Properties of Water and Solutions

A paperclip floating on water is an example of what property of water?

• capillary action

• surface tension

• universal solvent

• specific heat index

Water drops being attracted to each other is an example of ____________.

• capillary action

• adhesion

• specific heat index

• cohesion

What two elements make up water?

• Helium and oxygen

• Hydrogen and oxygen

• helium and carbon

• oxygen and carbon

Which property of water is most responsible for plants being able to transport water from their roots to their leaves?

• The attraction between molecules

• A capacity to dissolve many substances

• The ability to form a low-density crystalline structure when frozen

• A capacity to absorb large amounts of energy as temperature increases

The opening of the stomata allows water to evaporate from inside the leaf in a process known as transpiration. As this occurs, water molecules cling to one another and pull water in a continuous stream up the stem of the plant from the roots to the leaves. Which property of water makes the movement of water possible from the roots to the leaves of a plant?

• Cohesion

• Freezing point

• High specific heat

• Temperature-dependent density

Tags

NGSS.MS-ESS2-4

Use the illustration to answer the following question.

Which of the following is a property of water that allows a water strider to walk on the surface of water?

• Solubility

• Cohesion

• High specific heat

• Low freezing point

Water is the most abundant molecule found in living organisms. Most mammals, in fact, are approximately 70% water by weight. About two-thirds of this water is present inside cells. The other one-third is present outside cells (e.g., in blood plasma or other body fluids). Why is water so important to cells?

• Almost all the chemical reactions in life processes occur in solutions with water.

• Water determines which proteins are translated from the cellular DNA.

• Water is stored in the cells to be used when the organism gets thirsty.

• The main structural component found in plasma membranes and cell walls is water.

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

The freezing point of water is 0°C, and the boiling point is 100°C. This range of temperatures can be found naturally on the Earth, which means that___.

• water makes up less than 30% of the Earth's surface

• water has a very low specific heat

• water can exist in all three states on Earth

• water cannot move through the roots of plants

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

Molecule that has regions of opposite partial charge.

• Carbon dioxide

• Polar molecule

• ionic compound

• opposite molecule

Tags

NGSS.MS-PS2-3

Which characteristic of water molecules makes water a good solvent?

• Mass

• Polarity

• Potential Energy

• Chemical Energy