States of Matter
What are the 3 states of matter?
Solid, liquid, and gas
What do we call the change from a solid to a liquid?
Melting
True or false: Matter always has mass.
True
What are the 3 main parts of an atom?
Proton, neutron, electron
What is the charge of a proton?
Positive
In which state of matter do particles move freely and spread far apart from one another?
Gas
What change of state is happening when it rains?
Condensation
Which of these is not matter: a rock, light, or water?
Light
Which part of an atom is found in the nucleus and has no charge?
Neutrons
What is the charge of an electron?
Negative
Which state of matter has a definite volume but NOT a definite shape?
Liquid
What is the change in state called when you ADD heat to water?
Evaporation
Give one example of something you can’t see that is still matter.
Air, oxygen, bacteria, etc.
Where are electrons located in an atom?
In rings on the outside
Why are atoms usually neutral in charge?
They usually have the same number of protons and electrons
Compare the movement of particles in a liquid to the movement of particles in a solid.
Atoms slide past each other in liquids. Atoms do not move in solids, but they can vibrate.
Does the process of deposition involve adding or removing heat?
Removing
Is the sun considered matter? Explain your answer.
The sun IS considered matter because it is made of plasma, but it produces light/heat which is not matter.
Where is most of the mass of an atom found?
Nucleus
What happens to the overall charge of an atom if it gains an extra electron?
It would have a -1 overall charge
Plasma is often called the “fourth state of matter.” How is plasma different than the 3 main states of matter?
Plasma has charged (positive/negative) high-energy particles
Dry ice skips the liquid phase and turns directly into a gas. What is this process called?
Sublimation
Give 3 examples of things that are NOT matter
Emotions, energy, light, heat, etc.
True or False: The number of protons and neutrons in an atom is always the same.
False
An atom has 25 neutrons, 24 protons, and 22 electrons. What is the charge of this atom?
+2