CIE iGCSE - Matter and Heat

Page 1

Density, pressure, particles, heat transfer

1. Which of these sentences is true?
• A). In a gas the particles have strong forces between them
• B) Liquids fill completely the container they are in
• C) The forces are strong between particles in a solid
• D) Particles in a liquid move faster than in a gas
Which of these descriptions matches which state of matter?

2. Particles are widely separated.

3. Does not have a fixed shape.

4. Strong bonds hold the particles firmly in place.

5. Which answer best describes the difference between these 2 blocks?

 BLOCK A BLOCK B

• A) Block A has a larger volume than block B
• B) Block B is denser than block A
• C) Block A has more mass than block B
• D) Block A has more tightly packed particles than block B

6. What is the formula for density?

• A) Density = volume x mass
• B) Density = volume / mass
• C) Density = mass / volume
• D) Density =  ½ x mass x (volume)

7. Which of these calculations is the right one to find the mass of water in a cylinder?

• A) (mass of cylinder) + (mass of water and cylinder)
• B) ( mass of cylinder and water) - (mass of water)
• C) (mass of cylinder) - (mass of water and cylinder)
• D) ( mass of cylinder and water) - (mass of cylinder)

What are the missing values in this table?

 Substance Mass (g) Volume(cm3) Density (g/cm3) 8 Wood 20 25 ? 500 50 0.8 1.25 9 Copper ? 324 4 0.25 25 36 9 10 Glass 400 ? 100 160 800 1000 2.5

11. Which of the following units cannot be used for pressure?

• A) Pascals
• B) N/m
• C) N/m2
• D) atmospheres

12. What is the formula for pressure?

• A) P = F x A
• B) P = F / A
• C) P = F x d
• D) P = F / d

13. What pressure does this block of weight 6N cause on the desk?

• A) 0.2 N/cm2
• B) 0.5 N/cm2
• C) 2 N/cm2
• D) 5 N/cm2

What are the missing values in this table showing the pressure under blocks of steel?

 Length (cm) Width (cm) Area (cm2) Force on ground (N) Pressure (N/cm2) 14 4 5 20 20 ? 10 1 400 40 15 12 10 120 ? 30 0.033 360 480 4 16+17 4 ? 2000 1 0.0125 5 ? 8000 4 20 0.05 400 20