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Three things that are needed for rust to happen are __________ .
What does it mean when a substance is said to be soluble?
In how many different states does water exists?
Choose one correct answer in each drop-down list.
(i) is the water in the form of a gas resulting from heating water or ice.
(ii) water which collects as droplets on a cold surface when humid air is in contact with it.
(iii) means it can dissolve things for example water can dissolve salt.
Water freezes to form ice means the water losses heat.
Water boils to form steam means the heat is loss.
Haze is caused by condensation.
Study the figure shown.
(i) Name the process Z?
Study the diagram in figure below.
(ii) Name the process Y?
Figure shows an ice cube placed in a box.
Which of the following statements about melting ice is correct?
Match the given words with the correct statement of the experiment statement below.
(a) Some cubes were dropped into a glass of lemonade water.
(b) After 10 minutes, the lemonade water in a glass becomes .
(c) The ice cubes would become in size.
Fill in the Correct Answer.
The change of state from liquid to solid is .
Fill in the Correct Answer.
The sand is in a glass of water.
Sally has added a small amount of sugar into her hot chocolate. Choose the three correct statements for the experiment:
Arrange the following items in the correct order.