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Atoms
Forces
Protons
Neutrons
Electrons
100
What is the smallest unit that defines the chemical elements and their isotopes?
An atom.
100
What force attracts positive and negative charges?
The electric force.
100
What is the charge of a proton?
Positive
100
What is the charge of a neutron?
0 (none)
100
What is the charge of an electron?
Negative
200
What 3 sub-atomic particles are in an atom?
Protons, Neutrons, and Electrons.
200
What force keeps the nucleus together?
The nuclear force
200
Where can you find how many protons are in an element?
The atomic number
200
Where are neutrons located in an atom?
In the nucleus
200
How can you find the number of electrons?
The atomic number (same as protons)
300
What is in the middle of every atom?
The nucleus.
300
What is force measured in?
Newtons
300
Where are protons located in an atom?
In the nucleus
300
What do you subtract from the atomic mass number to get the number of neutrons?
The atomic number
300
Where are electrons located in an atom?
The electron cloud
400
Which sub-atomic particle differs in every isotope?
Neutrons
400
Which force can attract and repel?
Electromagnetic force
400
There can be more protons than nuetrons in the nucleus, true or false?
False
400
How many neutrons are in Neon-22
12
400
How many electrons can go on the third layer of an atom?
18
500
How much more massive is a proton than an electron?
About 2000 times more massive
500
What force is the sum of all the forces between two neighboring molecules?
The intermolecular force
500
How many protons are in Aluminum?
13
500
How is the mass of a neutron expressed?
Scientific notation
500
What particle family do electrons belong to?
The lepton family