Water Properties

What makes water essential for life?

• Its ability to exist in three states of matter naturally on Earth.

• Its color and taste.

• Its ability to flow uphill.

• Its availability in the universe.

Why is the discovery of water in space exciting for scientists?

• It can be used for space agriculture.

• It means water is unique to Earth.

• It indicates potential for hydroelectric power.

• It suggests the presence of life.

What type of bond is formed between two water molecules?

• Covalent bond

• Hydrogen bond

• Ionic bond

• Metallic bond

What property of water allows insects to walk on its surface?

• Adhesion

• Capillary action

• Cohesion

• Surface tension

What is capillary action?

• The evaporation of water.

• The freezing process of water.

• The process of water boiling.

• The movement of water through a narrow space against gravity.

Why is water considered an excellent solvent?

• It can dissolve more substances than any other liquid.

• It is colorless.

• It is non-polar.

• It has a low boiling point.

What was Henry Cavendish's contribution to science?

• He created the first synthetic element.

• He was the first to recognize hydrogen gas as a distinct substance.

• He invented the first microscope.

• He discovered the law of gravity.

What does it mean when a substance is hydrophilic?

• It repels water.

• It forms hydrogen bonds with oil.

• It is non-polar.

• It dissolves well in water.

What is the significance of water's high heat capacity?

• It allows water to regulate Earth's climate.

• It makes water boil faster.

• It makes water a poor solvent.

• It decreases water's surface tension.

What happens to water molecules as they freeze?

• They evaporate.

• They form ionic bonds.

• They form crystalline structures that are less dense than liquid water.

• They contract and become denser.