Chemistry-States of matter Flashcards
What happens during melting?
Solid changes to liquid at melting point
What are the three primary states of matter?
Solid, liquid, gas
True or False: Solids have a definite shape and volume.
True
Fill in the blank: In a liquid, particles are _______ than in a solid.
closer together but can move freely
What state of matter has a definite volume but no definite shape?
Liquid
Which state of matter has particles that are far apart and move freely?
Gas
What happens to the particles in a solid when it is heated?
They vibrate faster and may change to a liquid.
True or False: Gases have a definite shape and volume.
False
What is the term for the change from solid to liquid?
Melting
What is the process called when a liquid turns into a gas?
Evaporation
Fill in the blank: The opposite of condensation is _______.
Evaporation
What is the term for the change from gas to solid?
Deposition
True or False: Plasma is considered a state of matter.
True
What is the term for the change from liquid to solid?
Freezing
What happens to the volume of a gas when it is compressed?
It decreases.
What is the main difference between a liquid and a gas?
Liquids have a fixed volume; gases do not.
Fill in the blank: The _______ theory explains the behavior of particles in solids, liquids, and gases.
particle
What is the process called when a solid changes directly into a gas?
Sublimation
True or False: All substances can exist in all three states of matter.
False
What property of solids allows them to maintain shape?
Strong intermolecular forces
What happens to the intermolecular forces in a substance as it changes from solid to liquid?
They weaken.
What is the main characteristic of plasma?
It consists of charged particles and has no fixed shape or volume.
Fill in the blank: The temperature at which a solid becomes a liquid is called its _______.
melting point
What is the term for the temperature at which a liquid becomes a gas?
Boiling point
