1. METALS
1. How many metals are known today?
86 metals are known today.

2. 2. What was the first metal discovered?
The first metal discovered was gold.

3. 3. What is the most abundant metal on Earth?
The most abundant metal on Earth is aluminium.

4. 4. What is the science of metals and alloys?
The science of metals and alloys is metallurgy.

5. 5. What is a mixture of metals and non-metals to form a new substance?
The mixture of metals and non- metals it’s called alloy.

6. 6. What is a factory that heats metal up to a liquid form so it can be poured into a mold?
It’s called foundry.

7. 7. What is heating a metal shape to shape it, without getting it to a liquid state called?
It’s called forging.

8. 8. What is lengthening a metal by flattening it called?
The lengthening a metal by flattening it is called drawing.
Drawing is also:

9. 9. What is called when a metal contains iron?
When a metal contains iron is called ferrous.

10. 10. What is the thickness of metal measured in?
The thickness of a metal is measured in gauge.

11. 11. What is used to hammer metal?
It’s used a hammer called ball-peen hammer.

12. 12. What is used to cut a heavy metal bar?
It’s used a type of knife called shear.

13. 13. What is used to make a circle from a metal bar?
It’s used a scroll bender.

14. 14. What would you do if you didn’t want a seem?
I will weld it.

15. 15. What would you do if you didn’t want to use heat?
I will bolt it.

16. 16. What do you use in electrical devices?
I will use a solder.

17. 17. What is the most common solder made out of?
It’s used tin and lead.

18. 18. What is used to clean an connection before soldering?
It’s used a flux.

19. 19. What is bigger, a higher awg or lower awg?
It’s a lower.

21. 20. What is cleaning the soldering iron tip by melting solder on it called?
It’s called tinning.