KPT 2: Heating curve

As ice is heated, the temperature of the water _______________ throughout.

• increases

• decreases

• remains the same

• NONE OF THE ABOVE :O

As ice is heated, the temperature of the water _______________ throughout.

• increases

• decreases

• remains the same

• NONE OF THE ABOVE :O

Substance Z was heated over time. The heating curve is shown in the diagram.

What is the melting point of Z?

• -50 ^oC

• -39 ^oC

• 200 ^oC

• 357 ^oC

What is the state of Z from point P to Q?

• solid

• solid and liquid

• liquid

• liquid and gas

• gas

What is the state of Z from point Q to R?

• solid

• solid and liquid

• liquid

• liquid and gas

• gas

Using KPT, describe the movement and arrangement of the particles during the process of melting: Part 1

From P to Q, particles gain energy, vibrate faster move and closer together.

• True

• False

Using KPT, describe the movement and arrangement of the particles during the process of melting: Part 2

From Q to R, particles gain enough energy to overcome the forces of attraction and move further apart.

• True

• False

Using KPT, describe the movement and arrangement of the particles during the process of melting: Part 3

Particles slide over one another in random directions and are very closely packed in a disorderly manner

• True

• False

Substance Z was cooled from 400^oC till -50^oC. Draw the cooling curve for substance Z.