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When thermal energy is increased in a solid, what change in state is happening?
What happens to the movement of the particles in a substance when the thermal energy is increased?
Which two of these are included in the term 'fluids'?
Which of these is not a change of state?
Which of these best describes the atoms in a solid such as gold?
they move all over the place quickly
they move all over the place slowly
they vibrate about a fixed position
they do not move at all
Which of these describes the random bombardment of air molecules?
Which of these best describes evaporation?
the escape of more-energetic molecules from the surface of a liquid
the escape of more-energetic molecules from the surface of a gas
the escape of less-energetic molecules from the surface of a liquid
the escape of less-energetic molecules from the surface of a gas
Which of these conditions is the best for drying clothes?
hot, dry, still
cold, dry, windy
hot, wet, still
cold, wet, windy
hot, dry, windy
Which of these is the correct equation for specific heat capacity?
A mass of 5kg takes 2000J of energy to change its temperature from 40ºC to 50ºC. What is the specific heat capacity?
During a change of state the temperature of a substance...
Stays the same
Which quantity gives the thermal capacity of a beaker?
the thermal energy required to raise the temperature of the beaker by 1°C
the total volume of hot liquid that the beaker can hold
the total mass of hot liquid that the beaker can hold
the thermal energy required to change the state of the beaker at constant temperature
Brownian motion is defined as...
The random movement of small particles due to collisions with larger particles
The random movement of particles in a solid due to collisions with smaller surrounding particles
The random movement of particles around us
The random movement of particles in a fluid due to collisions with smaller surrounding particles
When a substance is heated what happens to the particles
They change state
They gain kinetic energy and move more
Happens to every molecule in a boiling liquid
Only happens to the particles at the surface
Will increase with a smaller surface area
Is the same as boiling
How does changing the temperature affect gas pressure?
Lower temperature means higher pressure
Higher temperature means higher pressure
Higher temperature means lower pressure
Temperature has no effect
When gas is heated it becomes...