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

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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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Covalent bonds are between...

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

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NGSS.MS-PS1-1

Ionic bonds are between...

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

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NGSS.HS-PS1-2

Atoms are most stable when their outer shell is complete.

• true
• false

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NGSS.HS-PS1-1

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How are covalent bonds formed?

• Sharing of electrons
• Transfer of electrons

How are ionic bonds formed?

• Transfer of electrons
• Sharing of electrons

Why do elements bond?

• To be friends
• To create a new element
• To become stable

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NGSS.HS-PS1-2

What is a valence electron?

• The sum of neutrons and protons.
• The # of electrons in the last shell.
• A type of bond.
• A popular compound.

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Where are the nonmetals located on the periodic table? 

• Blue
• Red
• Green

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NGSS.HS-PS1-1