Azsci Review Questions

This could be the dot diagram of

• Mg

• Cl

• C

• O

Tags

NGSS.MS-PS1-1

This is a correct dot diagram for nitrogen (N)

• true

• false

Tags

NGSS.MS-PS1-1

This is a correct dot diagram for neon (Ne)

• true

• false

Tags

NGSS.MS-PS1-1

What are valence electrons?

• The total number of electrons in an atom

• The number of electrons in the outermost shell

• The number of electrons in the second shell

• The number of protons in the outermost shell

What are the elements (Be, Mg, Ca,...) in Group 2 called?

• Alkali metals

• Alkaline earth metals

• Halogens

• Noble Gases

This could be the dot diagram of

• P
• Ar
• Na
• B

Tags

NGSS.MS-PS1-1

Most elements will gain or lose electrons so that they end up with _______ valence electrons.

• 2
• 6
• 8
• 10

How do positive ions form?

• by gaining electrons
• getting compliments
• by losing electrons
• gaining more protons

This could be the dot diagram of 

• Ne
• Si
• Al
• Be

Tags

NGSS.MS-PS1-1

Which statement about electron configurations is correct?

• Na = {2,8,1}

• Na+ = {2,8}

• Ne = {2,8}

• all the above