Periodic Table
Periodic Trends
Elements
Name that
Just the facts
100
What number tells you the number of protons and electrons?
Atomic Number
100

What is the center of the atom?

Nucleus

100
What is the name of element number 1?
Hydrogen
100

What element has the symbol Ne?

Neon

100

Who invented the Periodic Table?

Dmitri Mendeleev

200
How do you figure out the number of neutrons?
Subtract the atomic number from the atomic mass
200
What particle has a positive charge?
Proton
200

What are the 3 main types of elements on the periodic table?

metals, nonmetals, metalloids

200

What element has the symbol Cl?

Chlorine

200

How many known elements are there?

118

300
How do you find an element's atomic mass?
Add the number of neutrons and the number of protons together
300
What particle has no charge?
Neutron
300

rows on the periodic table

periods

300
What element's symbol is K?
Potassium
300

What is the most abundant element in the universe?

Hydrogen (H)

400

What is the basic particle from which all elements are made?

atom

400
What particle has a negative charge?
Electron
400

What occupies most of the boxes on the periodic table?

metals

400

What is the chemical formula for water?

H2O

400

Elements in group 18; don't usually react with other elements

Noble gases

500

What is a compound?

A substance made of 2 or more elements that are chemically combined

500
What subatomic particle is not inside the nucleus?
Electrons
500

All atoms have the same number of protons and______.

electrons

500

What is CO2?

Carbon dioxide

500

What 3 key things are in an element's box on the periodic table?

atomic number, symbol, and atomic mass

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