Atoms & Periodic Table Review

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

Tags

NGSS.MS-PS1-1

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

Tags

NGSS.MS-PS1-1

Subatomic particle with a charge of 0

• neutron
• proton
• electron
• quark

The nucleus of an atom is made of

• electrons and protons
• electrons and neutrons
• protons and neutrons
• empty space

Tags

NGSS.MS-PS1-1

Outside the nucleus of an atom are these

• protons
• neutrons
• quarks
• electrons

The best images of atoms look fuzzy because of their 

• small size 
• constant motion
• fast-moving electrons
• thunder and lightning