Molecular Structure

The image to the left is a water molecule. The spheres in this image represent (a)   .

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NGSS.MS-PS1-1

The image to the left is a water molecule. The sticks in this image represent (a)   .

Tags

NGSS.MS-PS1-1

Which of the following would be modeled by small particles made up of atoms of two kinds of elements?

• Gold

• Oxygen

• Neon

• Water

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NGSS.MS-PS1-1

Why does oil not dissolve in water?

• Oil is an extended structure, and water is made of polar molecules.

• Oil is an extended structure, and water is made of nonpolar molecules.

• Oil is made of nonpolar molecules, and water is made of polar molecules.

• Oil is made of polar molecules, and water is made of nonpolar molecules.

What is a diatomic molecule?

• A single atom by itself.

• A molecule made of two atoms that are the same.

• Diatomic molecules do not exist.

Tags

NGSS.MS-PS1-1

A polar bond is where electrons are shared unequally, so a nonpolar bond must be where electrons are

• not shared at all

• shared equally

• shared unequally

True or False

"Like dissolves like"- Polar dissolves polar, Nonpolar dissolves nonpolar.

• True

• False

According to VSEPR, molecules adjust their shapes to keep which of the following as far away as possible?

• Pairs of valence electrons

• Inner shell electrons

• Mobile Electrons

• Electrons closest to the nucleus

Which of the following molecules has a linear molecular structure?

• Water (H2O)

• Carbon Dioxide (CO2)

• Ammonia (NH3)

• Methane (CH4)

What type of bond is formed when atoms share electrons equally?

• Ionic bond

• Polar covalent bond

• Nonpolar covalent bond

• Hydrogen bond