N Flashcards
(10 cards)
0
Q
Copper family?
A
Copper, silver, gold
1
Q
Rechargeable batteries? 2 elements
A
Cadmium, nickel
2
Q
Composition of air
A
21% oxygen. 78% nitrogen
3
Q
Compound of glass and sand
A
Silicon dioxide
4
Q
Iron family
A
Iron, cobalt, nickel
5
Q
Iron to produce steel- 4 elements
A
Chromium vanadium cobalt nickel
6
Q
2 hardest
A
Corundum
7
Q
Thermometers
A
Mercury
8
Q
Nuclear weapons
A
Plutonium
9
Q
Pollution control devices
A
Platinum