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What Am I?
Atomic Parts
APE MAN
Periodic Pieces
It's Elementary
100
Has a positive charge.
What is a proton?
100
The two regions of the atom.
What are nucleus and electron cloud?
100

The APE in APE MAN stands for this rule. 

What is "Atomic # = Protons = Electrons"?

100
The number of periods in the Periodic Table.
What is seven?
100
My symbol is O and my atomic mass is 16.
What is oxygen?
200
I tell the number of protons contained inside an atom of an element.
What is the atomic number?
200
All of the mass of an atom is concentrated here.
What is the nucleus?
200

The MAN in APE MAN stands for this rule.

What is "Mass # - Atomic # = Neutrons"?

200
Rows in the Periodic Table.
What are periods.
200
I have 16 electrons whizzing through my electron cloud.
What is sulfur?
300
It takes 2000 of me to equal the mass of either of my subatomic partners.
What is an electron?
300
We live in the nucleus of an atom.
What are protons and neutrons?
300

A mystery element has a mass number of 52 and an atomic number of 28. How many protons does this element have?

What are 28 protons?

300
There are 18 of these in the Periodic Table.
What are groups or families?
300
With an atomic mass of 39 and 20 neutrons in my nucleus, I am a very reactive metal.
What is potassium?
400

I can be found by adding up the protons and neutrons together.

What is the atomic mass?

400
The two particles that are always found in the same number.
What are protons and electrons.
400

Chlorine has an atomic number of 17, and a mass number of 35. How many electrons does it have?

What are 17 electrons?

400

These materials (metals, nonmetals, metalloids) make up the majority of the Periodic Table.

What are metals?

400
I am the head of my family in the Halogens, and an important element in helping fight tooth decay.
What is flourine?
500

I'm the subatomic particle that always determines an element's identity

What is the proton?

500
The smallest subatomic particle, but its cloud accounts for the volume of an atom.
What is the electron?
500

Aluminum has an atomic number of 13 and an atomic mass of 26.982. How many neutrons does aluminum have?

What are 14 neutrons?

500

These materials (metals, nonmetals, metalloids) are located along the staircase on the Periodic Table. 

What are metalloids?

500
My properties are so unique I have my own separate space on the Periodic Table. I was also the end of the Hindenburg.
What is hydrogen?