Chemical Bonding and Shapes LC1 COL

Magnesium bromide is an ionic compound with the chemical formula MgBr₂.  What does the "2" tell you?

• There are 2 bromide ions for every magnesium ion
• Bromide has a 2- charge
• Bromide has a 2+ charge
• There are 2 magnesium ions to every bromide ion

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NGSS.MS-PS1-1

An ionic bond is the attraction between:

• oppositely charged ions
• similarly charged ions
• neutral ions
• neutral atoms

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NGSS.HS-PS1-2

The ability of an atom in a molecule to attract electrons is best quantified by the ______.

• electronegativity

• paramagnetism

• diamagnetism

• electron change-to-mass ratio

• first ionization energy

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Valence electrons are involved in the formation of a chemical bond

• True

• False

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Chemical bond formed from the electrostatic attraction between positive and negative ions

• covalent bond

• ionic bond

• metallic bond

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NGSS.HS-PS1-3

When 2 atoms share electrons

• Ionic bond

• covalent bond

• metallic bond

Which of the following is NOT an example of a molecular formula?

• H₂O

• B

• NH₃

• O₂

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NGSS.MS-PS1-1

Use VSEPR theory to predict the shape of the hydrogen chloride molecule, HCl.

• tetrahedral

• linear

• bent

• trigonal planar

Which of the following is an example of an IONIC COMPOUND?

• NaCl
• H₂O
• CO₂
• NO

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NGSS.HS-PS1-2

Which of the following is a characteristic property of ionic compounds?

• They form hard, brittle crystals with characteristic shapes
• They have low melting points
• They have low boiling points
• They contain no charged particles

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NGSS.HS-PS1-3