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6. HOW IS MORTAR FORMED
- STONES
- CEMENT, SAND AND WATER
- SAND AND GRAVEL
7. What is limestone made out of
- calcium carbonate
- calcium bicarbonate
- calcium sulfate
8. What do electrons do
- Move around the nucleus
- disapear
- Orbit eachother
9. what is formed when limestone reacts with an acid
- calcium salt, carbon dioxide, water
- Metal, oxygen, water
- Calcium salt, hydrogen, carbon dioxide
10. WHAT IS AN ORE
- A ROCK
- A ROCK WITH ENOUGH METAL WORTH EXTRACTING
- AN ELEMENT
11. What charge do neutrons have
- positive
- Neutral
- Negative
12. Where is the nucleus found
- On the outside shell
- The middle of the atom
- On the atoms first shell
- Inside an electron particle
13. Element in the same group have
- Discovered in the same year
- The same number of electrons in the outer shell
- the same mass
14. Which element has the electron structure 2,8,8
- Argon
- sulfur
- oxygen
- nitrogen
15. WHICH SIDE OF ELECTROLYSIS IS POSITIVE
16. OXIDATION IS..
- LOSS OF OXYGEN
- GAIN OF OXIDATION
17. HOW IS CEMENT FORMED
- LIMESTONE AND POWDERED CLAY
- SAND AND GRAVEL
- AGGREGATE
18. What is the symbol for Magnesium
19. What charge do protons have
- neutral
- positive
- negative
20. Electrons always occupy...