States of Matter
Particle Theory
Properties of Matter
Kinetic Theory
Random
100
What are the 4 states of matter?
Solid, Liquid, Gas, Plasma
100
Who first proposed the particle model of matter?
John Dalton
100
What is Viscosity?
The thickness of a liquid
100
What is kinetic energy?
Movement energy
100
Who first came up with the idea of atoms?
Democritus
200
What is the process called where a solid changes to a liquid?
melting
200
When particles are lined up in a regular arrangement and held close together, they are in what state of matter?
Solid
200
What are the two types of strength?
Tensile and compressional
200
If we add heat to a substance, what are we adding?
Kinetic energy.
200
All matter has what two things?
Mass and Volume
300
When a gas changes to a liquid, it is called . . .
condensation
300
When particles are far apart and move quickly on their own, they are in what state of matter?
Gas
300
What is density?
The amount of mass per volume
300
What happens to particles when we add heat?
They move faster as they have more kinetic energy.
300
What is diffusion? Give an example.
The movement of something with high concentration into an area of lower concentration.
Tea bag in water, perfume, etc.
400
What are the processes by which a liquid turns to a solid, or to a gas?
solidification (freezing), and evaporation
400
Draw the particles in all 3 states of matter according to the Particle Model
400
A very hard substance will ____________ easily, and is called ______________.
Break; brittle.
400
Heat causes substances to _________. When their temperature decreases, the substance ____________.
Expand; contract
400
Explain the difference between tensile strength and compressional strength
Tensile strength is a measure of the flexibility of the bonds between particles. Compressional strength is the ability to withstand large forces.
500
What is the process where a solid turns directly into a gas?
Sublimation
500
What is wrong with this representation of the Particle model?
The liquid particles are shown with space between them, but liquids cannot be compressed because their is no space between the particles. They should also not be lined up in order as in liquids the particles move around each other.
500
What is compressibility? Which states of matter can be compressed and which cannot?
The ability of a substance to be squashed or compressed.
Gas can be compressed; Solids and liquids cannot be compressed.
500
What are expansion joints for?
To allow for substances to expand and contract with the addition and decrease of temperature
500
List 5 things we know about atoms
They cannot be divided
We cannot create or destroy them
Atoms have mass
They are too small to be seen
They are always moving
There are spaces between particles
Different atoms combine to form compounds
Etc