Page 196 - SK Year 5 Science DLP

MATTER CHANGES
LET’S TEST
LET’S TEST MATTER CHANGES
ITS STATE
ITS STATE
ACTIVITY 1

To describe the changes in the state of matter
AIM
of water during freezing process.

APPARATUS AND Polystyrene box with its lid, dropper,
MATERIALS test tube, ice cubes, salt, water, and
food colouring.
STEPS

1. Fill the polystyrene box with some ice cubes until it is half-full and mix with
200 g of salt.
2. Put 10 drops of water and three drops of food colouring into the test tube.
3. Shake the solution of water and food colouring in the test tube.
4. Put the test tube into the polystyrene box containing the mixture of ice
and salt.
5. Close the polystyrene box using the lid and leave it for 30 minutes.
6. Observe the state of the water in the test tube after 30 minutes.
7. Discuss the result of the observation and make a conclusion.

polystyrene box

(a) What are the states of matter of the water in the test tube at the
beginning and the end of the activity?
(b) What is the change in the state of matter of the water in this
activity? State the process involved.
(c) Give an inference for your observation.

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8.2.1, 8.2.4