Properties of Water

SC.912.L.18.12 Discuss the special properties of water that

contribute to Earth’s sustainability as an environment for life:

cohesive behavior, ability to moderate temperature, expansion

upon freezing, and versatility as a solvent.

1. Students will explain the properties of

water at a conceptual level.

Hydrogen Bonding: involve a weak interacting where a hydrogen atom bonds with an oxygen atom

Because of hydrogen bonding, water is a polar molecule.

Polarity: the positive (oxygen end) attracts the negative (hydrogen end) of a nearby water molecule

1. Students will explain the properties of

water at a conceptual level.

Cohesion: the hydrogen bonds create

surface tension on the water

This allows water droplets to form and

insects and leaves to rest on the surface of

the water.

1. Students will explain the properties of

water at a conceptual level.

Temperature Moderation: water has the ability to heat up and

cool down slowly because it takes a lot of energy to do so.

This is why the water is cooler than the sand on a hot day at

the beach.

1. Students will explain the properties of

water at a conceptual level.

Expansion Upon Freezing: as water goes from liquid to solid, it become more dense,the molecules form a crystalline structure when they freeze

This is why ice floats in water!

1. Students will explain the properties of

water at a conceptual level.

Universal Solvent: many substances are able to dissolve in

water due to its structure

2. Students will explain how the properties

make water essential for life on Earth.

Think! How do these properties of water allow life on Earth to

be possible?

Record in your notebook and be ready to share out!

Scientific Method

SC.912.N.1.1

1. Student will design and/or evaluate a

scientific investigation using evidence of

scientific thinking and/or problem solving.