Rainbow Lab
Materials:
Scale/Balance
1-100 mL Graduated Cylinder
2-150 mL Beakers
Pipette
Sheet of background paper, white
kosher Salt
Food coloring
Water
Solution
First me and my partner get our materials, a graduated cylinder and the two beakers. We filled the beakers up with water. We then put 16 grams of salt into the beaker and stirred until it dissolved. After this we had to added 3 drops of the blue food coloring to the beaker and stirred it. We dropped the blue water carefully with the pipette into the graduated cylinder. We repeated this process with the next 4 colors (green, yellow, orange, and red). The only difference was the amount of salt we were to put in each color.
Scale/Balance
1-100 mL Graduated Cylinder
2-150 mL Beakers
Pipette
Sheet of background paper, white
kosher Salt
Food coloring
Water
Solution
First me and my partner get our materials, a graduated cylinder and the two beakers. We filled the beakers up with water. We then put 16 grams of salt into the beaker and stirred until it dissolved. After this we had to added 3 drops of the blue food coloring to the beaker and stirred it. We dropped the blue water carefully with the pipette into the graduated cylinder. We repeated this process with the next 4 colors (green, yellow, orange, and red). The only difference was the amount of salt we were to put in each color.
Mass of Salt Mass of Water Mass of solution Volume of Solution Density of Solution
16.0 g 60.0g 76.0g 60.0mL 1.27g/mL
11.7g 60.0g 71.7g 60.0mL 1.20g/mL
7.2 g 60.0g 67.2g 60.0mL 1.12g/mL
3.4 g 60.0g 63.4g 60.0mL 1.06g/mL
0.0 g 60.0g 60.0g 60.0 mL 1g/mL
16.0 g 60.0g 76.0g 60.0mL 1.27g/mL
11.7g 60.0g 71.7g 60.0mL 1.20g/mL
7.2 g 60.0g 67.2g 60.0mL 1.12g/mL
3.4 g 60.0g 63.4g 60.0mL 1.06g/mL
0.0 g 60.0g 60.0g 60.0 mL 1g/mL
Conclusion:
1. The reason why the solutions formed all different layers is because the layers at the bottom had more salt therefore there more dense, and the ones with less salt stayed at the surface.
2. The saltiest layers of the ocean would be found at the bottom just like how the saltiest layers in this project were. The saltier the more dense so they stay at the bottom.
3. The density can get lower or higher depending on the temperature of the area.
4. The warm fresh water would be at the surface because the water is less salty and the sun is hitting the surface. The cold salty water is at the bottom because it's more dense.
1. The reason why the solutions formed all different layers is because the layers at the bottom had more salt therefore there more dense, and the ones with less salt stayed at the surface.
2. The saltiest layers of the ocean would be found at the bottom just like how the saltiest layers in this project were. The saltier the more dense so they stay at the bottom.
3. The density can get lower or higher depending on the temperature of the area.
4. The warm fresh water would be at the surface because the water is less salty and the sun is hitting the surface. The cold salty water is at the bottom because it's more dense.