Heating curves practice (1)

Front

In a heating curve, diagonal lines indicate temperature is __________, while flat lines indicate temperature is __________.

Back

Changing, constant

Front

At which letter is the substance changing its state of matter?

Back

B and D

Front

The melting point of the sample is

Back

-60 ºC

Front

NaCl was heated starting at an initial temperature of 0°C. The heating curve is shown in the picture. What is the melting point of this substance?

Back

801°C

Front

How many states of matter are present during line segment BC?

Back

Two

Front

Which letter indicates where water is in both the solid and liquid phase at the same time? Options: A, B, C, D, E

Back

B