Unit Honors Chemistry

How many electrons should Oxygen have around its Lewis dot model?

• 5
• 6
• 7
• 8

Three pairs of electrons are shared in a

• Single bond
• Double bond
• Triple bond

tetra

• six

• Four

• Five

• seven

Which of the following is the correct Lewis structure for the compound PBr₃?

• structure A
• structure B
• structure C
• structure D

Tags

NGSS.MS-PS1-1

In CO₂, how many UNSHARED pairs of electrons does each oxygen have?

• 2
• 1
• 4
• 6

Tags

NGSS.MS-PS1-1

How strongly an atom attracts electrons is called....................

• Ionization energy
• Electronegativity
• Electricity
• Nuclear force

Tags

NGSS.MS-PS2-3

How did Mendeleev arrange the elements?

• alphabetical 
• density
• melting point
• atomic mass

The horizontal row on the periodic table is called a

• group
• family
• period
• atomic number

A vertical column is called...

• group
• tower
• period
• crew

The number at the bottom of each square on the periodic table is the ...

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

Tags

NGSS.MS-PS1-1