Chemical Bonding & Reactions

How many single bonds will carbon look to make when it bonds covalently?

• 2

• 3

• 4

• 5

Tags

NGSS.HS-LS1-6

Which of the following elements does NOT form an ion with a charge of 2+?

• Beryllium

• Strontium

• Magnesium

• fluorine

Tags

NGSS.HS-PS1-1

When Alkali metals (Group 1) form ions, they ____.

• lose 1 proton

• gain 1 proton

• lose 1 electron

• gain 1 electron

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How does fluorine (F) obey the octet rule when reacting to form compounds?

• It doesn’t change its number of electrons

• Fluorine does not obey the octet rule.

• It gains electrons.

• It gives up electrons.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following pairs of elements is most likely to form an ionic compound?

• magnesium and fluorine

• manganese and iron

• oxygen and chlorine

• sodium and aluminum

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following shows correctly an ion pair and the ionic compound the two ions form?

• Sn⁴⁺ and N^3- form Sn₄N₃

• Cu²⁺ and O²- form Cu₂O₂

• Cr³⁺ and I- form CrI

• Cr²⁺ and I^- form CrI₂

Tags

NGSS.HS-PS1-1

How many valence electrons are transferred from the sodium atom to fluoride in the formation of the compound sodium fluoride?

• 0

• 1

• 2

• 3

Tags

NGSS.HS-PS1-2

What is the chemical formula of sodium nitride?

• NaN

• Na₂N

• Na₃N

• NaN₃

What is the balanced chemical formula of iron (II) oxide?

• FeO

• FeO₂

• Fe₂O₂

• Fe₂O

Select the correct formula for boron trichloride.

• B₂Cl

• B₃Cl

• BCl₃

• BCl₂

Tags

NGSS.HS-PS1-1