Question

Q5. The table below shows the melting points and boiling points of four elements
Melting Point (°C) Boiling Point (°C)
357
-39
Element
Mercury
Copper
Nitrogen
Calcium
1085
2562
-210
-196
842
1484
Answer the following using the table above. Which element in the table is:
(i) a liquid at 0°C?
(ii) a solid at 1000°C?
(iii) a gas at 500°C?
(iv) What state is Nitrogen at -200°C?

Answer 1

i. Mercury

ii. copper

iii. Mercury

iv.Nitrogen becomes a liquid at -200°C. Liquid nitrogen looks like water