subatomic particles
atomic models
periodic table
groups/families
Metals/no metals/Metalloids
100

It is the lightest of the three with a negative charge.

What is an electron

100

He coined the word atom

Democritus

100

The elements are arranged on the periodic table in order of increasing...

What is atomic number

100

This group/family has the most reactive metals.

What are Alkali Metals

100

These can conduct electricity and heat

What are metals

200

It is found in the nucleus and has no charge

What is the neutron

200

In this model, scientists know the probability of find electrons around the nucleus.

What is the electron cloud model
200

The horizontal rows tell you this about the element.

What is the number of energy levels

200

This group/family has 2 valence electrons in its outer most energy level

What are Alkaline Earth Metals

200

These are brittle when in solid form

What are nonmetals

300

The atomic number is equal to the number of these

What are protons

300

He said the atom was an invisible, indestructible sphere

Who is John Dalton
300

The abbreviation of the element is called this

What is the symbol

300

Copper is in this group.

What are Transitional metals

300

These are semi-conductors

What are metalloids

400

The mass number equals the sum of these

What are the protons and neutrons

400

He discovered the electron using the cathode ray tube.

J.J. Thomson

400

The vertical columns tell you what about the element

What is the number of valence electrons

400

This family/group has the most inactive elements

What are Noble gases

400

Most of these are gases at room temperature.

What are nonmetals.

500

When you change the number of these particles you get an isotope

What are neutrons

500

He proposed the planetary model, saying that electrons are in specific energy levels with specific energy values.

Who is Niehls Bohr

500

This number cannot be found on the periodic table

What is the mass number

500

The reason elements react with each other.

What is to become like Noble gases.

500

These hold valence electrons loosely.

What are metals.

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