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Periodic Table
Periodic Trends
Element Identification
Element Identification 2
Element Identification 3
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

I am an the only metal that is a liquid at room temperature. I am toxic, but I used to be the liquid in thermometers. 

What is Mercury?

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 element has an atomic mass of 238.
U, Uranium
200
What element has 17 electrons?
Chlorine
200

I am a colourless, odourless nonreactive noble gas used in balloons.

What is helium?

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

I am an alakali earth metal found in many foods including milks and leafy green vegetables. 

What is calcium?

400

What state of matter are all Group 18 elements? 

Gas
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

I am a transition metal commonly used in jewelry with 118 neutrons.

What is gold? 

500

What does the term 'valence electrons' mean? 

number of electrons on outermost shell

500
What subatomic particle is not inside the nucleus?
Electrons
500
What element has the elemental symbol Yb?
Ytterbium
500
What element is a sold named after a state with 253 neutrons?
Californium
500

I am a gas from the halogen group. I am the most reactive element on the periodic table. 

What is fluorine?