NYS Diffusion Lab

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules through a semi-permeable membrane from an area of high concentration to an area of low concentration.

Tags

NGSS.MS-LS1-2

Front

Which indicator changes color in the presence of glucose?

Back

The glucose indicator, also known as Benedict's solution, changes color in the presence of glucose.

Tags

NGSS.MS-PS1-2

Front

What does starch turn in the presence of a starch indicator?

Back

Starch turns blue-black in the presence of a starch indicator.

Front

What process does the dialysis tubing experiment demonstrate?

Back

The dialysis tubing experiment demonstrates the process of diffusion.

Front

What happens to the contents of the dialysis tube containing starch solution after 20 minutes?

Back

The contents of the dialysis tube turn purple-black.

Front

Which indicator tests for the presence of starch?

Back

Iodine is the indicator that tests for the presence of starch.

Front

Define diffusion.

Back

Diffusion is the movement of molecules from an area of high concentration to an area of low concentration.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Front

What is a semi-permeable membrane?

Back

A semi-permeable membrane is a barrier that allows certain molecules to pass through while blocking others.

Front

What is the role of indicators in diffusion experiments?

Back

Indicators are substances that change color in the presence of specific molecules, helping to visualize chemical reactions.

Front

Explain the difference between active transport and diffusion.

Back

Active transport requires energy to move molecules against their concentration gradient, while diffusion is a passive process that moves molecules down their concentration gradient.