Periodic Table of Elements

What are the vertical columns on the periodic called?

• groups

• periods

• nonmetals

• metals

• metalloids

The Modern Periodic Table of Elements is arranged by

• atomic mass
• atomic number
• valence electrons
• number of isotopes

What does the 6 represent?

• atomic mass
• atomic number
• element name
• chemical symbol 

Tags

NGSS.MS-PS1-1

Name group 1A on the periodic table.

• alkali metals
• alkaline earth metals
• noble gases
  noble gases
• halogens

Name group 8A on the periodic table.

• alkali metals
• alkaline earth metals
• transition metals
• noble gases

The periodic table is organized in horizontal rows called...

• Groups

• Periods

• Families

• Chemical Symbols

Name this group: These metals are the most reactive.

• 
• 
• 
• 

A scientist creates a hypothesis, but the data she collects fail to support that hypothesis. The scientist should then

• change the data to support the hypothesis.

• change the hypothesis to match the results.

• forget the whole idea and walk away.

• use the data to develop and test a new hypothesis.

The chemical symbol in this element box is

• 26

• Fe

• Iron

• 55.845

Tags

NGSS.MS-PS1-1

What does the 1.00794 stand for?

• Hydrogen
• atomic number
• atomic mass
• atomic explosion

Tags

NGSS.MS-PS1-1