Vocab 1
Vocab 2
Parts of an Atom
States of Matter
Phase Changes
100
What is the definition of an electron?
The part of the atom that is located on the outside of the nucleus, has a negative charge, and is responsible for reactivity (chemical reactions).
100
What is the definition of a Solid?
The state of matter when atoms are closely packed and touching one another while vibrating.
100
Where is the nucleus of an atom located?
In the center of the atom.
100
Describe the particle motion of a solid.
Atoms or particles are packed tightly, close to one another, and vibrating.
100
According to the diagram, how many phase changes are there?
Six
200
What is the definition of a proton?
The part of an atom that is located in the nucleus, has a positive charge, and is responsible for determining the type of element of the atom.
200
What is the definition of a Liquid?
The state of matter in which its atoms are closely packed and touching, but the atoms can move around each other and flow.
200
What is found in the nucleus of an atom?
Protons and Neutrons
200
Describe the particle motion of a liquid.
Atoms or Particles are closely packed and touching one another, but can flow freely around each other.
200
What happens to the energy in the Melting phase change?
Energy increases turning matter from solid into a liquid.
300
What is the definition of charge?
The property of matter to attract or repel.
300
What is the definition of a Gas?
The state of matter in which its atoms are separate from each other by empty space.
300
What part of the atom is responsible for reactivity (chemical reactions)?
The electrons
300
Describe the particle motion of a gas.
Atoms or particles are spread apart, not touching, and move with high energy to fill the container they are in.
300
What happens to the energy in the Vaporization phase change?
Energy increases, changing the matter from a liquid into a gas.
400
What is the smallest unit of matter?
An atom.
400
What is the definition of a Phase Change?
When matter changes from one state (solid, liquid, gas) to another because of a change in energy.
400
What subatomic particle does NOT have a charge?
Neutrons
400
Which state of matter does this sentence describe?
"There is no pattern in the arrangement of particles of water."
A gas
400
What happens to the energy in the Freezing phase change?
Energy decreases and matter will change from a liquid to a solid.
500
What is the difference between Energy and Matter?
Matter is measured by mass and volume, but energy is not.
500
What is the definition of an Element and give three examples of an element?
A unique particle of matter that is a fundamental building block of matter. Examples can come from the periodic table.
500
How many protons are found in the center of this atom? 
Two protons
500
Which state of matter does this sentence describe?
"The water has no definite shape."
A liquid.
500
What phase change happens when Dry Ice (CO2) it dropped into a cup of water?
Sublimation (Solid to a Gas)