Vocabulary
What is pressure?
The amount of force on the surface of a substance
When particles are tightly packed in definite shape and size particles vibrate slightly have shape and volume it is a _______________.
A solid
The melting point is actually the same temperature as the _________ __________.
Freezing point
True or False: A liter of water will boil at the same temperature as a milliliter of water.
TRUE
What are two types of solids?
Crystalline and Amorphous
Define surface tension.
The force on the surface of the liquid that keeps the particles together.
In what state does a particles move freely, fill the space they are in, move rapidly, no shape or volume?
A gas
As heat is applied to matter, which direction does the temperature go?
Temperature increases or goes up
How does a liquid differ from a solid?
The particles move more have more energy and the shape can change
What are the two gas laws?
Boyle’s Law and Charles’s Law
Define viscosity.
The resistance of a gas or liquid to flow (thickness)
What happens to the particles when a state changes?
Particles heat up and gain energy or cool off and lose energy
What 3 dimensions measure volume?
Length, width, height
Describe the surface tension and viscosity of vegetable oil and vinegar.
Oil has a greater surface tension and viscosity than vinegar
What changes a state of matter?
When energy/heat is added or subtracted- Temperature.
What is an endothermic change?
Energy is taken into a substance (absorbed)
What is formed by the particles slightly apart, some energy moving them, and slide over each other so it takes the shape of its container, and has a volume?
A liquid
What is an example of an exothermic change?
Freezing is an exothermic change so is condensation.
What happens to the particles as a liquid turns to a gas?
The particles speed up movement and pull apart and spread out to fill a space
When a jar of water evaporates what is happening to the particles leaving the jar?
The particles leaving the jar are speeding up and spreading out and turning to gas
What is an exothermic change?
Taking away energy from a substance
The 3 states of matter all have some things in common, how are they alike?
They all have particles that move.
Why did the cinnamon spray move across the room after I sprayed it?
The particles moved and spread out to fill the room.
As heat is applied to matter, which direction does the temperature go?
Temperature increases or goes up
What does Charles’s Law say about the air in a balloon when heat is added to it?
As heat is added the particles spread out and the balloon expands.