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2.1.1 States of matter and changes of state

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Question 3
a.

Identify the state of matter (solid, liquid, or gas) corresponding to each of the following descriptions:

  • State X: Molecules vibrate about fixed positions.
  • State Y: Molecules are packed closely together but can move around and slide past one another.
  • State Z: Molecules are far apart and move freely and rapidly in all directions.
[3]
b.

A sealed, rigid steel canister contains helium gas. The temperature of the helium gas inside the canister is increased.

Describe how the increase in temperature affects the motion of the helium atoms.

[1]
c.

State how the pressure of the helium gas changes, and explain this change in terms of the collisions of the atoms with the canister walls.

[3]
d.

A liquid-in-glass thermometer consists of a reservoir bulb containing a liquid and a narrow capillary tube.

State the name of a liquid (other than mercury) that is commonly used in these thermometers.

[1]
e.

Describe and explain what happens to the liquid in the thermometer as the temperature increases.

[2]
Markscheme

2.1.1 States of matter and changes of state Questions

  1. IGCSE
  2. /Physics
  3. /2.1.1 States of matter and changes of state

44 exam-style questions on CIE IGCSE Physics 2.1.1 States of matter and changes of state. Each one has a worked solution and a mark scheme showing where the marks go.

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