Periodic Table
Periodic Trends
Element Identification
Element Identification 2
Electrons and Reactivity
100
What number tells you the number of protons and electrons?
Atomic Number
100

What is the center of the atom called?

Nucleus

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

What is the only Noble Gas that does not have 8 valence electrons?

Helium

100
How many electrons fit on the first energy level?
2
200

How do you figure out the number of neutrons?

atomic mass - atomic number

200
What particle has a positive charge?
Proton
200

What element has an atomic mass of 16?

Oxygen

200
What element has 17 electrons?
Chlorine
200
How many electrons fit on the third energy level?
18
300

How do you find an element's atomic mass?

Protons + Neutrons

300
What particle has no charge?
Neutron
300

What is the name of the element 27 protons in its nucleus?

Cobalt

300
What element's symbol is K?
Potassium
300

Which 2 metalloids have 4 energy levels?

Germanium (Ge) and Arsenic (As)

400
How many liquids are on the periodic table?
2
400
What particle has a negative charge?
Electron
400

Which element is the only metalloid in Group 13?

Boron

400

Which element forms a -1 charge and has 4 energy levels?

Bromine

400

What is the most reactive Halogen?

Fluorine

500

What does the term 'valence electrons' mean?

number of electrons on outermost energy level

500

What subatomic particle is not inside the nucleus?

Electron

500

What Alkali-Earth metal has 2 valence electrons?

Beryllium

500

What are the only 2 elements that are liquid at room temperature?

Mercury (Hg) and Bromine (Br)

500

What are the only two elements that touch the staircase, but are not metalloids?

Aluminum (Al) and Polonium (Po)

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