Practice Quiz 1.1

What process is shown within this diagram?

• Natural selection

• Endosymbiosis

• Chemical evolution

• Abiogenesis

Tags

NGSS.MS-LS4-4

Solvent

• Homogeneous mixture formed when a substance is dissolved in another substance

• Substance in which another substance is dissolved

• Weak bond formed by the attraction of opposite charges between hydrogen and oxygen

• Substance dissolved in a solvent

Solute

• Homogeneous mixture formed when a substance is dissolved in another substance

• Substance in which another substance is dissolved

• Weak bond formed by the attraction of opposite charges between hydrogen and oxygen

• Substance dissolved in a solvent

Solution

• Homogeneous mixture formed when a substance is dissolved in another substance

• Substance in which another substance is dissolved

• Weak bond formed by the attraction of opposite charges between hydrogen and oxygen

• Substance dissolved in a solvent

Cohesion is the attraction of water molecules to each other while Adhesion is an attraction of water molecules to other substances.

• True

• False

Which of the following describes surface tension in water?

• Surface tension is the water molecules having a strong attraction to one another.

• Surface tension is caused by water molecules repelling one another.

• Surface tension allows water to support large and heavy objects if placed carefully on its surface.

• Surface tension of water is weak hydrogen bonds.

Water is able to travel against gravity, from the roots of a plant to the leaves at the top of the plant. Which of the following processes best explains this movement of water?

• Surface tension, when the adhesive forces are stronger than the cohesive forces.

• Capillary action, when adhesive forces are stronger than cohesive forces.

• Surface tension, which occurs when the cohesive forces are stronger than the adhesive forces.

• Capillary action, which occurs when the cohesive forces are stronger than the adhesive forces.

Tags

NGSS.MS-ESS2-4

Hydrogen Bond

• Homogeneous mixture formed when a substance is dissolved in another substance

• Substance in which another substance is dissolved

• Weak bond formed by the attraction of opposite charges between hydrogen and oxygen

• Substance dissolved in a solvent

As shown in the diagram, when environmental temperatures drop below freezing, a layer of ice typically forms on the surface of bodies of freshwater such as lakes and rivers. Which of the following best describes how the structure of ice benefits the organisms that live in the water below?

• The water molecules in ice are closer together than those in liquid water, so the ice prevents the passage of air to the water, maintaining a constant gas mixture in the water.

• The water molecules in ice are closer together than those in liquid water, so the ice forms a barrier that protects the organisms in the water from the freezing air temperatures.

• The water molecules in ice are farther apart than those in liquid water, so the ice floats, maintaining the warmer, denser water at the lake bottom.

• The water molecules in ice are farther apart than those in liquid water, so the ice floats, preventing the escape of gasses from the liquid water.

Tags

NGSS.MS-LS2-4

Which of the following is an example of Kool-Aid powder dissolving easily into water?

• High Specific Heat

• Density

• Universal Solvent

• Adhesion