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Periodic Table
Atoms
Element Identification
Element Identification 2
Groups and Periods
100

What number tells you the number of protons (and electrons)?

Atomic Number

100

What is the 'brain' of the atom?

Nucleus

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

How many groups make up the periodic table and what is the other name for groups?

18, families

200

Who created the periodic table?

Mendeleev 

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
Where are the most reactive elements? Where are the least reactive elements?

Elements on the left side of the table are most reactive (Alkali metals), elements on the right side are least reactive (Nobel gasses).

300

How are elements on the periodic table arranged?

by increasing atomic number

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

What are the elements in group 2 known as?

Alkaline earth metals

400
How do you find an element's atomic mass?
Add the number of neutrons and the number of protons together
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

What are the elements in group 7A or 17 called?

Halogen gasses

500

What does not always match the elements name? Why?

The element symbol, the element symbol matches the Latin name of the element.

500

What subatomic particle is not inside the nucleus? Where is it located?

Electrons, orbiting the nucleus

500

What element is located in period three, is highly reactive and part of an everyday used compound? Name the element and compound.

Sodium, salt

500

What element is a solid, a metal and named after a state? What is its atomic number.

Californium, 98

500

Why are the two rows set below the periodic table, what are the names of the two rows, and what name are they given together?

They are at the bottom so the periodic table fits together on a page, the are the lanthanides and actinides, they are called the Rare Earth Metals