IGCSE Review - Matter

Which answer best describes the difference between these 2 blocks?

• Block A has a larger volume than block B

• Block B is denser than block A

• Block A has more mass than block B

• Block A has more tightly packed particles than block B

What is the formula for density?

• Density = volume x mass

• Density = volume / mass

• Density = mass / volume

• Density = 1/2 x mass x volume

A block of steel has a volume of 50 cm³, a length of 4 cm and a width of 5 cm. The height of the block is

• 2 cm

• 2.5 cm

• 5 cm

• 10 cm

A block of wood has a mass of 20 g and a volume of 25 cm³. What is the density of wood?

• 500 g/cm³

• 50 g/cm³

• 0.8 g/cm³

• 1.25 g/cm³

A copper wire has a density of 9 g/cm³ and a volume of 36 cm³. What is the mass of the copper wire?

• 324 g

• 4 g

• 0.25 g

• 25 g

A glass slate has a mass of 400 g and a density of 2.5 g/cm³. What is the volume of glass?

• 100 cm³

• 160 cm³

• 800 cm³

• 1000 cm³

Which of these is the correct formula to calculate the pressure on an area?

• P = F x A

• P = F / A

• P = F x d

• P = F / d

A block of mass 3000 g rests on a desk as shown.

What is the weight of the block?

• 0.3 kg

• 3 kg

• 3 N

• 30 N

A block of mass 3000 g rests on a desk as shown.

What pressure does the block cause on the desk?

• 1500 Pa

• 150 Pa

• 7500 Pa

• 750 Pa

The diagram shows particles of gas inside a box.

Which of these statements describes the pressure inside the box if the volume is decreased?

• The pressure decreases as there are less frequent collisions with the sides.

• The pressure decreases as there are more frequent collisions with the sides.

• The pressure increases as there are less frequent collisions with the sides.

• The pressure increases as there are more frequent collisions with the sides.