Pre-Test
Ions
Subatomic
Numbers
History of the Atom
100

This is the smallest part of an element.

What is an atom?

100

An atom with a positive or negative charge

What is an ion?

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

I introduced the term atomos to describe matter

Who is Democritus?

200
Neutrons are located outside of the nucleus. True or False?
False!
200

The valency of oxygen

What is -2?

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

I discovered that electrons circulate the nucleus in rings

Who is Bohr?

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

When an atom gains an electron it has this kind of electrical charge.

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

I discovered that a nucleus was in the centre of an atom?

Who is Rutherford?

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

What ion is formed when you mix oxygen and calcium together

What is Calcium oxide?

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

I discovered the plum pudding model

Who is JJ Thomson?

500
This is the smallest subatomic particle.
What is an electron?
500

The ionic formula of Magnesium oxide

What is MgO?

500

A particle with equal charge

What is an atom?

500

Mass number - atomic number = ______

What is the numer of neutrons?

500

The name of the model we use in our chemistry classes when drawing atoms

What is Bohr's Model?

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