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Subatomic Particles
The Periodic Table
The Electron
Regions of the Periodic Table
All About Numbers
100

How many subatomic particles are there in an atom?

Three (3)

100

Around what year was the first periodic table presented?

Around the 1800s
100

In what year was the idea of the electron cloud developed?

1926

100

The blue boxes on the periodic table in the book represent which type of elements?

Metals

100

How many periods are there on the periodic table?

Seven (7)

200

Which subatomic particle does not have a charge?

Neutron

200

Define atomic number

The number of protons in an atom's nucleus

200

How many energy levels are there in the electron cloud?

Seven (7)

200

The yellow boxes on the periodic table in the book represent which type of elements?

Nonmetals

200

How many groups are there on the periodic table?

Eighteen (18)

300

Which subatomic particle has a negative charge?

Electron

300

(True or False) The mass number of an atom is the sum of the number of protons and electrons in the nucleus of the atom.

False

300

From energy level 2 to energy level 7, how many electrons does it take for that energy level to become stable?

Eight (8)

300

(True or False) All metals on the periodic table are solids.

False

300

What is the atomic number for silver?

Forty-Seven (47) 

400

An __________ is the smallest particle of an element that retains the element's properties.

Atom

400

The vertical columns of the periodic table are called what?

Groups

400

Define electron dot diagram.

It consists of the chemical symbol of an element surrounded by dots to represent valence electrons.

400

What is so special about metalloids?

They exhibit properties of both metals and nonmetals.

400

What is the atomic number for sodium?

Eleven (11)

500

What are quarks?

The smaller particles that make up protons and neutrons.

500

The horizontal rows of the periodic table are called what?

Periods

500

What is the name for the electrons located in the outermost energy level in the electron cloud?

Valence electrons

500

Why are the noble gases called the noble gases?

They already have a complete outer shell of valence electrons and they do not want to bond with other elements very well.

500

How many total electrons are present in the electron cloud for tungsten?

Seventy-four (74)