Basic Knowledge
What does the atomic number represent?
The number of protons in an atom.
What is the brain of an atom?
The nucleus.
What element has an atomic number of 1?
Hydrogen.
What element has the symbol Cl?
Chlorine.
How many electrons fit in the first energy level?
2.
What are valence electrons?
The electrons in the most outer shell.
What particle has a positive charge?
A proton.
What element has 13 protons?
Aluminum.
What element has the symbol Mg have?
Magnesium.
How many electrons fit in the second and third electron shell?
8, 18.
How do you find atomic mass?
Add the protons and neutrons.
Which particle has a negative charge?
A electron.
What is the first element in group 16?
Oxygen.
What element has the symbol N?
Nitrogen.
How many electron shells does carbon require?
Two.
How do you find the amount of neutrons in an element?
Subtract the atomic number from the atomic mass.
Which particle has no charge?
Neutron.
What period and group is lithium in?
1, 1.
What element has the symbol K?
Potassium.
How many electron shells are there and how many can each level hold?
There are 4 levels. 2, 8, 18, 32.
What are the rows on a periodic table called? What are the columns called?
Periods, Groups.
Which particles out of the three are not in the nucleus?
The electrons.
How many protons does calcium have?
What element has the symbol S and how many protons does it have?
Sulfur, 16.
What is the electron cloud?
The circle outside on the nucleus where the electrons revolve.