STATE DIFFUSION LAB STATE DIFFUSION LAB Glucose Indicator

STATE DIFFUSION LAB

STATE DIFFUSION LAB Glucose Indicator BENEDICT’S SOLN: INDICATES (SHOWS YOU) THE SUBSTANCE IS PRESENT WHEN YOU SEE A CHANGE NEGATIVE NO CHANGE IN POSITIVE CHANGE IN COLOR ORANGE/ BROWN COLOR Lt. BLUE After heat

STATE DIFFUSION LAB Table Two Chemical Test Results Blue Colored Glucose Indicator ‘BENEDICT’S SOLN. ’ ADDED TO dist. WATER

STATE DIFFUSION LAB Blue Colored Glucose Indicator ‘BENEDICT’S SOLN. ’ ADDED TO STARCH

STATE DIFFUSION LAB Glucose Indicator ‘BENEDICT’S SOLN. ’ ADDED TO GLUCOSE

STATE DIFFUSION LAB Amber Colored Starch Indicator Solution ‘LUGOL’S IODINE’ INDICATES A STARCH IS PRESENT NEGATIVE NO CHANGE COLOR AMBER POSITIVE CHANGE COLOR BLUEBLACK

STATE DIFFUSION LAB Amber Colored Starch Indicator Solution ‘LUGOL’S IODINE’ INDICATES A STARCH IS PRESENT

STATE DIFFUSION LAB Amber Colored Starch Indicator Solution ‘LUGOL’S IODINE’ INDICATES A STARCH IS PRESENT

STATE DIFFUSION LAB Amber Colored Starch Indicator Solution ‘LUGOL’S IODINE’ INDICATES A STARCH IS PRESENT

STATE DIFFUSION LAB Glucose Indicator ‘BENEDICT’S SOLN. ’ ADDED TO STARCH & GLUCOSE After heat Answer the question at the bottom of the page – What would you need to do to make this experiment a controlled experiment? ? ?

STATE DIFFUSION LAB Glucose Indicator ‘BENEDICT’S SOLN. ’ ADDED TO STARCH & GLUCOSE After heat

STATE DIFFUSION LAB 9. What do you think will happen to the substances inside & outside the “cell”?

STATE DIFFUSION LAB Making the “Cell” Read Steps 1 -5

STATE DIFFUSION LAB

STATE DIFFUSION LAB

STATE DIFFUSION LAB • Model Cell Observations • Record any changes you see • TESTING BEAKER SOLUTION

STATE DIFFUSION LAB Glucose Indicator ‘BENEDICT’S SOLN. ’ ADDED TO Beaker Solution After heat Answer Questions 1 -7

STATE DIFFUSION LAB Part Two – Diffusion of Water Across a Membrane ( Osmosis ) Using Red Onion Cells Reading and steps 1 -5

3. Wet Mount 1. Snap 2. Peel

Cell Wall Cell membrane Cytoplasm Normal Red Onion Cell 6. Red Onion cell in water 7. Now add Salt Solution

1. Add several drops of salt solution to one side of the cover slip 2. While placing a small piece of paper towel along the opposite edge of the cover slip 3. The paper should draw out the water and draw in the salt solution 4. Make sure that the salt solution has time to diffuse under the cover slip

Cell Wall Cell membrane Cytoplasm Normal Red Onion Cell Membrane Cytoplasm Red Onion in Salt Water 8. -11. What happens to a red onion cell when you add saline solution (salt water) to it?

What makes the cell membrane go back to normal? Red onion cell in salt solution QUESTIONS 12. 15. Add Distilled Water (Pure Water) Distilled water makes a cell GROW the most

Answer analysis questions to complete the lab