Chemistry Revision

2. An alloy used for making shells of ammunition rounds.
4. Formation of mist or fog is an example of _______ change.
6. A new product formed when iron reacts with moist air.
8. Iodine is used for preparing _______ which is used as medicine.
9. An alloy made up of 95% Al, 4% Copper, 0.5 Mg, and 0.5% Mn
11. A property by virtue of which a substance can bear a lot of strain without breaking.
14. A white metal with a light blue tinge used for galvanising iron sheets.
15. Gold amalgam is prepared by dissolving gold in _______
17. It is a non-metal used in the manufacture of hydrochloric acid
18. Deficiency of _________ in the body can lead to Goitre

1. A crystalline form of carbon used as pencil lead.
3. blackening of silverware is an example of _______ change.
5. A compound which turns from yellow to red on heating.
7. A metal used for making electrical circuits for very sensitive appliances.
10. When sugar decomposes, it _______a large amount of heat energy.
12. ________ is used in the construction of T.V. tower, transmission tower, microwave tower.
13. A change in which a large amount of heat energy is released.
16. A non-metal essential for conbustion