States of Matter
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what is the definition of fluid?
Gas or liquid
what is matter?
any substance that has a mass and volume
What are the three states of matter?
Solid, liquid, and gas
What factors influence the state of matter in a substance?
Temperature and Pressure
Any matter can be liquid, solid, or gas (True/False)
True
Which two states of matter have a fixed volume?
Solid and Liquid
which state of matter has a low density?
Gas
which state of matter has a definite shape?
Solid
What is the melting point of a substance?
The temperature that a substance must reach to turn from a solid to a liquid
What is the boiling point of a substance
The temperature that a substance must reach to turn from a liquid to a gas
What is it called when a gas turns into a liquid?
condensation
What is it called when a liquid turns into a solid?
freezing
What is it called when a gas turns into a solid?
sublimation
What is it called when a solid turns into a gas?
deposition
What is evaporation?
Change of state from a liquid into a vapour at a temperature below the boiling point
Where does evaporation occur?
At the surface of the liquid
What is volatility?
The property of how easily a liquid evaporates
What is a pure substance?
A substance made of one type of particle (element or compound)
Pure substances have boiling points that are not exact (True/False)
False
What is an atom?
The smallest unit of matter that retains its properties
What is a molecule?
A physically OR chemically bonded group of atoms
What are (intermolecular) forces?
the forces that occur between all molecules, causing them to attract each other
What is a mixture?
Two or more substances mixed together but not chemically bonded
What is a solution?
A result of a solute dissolving in a solvent