Lava Lampe
Science is Cool: Building a Lava Lamp
Using your knowledge of chemistry, follow the instructions on building a lava lamp and answer the questions with your team. Use your knowledge from Middle School!
Materials
Clean, plastic water bottle
Vegetable oil
Food coloring
Alka-Seltzer package
A funnel
Water
Procedure
1. 1) Add 100 ml of tap water to the bottle.
2. 2) Add 100 ml of vegetable oil to the bottle.
3. 3) Add a maximum of 3 drops of food coloring to the bottle.
4. 4) Add 2 alka seltzer tablets and observe.
5. 5) Say ‘ Wow, that is so cool!’. ‘I love Science!’
Questions
Define the following terms and use them in your answers below.
• - Solubility: The solubility of a substance is essentially the amount of that substance …show more content…
• - Insoluble: An insoluble substance is one that cannot be dissolved in a solvent.
• - Hydrophilic: A hydrophilic substance is one whose molecules bond with water molecules, which helps form semipermeable membranes (lipid bi-layers). Hydrophilic molecules attract water.
• - Hydrophobic: Hydrophobic substances do not bond with water and they resist water molecules. An example of a hydrophobic substance is oil.
• - Density: The density of an object is determined by using the formula mass/volume. This means that density is the amount of matter in an object with a constant volume.
1) Explain what happens when the oil was added to the water?
When the oil was added to the water, the oil stayed afloat. This happened because the oil is less dense than water and it is a hydrophobic substance.
2) Which substance is on the top and …show more content…
It is also less dense then water, so that’s why it stayed on top of the water. When I added the food coloring, it went below the oil because it is more dense. It then diffused into the water because it is soluble. Upon adding the Alka-Seltzer tablets, a chemical reaction took place in the water and food coloring mixture. The gases from the tablets then tried to get into the air. When they tried to get through the oil, they brought a bit of water and food coloring with them. It was this phenomenon that formed bubbles in the
Using your knowledge of chemistry, follow the instructions on building a lava lamp and answer the questions with your team. Use your knowledge from Middle School!
Materials
Clean, plastic water bottle
Vegetable oil
Food coloring
Alka-Seltzer package
A funnel
Water
Procedure
1. 1) Add 100 ml of tap water to the bottle.
2. 2) Add 100 ml of vegetable oil to the bottle.
3. 3) Add a maximum of 3 drops of food coloring to the bottle.
4. 4) Add 2 alka seltzer tablets and observe.
5. 5) Say ‘ Wow, that is so cool!’. ‘I love Science!’
Questions
Define the following terms and use them in your answers below.
• - Solubility: The solubility of a substance is essentially the amount of that substance …show more content…
• - Insoluble: An insoluble substance is one that cannot be dissolved in a solvent.
• - Hydrophilic: A hydrophilic substance is one whose molecules bond with water molecules, which helps form semipermeable membranes (lipid bi-layers). Hydrophilic molecules attract water.
• - Hydrophobic: Hydrophobic substances do not bond with water and they resist water molecules. An example of a hydrophobic substance is oil.
• - Density: The density of an object is determined by using the formula mass/volume. This means that density is the amount of matter in an object with a constant volume.
1) Explain what happens when the oil was added to the water?
When the oil was added to the water, the oil stayed afloat. This happened because the oil is less dense than water and it is a hydrophobic substance.
2) Which substance is on the top and …show more content…
It is also less dense then water, so that’s why it stayed on top of the water. When I added the food coloring, it went below the oil because it is more dense. It then diffused into the water because it is soluble. Upon adding the Alka-Seltzer tablets, a chemical reaction took place in the water and food coloring mixture. The gases from the tablets then tried to get into the air. When they tried to get through the oil, they brought a bit of water and food coloring with them. It was this phenomenon that formed bubbles in the