STATES OF MATTER

Kato is investigating the properties of different foods. He uses a thermometer to record the melting point of three types of fat. The temperature of Kato’s kitchen is 18 C. At this temperature..

• Coconut oil and Olive oil are solids

• Only butter is a solid

• Coconut oil and butter are solids

• None of the fats are solid

At what temperature does water begin to freeze?

• a. 0 C

• b. 32 C

• c. 100 C

• d. 212 C

What unit is used to measure the boiling point of something?

• a. litres

• b. grams

• c. degrees Celsius

• d. centimetres

Zara has three ice cubes of different sizes. She wants to know which ice cube will take the longest to melt. She takes the ice cubes out of the freezer at the same time. What information does Zara need to write down to reach a conclusion?

• a. the mass of each ice cube

• b. the time that each ice cube spent inside the freezer

• c. the time it takes for each ice cube to melt completely

• d. the time it takes for each ice cube to start melting

Farrah is describing a liquid to Ivan. Which description should she choose?

• a. It can be cut

• b. It cannot be seen

• c. It can be squashed

• d. It can be poured

What is the volume of the water in the measuring cylinder.

• a. 3.7 ml

• b. 2.9 ml

• c. 4.2 ml

• d. 5.1 ml

In the water cycle, which of these processes is condensation?

• a. Water from the land and sea is heated by the Sun and turns into water vapor

• b. Water vapour rises from the land and sea into the air

• c. Water vapour cools and changes into water droplets, forming clouds

• d. Water falls from clouds as rain or snow

Ayesha fills one beaker with 150ml of water and another beaker with 150ml of salt water. She puts the beakers in a freezer. What questions is Ayesha trying to answer?

• a. Which beaker is best for freezing water?

• b. Will water take less time to freeze than salt water?

• c. What is the freezing point of water?

• d. What is the freezing point of salt?

Salma has built a model of the water cycle. What would happen if Salma moved the lamp closer to the lid of the container?

• a. Evaporation would speed up

• b. Evaporation would slow down

• c. There would be more water inside the container

• d. There would be less water inside the container

Jack compares the time it takes for water to evaporate in two different places. He must choose the two cups with the most similar amount of water. Which two cups should Jack choose?

• a. 2 and 4

• b. 1 and 3

• c. 2 and 3

• d. 3 and 5