Properties of water Labs Explanation

Water Labs• There are 7 labs to do• Each bucket is labeled with the lab and all

the directions are in the bucket. Read the DIRECTIONS!!!• Read your blue lab sheet carefully before

you start each lab.• Your groups will go at its own pace, grab a

bucket when you are ready to go to the next one.• Return the bucket the exact way you found

it!! Clean up!!

PENNIES1. Grab a penny from the container. 2. Using the red water and the eyedropper. Add as many

drops of water that you can before the water falls off. RELEASE THE DROPS CAREFULLY

3. Dry off your penny and repeat using the blue alcohol counting as many drop as you can put on top of the penny.

4. Dry off your penny. Smear a tiny amount of detergent on the head of the penny and THEN add as many drop of water on top of your penny as possible.

TOOTHPICKS1. Take two toothpicks and

balance them on the surface of the beaker, parallel to each other.

2. Place one drop of detergent between the two toothpicks.

3. Observe4. Rinse out glass when done.

ALCOHOL and WATER1. Measure out 25mL of water in a graduated cylinder.2. Measure out 25mL of alcohol in another graduated

cylinder.3. When you combine the 2 liquids, what do you think the

combined volume will be? Write that on you lab sheet.4. Now, Combine the 2 liquids in one of the cylinders.5. Observe.

SUGAR CUBE

1. Pour 10 mL of red water into the glass bowl.2. Place the sugar cube into the water.3. Observe.4. Repeat using a 2nd sugar cube

BLOCKS1. Calculate the volume of the blocks. (you only need to

do this once because they are all the same size) Use the formula (l x w x h) and calculate it in cm. Place this number in your chart.

2. Find the mass of each cube. Place this number in your chart.

3. Volume = l x w x h

2.5 cm

DENSITIES OF WATERPart A: Ice and Water.• Observe the container with ice and water. • What can you assume about the density of ice compared

to water.Part B: Salt water and Fresh Water• The blue water is salt water and the green water is fresh

water.• CAREFULLY drop a hard boiled egg in each of the waters.

Observe the differences in the way the egg reacts.

OIL and WATER1. Pour 25 mL of water in 1 of the cups

2. Pour 25mL of oil in 1 cup.

3. Drop a scoop of salt in one water cup and one oil cup. Observe.

4. Drop a scoop of baking soda in one water cup and one oil cup. Observe.

5. Drop 3 drops of food coloring in one water cup and one oil cup. Observe.

USE ONLY 2 CUPS

Pennies

Pennies

Cohesion: water sticking to water

Sugar Cubes

Sugar cubes

Sugar Cube

Adhesion-water sticking to other things

Cohesion-water sticking to water

CAPILLARY ACTION

Density of water

Density of Water

The density of ice is less than the density of water

SALT WATER FRESH WATER

Salt water has a higher density than fresh water

Alcohol and WaterUniversal Solvent - polarity

+ = 25 mL of Alcohol

25 mL of water ?

Oil and Water

Oil and Water

OIL Water

Water is polar

Oil is Non polar

Food Coloring is polar

Density of Blocks

2.5 cm

Mass= 24 grams

Volume is 15.6

Density = Mass/Volume

Density of Blocks

2.5 cm

Mass= 24 grams

Volume is 15.6

Density = Mass/Volume

24/15.6 = 1.5Will it sink or float in water?

Toothpicks

Toothpicks

Cohesion caused the toothpicks to float (water sticking to water creates surface tension)

Detergent breaks the surface tension