9 weeks Assessment (Q2)

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from areas of high concentration to areas of low concentration, resulting in an even distribution of substances.

Front

What happens to a grape placed in a concentrated sugar solution?

Back

The grape will shrink because water leaves the grape due to osmosis.

Front

How many nitrogen atoms are in NH3?

Back

There is 1 nitrogen atom in NH3.

Front

What does it mean that matter cannot be created or destroyed during a chemical reaction?

Back

It means that the total mass of reactants equals the total mass of products; matter can only change forms.

Front

What is an isotonic solution?

Back

An isotonic solution is one that has the same concentration of solutes as another solution, resulting in no net movement of water.

Front

What is osmosis?

Back

Osmosis is the movement of water molecules through a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is a hypertonic solution?

Back

A hypertonic solution has a higher concentration of solutes compared to another solution, causing cells to lose water and shrink.

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes compared to another solution, causing cells to gain water and swell.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass cannot be created or destroyed in a chemical reaction.

Front

What is the difference between active transport and passive transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not require energy.