second shell?