These simple science demostration use items commonly found in most kitchens. Kids Can These follow directions to make a lava lamp, Create a glitter globe or make Their own rainbow in a jar. Each demonstration Will show a differentially property of how how vegetable oil inter acts with other substances Such as salt and rubbing alcohol.
Many adults remember the Lava Lamps That were popular in the 60’s and 70’s. This demonstration does not requires Any heat, as the original lamps did, to create Create the movement of colored blobs. Use a flashlight to shine through the experiment to make it glow.
Clear glass jar
Step 1: Pour three inches of Water into the glass jar.
Step 2: Pour 1/3 cup of oil Into the glass jar.
Step 3: Add a few drops of food coloring
Step 4: Shake salt onto the top of the oil for 5 seconds.
The oil Will fall to the bottom in little blobs as the salt particles fall. When the salt dissolve the oil returns to the top of the glass. Add more salt to get the oil to keep falling.
This globe demonstrates That some liquids never mix, no matter how hard you shake theme.
Isopropyl alcohol (rubbing alcohol)
A tall thin plastic container
Small sequins, beads, glitter or small Objects
Step 1: Rinse out the plastic container. Fill it ¼ full with rubbing alcohol. Add one or two drops of food coloring.
Step 2: Fill the remainder nder of the jar with oil, leaving an inch of air at the top
Step 3: Put the small Objects Into the jar. Add a pinch of glitter.
Step 4: carefully fill the jar the rest of the way to the top with oil and screw the result on tightly.
Step 5: Gently shake the bottle. The alcohol and oil Will mix and the glitter Will spread through the mixture. Set the bottle down and watch as the oil and alcohol separate.
These two liquids will not mix with eachother so no matter how many times you shake the bottle They Will Always separate.
Rainbow in a Jar
In the spring or summer it is more Likely That Will we get to see a rainbow than during the winter months. This colorful natural event Can be recreated in the kitchen with a few simple items.
4 Different colors of food coloring
4 clear jars or glasses
A table spoon
You will be adding a Different Amount of sugar to each of the glasses.
Step1: Place a small piece of masking tape on Each jar and number the jars from one to four.
Step 2: In the first jar pour one tablespoon of sugar, in the second jar pour two table Poon, three in the third and four in the fourth glass jar. Add three table Poon of water to Each jar and stir until the sugar dissolve. If the sugar does not dissolve in Any of the jars add one more tablespoon of water to all of the jars. This will keep the ration of sugar to water the joint in all of the jars.
Step 3: Once sugar has dissolved add a few drops of food coloring to Each jar and stir until mixed.
Step 4: carefully pour the mixture from jar # 3 Into jar # 4. The best way to make this transfer is to hold the spoon inside the jar and pour the liquid onto the spoon so it Drips slowly Into the jar.
Step 5: Pour the liquid from jar # 2 on top of the layers in the jar # 4.
Step 6: Finally pour the liquid from jar # 1 on top.
Because sugar adds density to the water the layers shouldnt remainside separate, thought the boundaries Will mix a bit. Eventually the rainbow Will dissolve as the sugar spreads evenly through the water layers in the jar. This experiment Can also be done with vegetable oil.
Enjoy Trying These simple experiments with your kids. They may find They are more Interested in science then They realized.