Periodic table

How many different elements are in this chemical formula: C₂H₂ClK₃

• 6
• 8
• 2
• 4

Tags

NGSS.MS-PS1-1

What is water?

• element
• compound
• mixture

Tags

NGSS.MS-PS1-1

Sodium (Na) is found in period 

• 3
• 2
• 4
• 1

Tags

NGSS.HS-PS1-1

Sodium (Na) is found in group 

• 1
• 2
• 3
• 4

Tags

NGSS.HS-PS1-1

In the modern periodic table elements are arranged by:

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

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many elements are in the Noble Gas family?

• 24
• 13
• 6
• 18

Tags

NGSS.HS-PS1-1

Which of these is not a noble gas?

• Helium
• Argon
• Nitrogen
• Krypton

Tags

NGSS.HS-PS1-1

True or false: Noble gases react with water

• True
• False

Tags

NGSS.MS-PS1-2

Name the group that contains inert (nonreactive) elements.

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

Tags

NGSS.HS-PS1-1

Which of the following elements is located in the same period of silicon ₁₄Si

• ₁₁Na

• ₂₁Sc

• ₃₈Sr

• ₃₂Ge