You need to get spoons that are relatively long. If you put the spoon in the pot the handle should be coming out of the pot by about three or four inches. If you want a precise measurement for heat conduction you can also use thermometers. In that case, you’ll need three thermometers and electrical tape.
While any pot will work, a shallow, broad pot might help you balance the butter on the spoons more easily.
If you are using thermometers to measure the heat conduction, tape the thermometers to the handles of each spoon before you put them in the water.
Metal conducts heat better than wood, which conducts heat better than plastic. If you are using thermometers, check your thermometer readings after a few minutes. The same results will appear with specific numbers.
The balloon pops because the candle heated up the balloon, which weakened the balloon.
The candle is warming the water rather than popping the balloon. That’s why water isn’t going flying everywhere. The balloon conducts heat and is able to transfer it to the water without damaging the balloon. If you hold the candle to the balloon long enough it will pop, but it will take much longer than a balloon filled without air.
You can buy wax and metal tacks at a craft store.
You should have six tacks connected to the metal rod in all.
If you have heat resistant gloves and no other way to secure the metal rod over the burner, you can hold the rod there. Keep a steady hand.
This experiment illustrates how metal conducts heat. You can visualize how one end of the metal rod got hot rather than the entire rod heating up at an equal pace. This is based on where the Bunsen burner was placed. If you placed the burner in the middle of the rod, the heat would start in the middle and extend outwards in either direction. [11] X Research source
