States of Matter

Q.

Pick the odd one out.

1. Building

2. Wood

3. Metal

4. Juice

Q.

Explain the change of matter from liquid state to solid state.

Q. The space between the molecules of a substance is called intermolecular space.

1. True
2. False

Q.

Water in a glass at room temperature is in which state?

1. Gaseous

2. Liquid

3. Solid

4. Vapour

Q.

Water is in _____ state in the form of ice.

1. liquid
2. gas
3. molten
4. solid

Q.

14. Vineet was feeling very thirsty so he took out some ice cubes to add into the water and forgot to keep the ice tray back. After some time, when he came back he saw all the ice present in the tray had changed into water. He got confused and asked his teacher to explain the reason behind it.

(a) Does water exist in any other form?

(b) What happens to ice when kept at room temperature?

(c) What values do you observe in Vineet?

Q.

On removing the thermal energy from a substance, the vibration of the molecules ___.

1. Decreases

2. Remains unchanged

3. Increases

4. None of these

Q. The given graph shows different levels of oxygen in the air at different times in a park. Which point (W, X, Y or Z) on the graph, shows the level of oxygen in the air at night?

1. W
2. Z
3. X
4. Y

Q. Read the given passage and select the correct inferences from the information provided in it.

In liquids, the molecules are not packed as close together as in solids. There are spaces between the molecules. So, they can move around more freely. When sugar is dissolved in water, the sugar molecules fill these empty spaces.

1. When sugar dissolves in water, the volume of water increases.
2. Liquid has no definite shape and volume.
3. Liquid can flow.
4. When all the empty spaces between the water molecules are filled with sugar molecules, then no more sugar can be dissolved.

1. (III) and (IV) only

2. (II) and (III) only

3. (I) and (III) only

4. (I) and (IV) only

Q. _____ has no definite shape but has a definite volume.

1. Mercury
2. Helium
3. Oxygen
4. Carbon

Q.

Matter can change its physical state depending on temperature. What happens if water is allowed to cool?

1. Water vapour changes into water.

2. Water changes into water vapour.

3. Water changes from solid state into liquid state.

4. Water changes from liquid state to solid state.

Q.

Why do we see water droplets on the outer surface of a glass that contains ice-cold water?

Q.

Which is the odd one in state of matter?

1. Orange juice

2. Strawberry milkshake

3. Chocolate icecream

4. Lime soda

Q.

Without liquids, life wouldn't exist on Earth.

1. True

2. False

Q.

Everything in our surrounding is made up of matter . Matter is present in three states that is solid , liquid and gasses. Which of the following is available in all the states of matter in our daily life.

1. Wood

2. Water

3. Fruit

4. Iron

Q.

Name the following on the basis of your existing knowledge and understanding of concepts:

Any three liquids

Q.

What is a vapour?