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Location and Size
Charges
Subatomic
Numbers
Modern Theory
100
This is the smallest part of an element.
What is an atom?
100
Objects with the same charge do this when they come close to each other.
What is repel?
100

Three subatomic particles.

What are protons, neutrons, and electrons?

100
The sum of protons and neutrons in the nucleus of an atom.
What is mass number?
100

How many neutrons are in Silver?

61

200
Neutrons are located outside of the nucleus. True or False?
False!
200
Objects with different charges do this when they come close to each other.
What is attract?
200
Located outside of the nucleus and have a negative charge.
What are electrons?
200
The number of protons in an atom of a certain element.
What is atomic number?
200

59 protons

What is Praseodymium?

300
Electrons are located outside of the nucleus. True or False?
True!
300

Overall charge of the electron cloud

What is negative?

300
Located inside of the nucleus and have a positive charge.
What are protons?
300
The atomic number of Oxygen.
What is 8?
300

67 Electrons

What is Holmium?

400
Protons and neutrons are about the same size. True or False?
True!
400

If protons and electrons equal the atom is ________

What is neutral?

400
Atoms of different elements have different numbers of these.
What are protons?
400
The mass number of Potassium.
What is 39.098?
400

The region of space around the nucleus where an electron is likely to be found.

What is an orbital? or Energy Level? or Energy shell?

500
This is the smallest subatomic particle.
What is an electron?
500
An atom that is neither positively or negatively charged.
What is neutral?
500

84 protons

What is Polonium

500
Mass number - atomic number = ______ __ ________.
What is the numer of neutrons?
500

104 Protons

What is Rutherforidium