Chemistry of Water

In a water molecule,

• Oxygen pulls electrons towards itself

• Hydrogen pulls electrons towards itself

• Oxygen is slightly positive

• Hydrogen is slightly negative

A molecule with unevenly distributed charges has

• full charge

• ions

• polarity

• magnetism

The attraction between a hydrogen atom with a partial positive charge and another atom with a partial negative charge is called a

• polar bond

• ionic bond

• covalent bond

• hydrogen bond

What accounts for many of water's special properties?

• It's covalent bonds

• It's multiple hydrogen bonds

• It's nonpolarity

• The oxygen atom

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Why can water form so many hydrogen bonds?

• Its polarity

• It's ionic

• its pH

• its cohesion

attraction between molecules of the same substance

• adhesion

• cohesion

• surface tension

• high heat capacity

Cohesion also produces

• surface tension

• insects and spiders to drown

• high heat capacity

• water to freeze

attraction between molecules of different substances

• adhesion

• cohesion

• polarity

• density

water rising in a narrow tube against

the force of gravity

• capillary action

• cohesion

• adherence

• meniscus

the amount of energy needed to raise the temperature by making its molecules move faster

• cohesion

• adhesion

• mixture

• Heat capacity

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NGSS.MS-PS1-4