The Periodic Table & Elements 2021

From this element key of Nitrogen, determine the atomic mass of nitrogen

• 7

• 7.01

• 14.01

• 21.01

Tags

NGSS.MS-PS1-1

Where are most metals on the periodic table?

• on the left side only

• on the right side only

• in the middle only

• on the left side and in the middle

Where are most nonmetals located on the periodic table?

• in the bottom row

• on the left side and in the middle

• on the right side

• in the top row

Which group of elements can act as semiconductors?

• halogens

• metalloids

• metals

• noble gases

The blue atoms are called 

• metals
• nonmetals
• metalloids
• noble gases

Each column in the periodic table is called a 

• period
• group
• cluster
• unit

The atomic number tells you what?

• number of electrons
• number of protons
• number of neutrons
• both electrons and protons in an atom.

Elements that are shiny and conduct electricity/heat are called --.

• metal

• nonmetal

• metalloid

• nonexistent

The atoms along the staircase are called 

• metals
• nonmetals
• metalloids
• noble gases

The order of elements in the periodic table is based on

• the number of protons in the nucleus.

• the electric charge of the nucleus.

• the number of neutrons in the nucleus.

• atomic mass.