Show:
Periodic Table
Element Identification
Element Identification 2
Periodic Trends
Electron Configuration
100
What number tells you the number of protons and electrons?
Atomic Number
100
What is the name of element number 1?
Hydrogen
100

I am used in balloons because I’m lighter than air and non-flammable.

He - Helium

100
What is the 'brain' of the atom?
Nucleus
100
How many electrons fit on the first energy level?
2
200
How do you figure out the number of neutrons?
Subtract the atomic number from the atomic mass
200
What element has an atomic mass of 238.
U, Uranium
200
What element has 17 electrons?
Chlorine
200
What particle has a positive charge?
Proton
200
How many electrons fit on the third energy level?
18
300
How do you find an element's atomic mass?
Add the number of neutrons and the number of protons together
300

a metal that rusts when exposed to oxygen and water.

Fe - Iron

300
What element's symbol is K?
Potassium
300
What particle has no charge?
Neutron
300
Figure out the number of electrons on each energy level for NEON
2) 8)
400
How many liquids are on the periodic table?
2
400

I am used in toothpaste to strengthen teeth and prevent cavities.

F - Fluorine  

400
What element is a gas with 22 neutrons?
Argon
400
What particle has a negative charge?
Electron
400
Figure out the number of electrons for each level for IRON
2) 8) 16)
500
What does the term 'valence electrons' mean? (2 things)
number of electrons on outermost shell, tells how reactive an element is
500

I am a shiny, gold-like metal used in jewelry but my symbol is Au

Au - Gold


500
What element is a sold named after a state with 253 neutrons?
Californium
500
What subatomic particle is not inside the nucleus?
Electrons
500
What is an electron cloud model?
The electrons around the nucleus spinning so fast it looks like a cloud