These are the three subatomic particles of an atom
What are protons, neutrons and electrons?
Describe the motion of particles in a solid, liquid and gas
Solid - vibrate in place/tightly held together
Liquid - can slide past each other
Gas - move around freely
The periodic table is in order by increasing this
Atomic Number, Number of Protons
This type of matter is formed with two substances are chemically combined together; it's an example of a pure substance
What is a compound?
Groups = number of valence electrons
What is the difference between a physical and chemical property?
You can identify physical properties without changing the substance
How do you calculate the number of neutrons in an atom?
Mechanical = speed increases