Ionic and Covalent Bonds

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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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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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

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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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Ionic Bonds

• metal with nonmetal

• nonmetal with nonmetal

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Covalent bonds are between...

• Metal and Non-metal
• Non-metal and Non-metal
• Metal and Metal

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How are ionic bonds formed?

• Transfer of electrons
• Sharing of electrons

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What is the charge on a Hydrogen ion?

• +1
• 1
• 2

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What kind of bond will form between Hydrogen and Oxygen?

• ionic

• covalent

• metallic

• no bond

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Atoms are most stable when their outer shell is complete.

• true
• false

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