Question

Substance 1 is brittle substance 2 meltd at 5 c and boils at 150 c substance 3 has high melting point of 800 c what is the state of these substance at room temperature ond pressure give reason

Answer 1

I think the answers are
substance 1→ solid (because it can break)
substance 2→ liquid
substance 3→ solid
hope it helps...........

Answer 2

Explanation:

Substance 1 is brittle that means it can break easily. Therefore, substance 1 is a solid as only a solid substance or matter can break and no liquid or gaseous substance can break.

Substance 2 melted at 5 degree Celsius and boils at 150 degree Celsius, this means that it can melt easily at room temperature which is generally 25 degree Celsius. Thus, this substance 2 is liquid.

Substance 3 has high melting point of 800 degree Celsius this means it will not get affected at room temperature. Therefore, substance 3 is a solid which requires very high temperature in order to change its state.