WorksheetsAtoms & Periodic Table Review
Total questions: 10
Worksheet time: 20mins
Vertical columns of elements that DO share chemical properties (react the same) because they have the same number of VALENCE ELECTRONS in their outer shells.
Groups
Periods
Horizontal rows of elements that share the same number of ENERGY LEVELS but DO NOT share chemical properties.
Groups
Periods
The periodic table is arranged by increasing ______ ______, which is equal to the number of protons.
atomic mass
atomic number
If an element is shiny, can be hammered into thin sheets, and is a good conductor of electricity, what type of element is it? (6.6A)
a metal
a metalloid
a non-metal
a gas
Determine the number of neutrons in an atom of Carbon (round the mass number). (8.5B)
12
6
18
2
Look at this picture of Argon off the periodic table. Which of the following is true for this element?
18 protons
40 protons
22 protons
21.9 protons
