Structure of Water

What is a water molecule composed of?

• 1 Hydrogen atom and 2 Oxygen atoms
• 2 Hydrogen atoms and 1 Oxygen atom
• 3 Oxygen atoms
• 2 Helium atoms and 1 Oxygen atom

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NGSS.MS-PS1-1

Which letter represents hydrogen?

• A
• B
• C
• D

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NGSS.5-PS1-1

NGSS.5-PS1-3

Which letter represents the negative end?

• A
• B
• C
• D

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NGSS.HS-PS2-5

NGSS.HS-PS2-4

Which letter represents the positive end?

• A
• B
• C
• D

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NGSS.HS-PS2-5

NGSS.HS-PS3-5

Because water has a positive and a negative end, and is attracted to other molecules it is called a ______ molecule.

• mickey mouse
• polar (tiny magnet)
• special
• miracle

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NGSS.HS-PS1-3

The property where water molecules are attracted to other water molecules.

• adhesion
• capillary action
• cohesion
• universal solvent

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NGSS.HS-ESS2-5

The property where water molecules are attracted to other types of molecules (surfaces).

• adhesion
• capillary action
• cohesion
• universal solvent

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NGSS.HS-ESS2-5

Why do water molecules attract each other?

• Their shape

• Polarity

• Electron pair attraction

• Molecular structure

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NGSS.HS-PS1-3

How many atoms does a water molecule contain?

• 2

• 3

• 4

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NGSS.MS-PS1-1

The oxygen atom, in addition to forming bonds with the hydrogen atoms, also carries two pairs of

• positive electrons

• molecules

• polarity

• unshared electrons

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NGSS.HS-LS1-6