Question

The melting point and boiling point of Substance A are -259°C and -253°C, respectively. Which state of matter is Substance A likely to be in at 25°C?

a) Solid
b) Liquid
c) Gas
d) Sublime

Substance B has a melting point of 0°C and a boiling point of 100°C. What is the state of Substance B at 25°C?
a) Solid
b) Liquid
c) Gas
d) Sublime

Substance C sublimes at 3700°C. At 25°C, what state of matter is Substance C in?
a) Solid
b) Liquid
c) Gas
d) Sublime

The melting point and boiling point of Substance D are -116°C and 34.5°C, respectively. What state is Substance D likely in at 25°C?
a) Solid
b) Liquid
c) Gas
d) Sublime

Substance E has a melting point of 801°C and a boiling point of 1413°C. What is the state of Substance E at 25°C?
a) Solid
b) Liquid
c) Gas
d) Sublime

Answer 1

Substance A is gas, B is liquid, C is solid, D is liquid, and E is solid at 25°C, respective to their melting and boiling points.

Step-by-step explanation:

The state of matter substances are likely to be at a certain temperature can be determined by their melting and boiling points, based on the premise that at temperatures:

• Below the melting point, substances are solid.
• Between the melting and boiling points, they are liquid.
• Above the boiling point, they are gaseous.

For Substance A, with melting point -259°C and boiling point -253°C, at 25°C, it would be in gas state.

Substance B, with melting point 0°C and boiling point 100°C, at 25°C, would be in liquid state.

Substance C, which sublimes at 3700°C, would be in solid state at 25°C.

Substance D, with melting point -116°C and boiling point 34.5°C, at 25°C, would be in liquid state.

Substance E, with melting point 801°C and boiling point 1413°C, at 25°C, would be solid.