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level: Changes in state

Questions and Answers List

Question	Answer
What happens when you increase the temperature of gas particles?	They move faster, and hit walls surrounding them harder and more often
What happens when you heat a gas inside an enclosed space?	Pressure increases
What happens when you reduce the size of a space that a gas is enclosed in?	They hit the walls more often, causing higher pressure
What is the name of the process where particles in a gas spread out slowly in the air?	Diffusion
Diffusion is a slow process, why is this?	Gas particles bump into air particles, slowing them down
What is the term used to describe the changing of one type of matter into another?	Change of state
What happens to a solid object if the particles are heated to a level where they break free from their fixed point?	It melts into a liquid
What happens to the particles in a solid object when heated?	They gain energy
What happens to the particles in a solid object when they have gained energy from being heated?	They move faster and the forces holding them weaken
What happens to the particles in a liquid when heated?	They gain energy
What happens to the particles in a liquid when they have gained energy from being heated?	They move faster and the forces holding them weaken
What happens to a liquid when it reaches a temperature high enough for the particles to break the forces holding them?	It boils, turning into a gas
What is not affected when a certain matter changes state?	Volume