Question

4. Solid ‘X’ turns into a liquid at 80 0C and into a gas at 140 0C. Describe the changes in the

particles of X when it is heated from

a. 70 0C to 85 0C

Answer 1

Step-by-step explanation:

The melting point of the solid is 80°C

Vapor point of the liquid is 140°C

What happens to particles of X when heated from 70°C to 85°C?

• Firstly, there would be a phase change from solid to liquid.
• Below the melting point, a substance will exist as a solid.
• With increase in thermal energy inputted by heat, as the temperature climbs above the melting point, it changes to the liquid.
• When the solid begins to heat up, the particles of X starts vibrating about their fixed point.
• At they melting point, they break lose and flow to form a liquid.
• The particles will have more kinetic energy.