SCIENCE FORM 1 CHAPTER 3

What is meant by the mass of an object?

• Quantity of substance in an object.

• Pull of gravity on an object.

• Pressure exerted by an object

• Total force exerted by an object.

Which is the best definition for matter?

• Anything which has shape.

• Anything which has volume

• Anything which has volume and mass

• Anything which has mass and occupies space

A ballon expands and its weight increases as it is filled with water. This shows that...

• water has mass

• water takes up spaces

• water is matter

Solids possess fixed shapes and volumes because their particles...

• do not have energy

• attract one another

• keep the same positions

• are of the same size

The perfumes used by a girl can be detected when she passes by. How can this be explained?

• Particles of perfume diffuse quickly through the air

• Particles of perfume combine with air particles

• Particles of perfume float in the air

• Perfume sets free smell into the air

Which statement below is incorrect?

• Particles of solids vibrate in their own positions.

• Particles in liquids can move about freely

• Particles in gases diffuse in all directions

• The movement of particles in matter decreases with rise in temperature

What is meant by the density of a substance?

• The number of particles in 1 cm³ of a substance

• The volume of 1 g of a substance

• The space taken up by 1 g of a substance

• The mass per unit volume of a substance

An object weighing 40 g displaces 5 cm³ of water in a measuring cylinder. What is the density of the object?

• 0.125 g/cm³

• 35 g/cm³

• 8 g/cm³

• 4.5 g/cm³

A piece of aluminium weighing 260 g is placed into a larger measuring cylinder containing water. if the density of aluminium is 2.6 g/cm³ , what volume of water will it displaces?

• 10 cm³

• 50 cm³

• 26 cm³

• 100 cm³

Which one of the following does not depend on how small or large a sample of the material is used in determining it?

• Density

• Mass

• Weight

• Volume