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Periodic Table
Periodic Trends
Element Identification
Element Identification 2
Electron Configuration
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

What scientist is best known for organizing the periodic table?

Dmitri Mendeleev (must have last name for full credit)

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

How did Mendeleev organize the periodic table?

by atomic mass

300

How do you calculate an element's atomic mass?

Find the AVERAGE of the number of PROTONS and NEUTRONS

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 three major properties are used to organize the periodic table?

metals, metalloids, non-metals

400

What does the atomic mass represent?


The number of protons and neutrons in the nucleus


400

How many groups are on the periodic table?

18

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

How many liquids are on the periodic table?

3
500

What is a valence electron?

number of ELECTRONS on OUTERMOST SHELL

500
What subatomic particle is not inside the nucleus?
Electrons
500

What element has the elemental symbol Na?

Sodium
500

What is the atomic mass of Hydrogen?

1.008

500

How many electrons fit on the first energy level?

2