Cooling Curve Flashcards
(15 cards)
What does the strength of attractive forces between particles in a substance depend on?
The distance between the particles.
What does the average kinetic energy of the particles in a substance depend on?
Temperature.
What can cause matter to change its state?
Heating or cooling.
When do changes in the state of matter occur?
At specific temperatures.
What does the heating curve show?
The changes that take place when a solid substance is heated.
Fill in the blank: The temperature of the solid substance increases until it reaches its _______.
melting point.
What happens to the kinetic energy of the particles in a solid as it approaches its melting point?
It increases.
How do particles in a solid behave as they gain kinetic energy?
They vibrate more quickly about their fixed positions.
What occurs when the forces of attraction between particles in a solid are overcome?
Melting occurs.
What happens to the temperature during the melting process?
It remains constant.
Fill in the blank: The temperature of the liquid substance increases until it reaches its _______.
boiling point.
What happens to the kinetic energy of the particles in a liquid as it approaches its boiling point?
It increases.
What occurs when boiling happens in a substance?
The substance changes from a liquid to a gas.
What happens to the temperature during the boiling process?
It remains constant.
True or False: The particles in a gas move more slowly than those in a liquid.
False.
