Ionic and Covalent Bonds

Why do all bonds form?

• so the number of protons equals the number of electrons

• so an atom can become unstable

• to fill the outermost energy level

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Valence electrons are found

• in the innermost energy level of an atom

• in the middle energy levels of an atom

• in the outermost energy levels of an atom

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NGSS.HS-PS1-1

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An atom with 3 valence electrons "wants" a full shell, so it can either gain 5 or lose 3. Which is more likely to occur?

• Gain 5

• Lose 3

• Nothing

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Zinc fluoride

• ZnF₂

• Zn₂F

• ZnF

• Zn₂F₄

Tags

NGSS.MS-PS1-1

How many Aluminum atoms are in Al₂O₃?

• 3

• 5

• 2

• 1

Tags

NGSS.MS-PS1-1

When naming ionic compounds, the metal is always named first and the nonmetal is always named second.

• True

• False

Write the correct formula for Sodium Chloride.

• SC

• SCl

• NaCl

• NaCl₂

Tags

NGSS.MS-PS1-1

Mg₃N₂

• Magnesium nitride

• Magnesium (II) nitride

• Trimagnesium dinitrogen

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NGSS.MS-PS1-1

How do covalent bonds form?

• By donating and receiving valence electrons between atoms.

• Scientists still aren't sure.

• Opposite slight charges attract each atom in the compound.

• Sharing valence electrons between atoms

Tags

NGSS.MS-PS1-1

What two types of atoms make a covalent bond?

• 2 Nonmetals

• 1 Metal and 1 Nonmetal

• 2 Metals

• 2 Noble Gases

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NGSS.MS-PS1-1