Chemistry of Life

Why can fish survive winters in a pond?

• ice is less dense than liquid water so it will be on the top of a lake or pond allowing fish to swim beneath it

• water is available in all 3 phases so ice will be on the top of a lake or pond allowing fish to swim beneath it

• water is polar so ice will be on the top of a lake or pond allowing fish to swim beneath it

• Adhesion so ice will be on the top of a lake or pond allowing fish to swim beneath it

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NGSS.MS-PS1-4

Water has a high specific heat which means it can hold a great deal of thermal energy without rapidly increasing in temperature. What will this affect?

• Cities that are close to Oceans and large lakes

• Cities that are near ponds or rivers

• Deserts far from oceans

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NGSS.HS-ESS2-5

Why is water so good at dissolving so many substances?

• it is polar

• it is less dense as a solid

• cohesion

• adhesion

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NGSS.HS-ESS2-5

Water has a slightly positive end AND a slightly negative end, this means water has

• polarity

• cohesion

• adhesion

• specific heat

Water can hold a great deal of heat and help moderate the climate of a nearby landmass because of which property?

• specific heat (high heat capacity)

• cohesion

• adhesion

• polarity

Paper clips are able to float on water because of ....

• adhesion
• capillary action
• surface tension
• universal solvent

Surface tension is caused by ...

• strong cohesion between water molecules
• strong adhesion between the water molecules
• condensation
• water cycle

Attractions between water molecules are called

• Covalent bonds
• Ionic bonds
• Polar bonds
• Hydrogen bonds

Why does water move from the roots to the leaves of plants?

• Water is pushed by solutes
• Capillary action pulls the water molecules like a chain
• Water is pulled by gravity
• Water’s cohesion causes it to “pull” towards the leaves

Describe COHESION.

• Water molecules attracted to other substances.

• Water molecules climbing upwards against the force of gravity.

• Water molecules dissolving many substances because of its polarity.

• Water molecules attracted to other water molecules.