WorksheetsPeriodic Table
Total questions: 10
Worksheet time: 13mins
A collection of atoms of one type that cannot be broken down into simpler substances by ordinary chemical or physical means
element
subatomic particle
electron
matter
A negatively charged subatomic particle that orbits the nucleus of an atom
proton
neutron
electron
matter
One or two letters that represent the name of an element
element name
atomic symbol
atomic number
atomic mass
A unique number for each element that equals the number of protons in an atom of that element
element name
element symbol
atomic number
atomic mass
The mass of an atom, calculated by adding the number of protons and neutrons in the nucleus of the atom
element name
element symbol
atomic number
atomic mass
A grouping of elements based on similar properties arranged vertically in the periodic table; each element in each column contains the same number of valence electrons.
group
period
row
isotope
A horizontal grouping on the Periodic Table of Elements. Each element in each row has the same number of energy shells.
family
period
row
isotope
How many protons does potassium have?
39.0983
19
20
10
What element is in period 6 and group 14?
Ar (Argon)
O (Oxygen)
Pb (Lead)
Fe (Iron)
Potassium is in group 1 and period 4. How many valence electrons does it have?
1
4
5
3
