Periodic Table
The Atom
Element Identification
Element Identification 2
Groups/Families
100

What number tells you the number of protons and electrons (in a neutrally charged atom)?

Atomic Number

100

What is positively charged center of the atom called?

Nucleus

100
What is the name of element number 1?
Hydrogen
100
What element has the symbol Xe?
Xenon
100

What is the name for the group 2 metals?

Alkaline Earth Metals
200

How do you calculate the number of neutrons?

Subtract the atomic number from the mass number (rounded atomic #).

200
What particle has a positive charge?
Proton
200
What element has an atomic mass of 238.
U, Uranium
200
What element has 17 electrons?
Chlorine
200

Group 18 is known as the _____ gases.

Noble

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
What is the name of the element with the elemental symbol Zr?
Zirconium
300
What element's symbol is K?
Potassium
300

How many valence electrons does Chlorine have?

7

400

How many elements on the periodic table are liquid at room temperature?


(bonus: Name them)

2


Mercury and Bromine


400
What particle has a negative charge?
Electron
400
Which element has 42 as its atomic number?
Mo, Molybdenum
400
What element is a gas with 22 neutrons?
Argon
400

Groups 3-12 make up the ____________ metals.

Transition

500

What are valence electrons, and how are they different from other electrons?

They are the electrons in the outermost shell, and they're responsible for how an element reacts.
500
What subatomic particle is not inside the nucleus?
Electrons
500

What element has the elemental symbol Y?

Yttrium

500

What Alkali metal is named after a country?

Fr - Francium

500

Which group contains the most reactive metals?

 (bonus: why is this group the most reactive?)

Alkali Metals


(These metals have only one valence electron and desperately want to lose that electron)

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