Covalent Bonding

What two types of atoms make a covalent bond?

• 2 nonmetals

• a metal and a nonmetal

• 2 metals

• 2 noble gases

How are covalent bonds explained?

• When one atom takes the other atom's electron

• When an atom shares an electron with another atom

• When two nuclei merge

• when an atom transfers an electron to another atom

What is it called if three pairs of electrons are being shared?

• Triple bond

• Bond length

• Tribond

• tri-ionic bond

Which of the following is the correct Lewis dot structure for the molecule fluorine (F₂)?

• A
• B
• C
• D

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NGSS.HS-PS1-1

Which element below is not diatomic? hint: (Have no fear of ice cold beverages)

• hydrogen

• oxygen

• nitrogen

• sulfur

Atoms form bonds with other atoms in order to become more ______.

• stable

• happy

• dense

• energetic

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Atoms become more stable when

• their valence electron shell is full.

• their valence electron shell is empty.

• they have fewer neutrons.

• they have a complete proton octet.

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Which of the following compounds would have covalent bonds?

• PBr₃

• KCl

• CaO

• NaCl

Which of these would be covalently bonded?

• Fr and K

• Sc and O

• F and Cl

• He and Pt

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NGSS.HS-PS1-1

Oxygen in the air that we breathe is a molecule of two oxygen atoms held together by a double bond (O₂).

How many electrons are being shared between the two atoms?

• 4

• 2

• 12

• 8

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