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A student investigated the three states of matter - AQA - GCSE Physics - Question 1 - 2021 - Paper 1

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A student investigated the three states of matter. The arrangement of particles in the three states of matter are different. Draw one line from each particle arran... show full transcript

Worked Solution & Example Answer:A student investigated the three states of matter - AQA - GCSE Physics - Question 1 - 2021 - Paper 1

Step 1

Draw one line from each particle arrangement to the state of matter.

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Answer

  1. Solid: Particles are closely packed together in a fixed arrangement.

  2. Liquid: Particles are close but can move past each other.

  3. Gas: Particles are far apart and move freely.

Step 2

Which part of Figure 1 shows when the ice was melting?

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Answer

B

Step 3

Which part of Figure 1 shows when the water was boiling?

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Answer

D

Step 4

Which property of the water particles changes as the temperature of the water increases?

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Answer

The kinetic energy of the particles

Step 5

Calculate the thermal energy needed to melt 0.250 kg of ice at 0 °C.

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Answer

Using the formula:

extthermalenergy=extmassimesextspecificlatentheat ext{thermal energy} = ext{mass} imes ext{specific latent heat}

Substituting the values:

extthermalenergy=0.250extkgimes334000extJ/kg ext{thermal energy} = 0.250 ext{ kg} imes 334 000 ext{ J/kg}

Calculating:

extthermalenergy=83500extJ ext{thermal energy} = 83 500 ext{ J}

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