ATOMIC STRUCTURE

Pre-Test

100

This is the smallest part of an element.

What is an atom?

200

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

False!

300

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

True!

400

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

True!

500

This is the smallest subatomic particle.

What is an electron?

Ions

100

An atom with a positive or negative charge

What is an ion?

200

The valency of oxygen

What is -2?

300

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

What is negative?

400

What ion is formed when you mix oxygen and calcium together

What is Calcium oxide?

500

The ionic formula of Magnesium oxide

What is MgO?

Subatomic

100

Three subatomic particles.

What are protons, neutrons, and electrons?

200

Located outside of the nucleus and have a negative charge.

What are electrons?

300

Located inside of the nucleus and have a positive charge.

What are protons?

400

Atoms of different elements have different numbers of these.

What are protons?

500

A particle with equal charge

What is an atom?

Numbers

100

The sum of protons and neutrons in the nucleus of an atom.

What is mass number?

200

The number of protons in an atom of a certain element.

What is atomic number?

300

The atomic number of Oxygen.

What is 8?

400

The mass number of Potassium.

What is 39.098?

500

Mass number - atomic number = ______

What is the numer of neutrons?

History of the Atom

100

I introduced the term atomos to describe matter

Who is Democritus?

200

I discovered that electrons circulate the nucleus in rings

Who is Bohr?

300

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

Who is Rutherford?

400

I discovered the plum pudding model

Who is JJ Thomson?

500

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

What is Bohr's Model?