Question

The heating curve below shows the temperature change that occurs as a solid is heated. What is occurring at segment CD of the graph?

Answer 1

A line graph showing the heating curve of a substance being heated from the solid phase all the way to the gas phase. From left to right across the x-axis, the different regions of the heating curve are labeled with variables A through F. First, there is an incline with a positive slope labeled AB, followed by a horizontal region labeled BC. Then there is another incline with a positive slope labeled CD, followed by another horizontal region labeled DE. The end of the heating curve shows another incline with a positive slope labeled EF.


boiling a liquid

melting a solid

heating a liquid

heating a solid

Answer 2

@aaronq

Answer 3

@sweetburger

Answer 4

heating a liquid

Answer 5

AB is the heating of a solid BC is the melting of a solid CD is the heating of a liquid DE is the boiling of a liquid EF is the heating of a gas

Answer 6

do u get it? or u need full explanation?

Answer 7

Well we could go into sensible and insensible heat and other such things that relate such as intermolecular forces.

Answer 8

yeah i meant in terms of intermolecular forces

Answer 9

the slopes basically represents weakening/ breaking of intermolecular forces

Answer 10

horizontal lines represent change in state

Answer 11

I got it thanks guys.

Answer 12

@Somy I thought the slope was for the heating of the substance in a sense of change of temperature and the horizontal parts were the breaking of intermolecular forces

Answer 13

no, actually during the heating process intermolecular forces start breaking, in horizontal line its just a change is state, that's what i remember

Answer 14

horizontal line show that all the intermolecular forces are weakened/ broken and thus you see a change in state

Answer 15

Well, glad I learned something too then.

Answer 16

:D