The floating egg experiment uses an egg, a glass, water and salt. Fill the glass halfway with water. Mix 6 tbsp. of salt into the water. Pour plain water into the glass without mixing it into the salty water. Slowly drop the egg into the water. If the plain water did not mix with the salty water, then the egg will remain in the middle of the glass. Such an occurrence emerges due to the density of the salty water. The plain water, which is void of density, causes the egg to drop until it reaches the salty water. Water that contains salt will be denser than regular water, thus making objects float easier.
The quick sand experiment requires 1 cup of maize corn flour, water, a large plastic container and a spoon. Place the corn flour into the container and stir in 1/2 cup water. Once you add the right amount of water to the corn flour and you stir quickly, the mixture will become very thick and hard. This occurs as a result of the corn flour grains becoming mixed up and being unable to move over each other due to the lack of water between them. On the other hand, when you stir the mixture slowly more water passes through the corn flour grains, thus allowing them to move over each other with ease. The slower method highlights the quick sand consistency.
The baking soda and vinegar experiment utilizes baking soda, vinegar and a container. This experiment demonstrates the chemical reaction between baking soda and vinegar. Place 3 to 4 tbsp. of baking soda in a container and pour 1/2 cup vinegar over it. The baking soda or sodium bicarbonate serves as a base, while the vinegar or acetic acid acts as an acid. When mixed, the baking soda and vinegar form a carbonic acid. This acid is unstable and splits into water and carbon dioxide, thus creating the fizzing aspect as it erupts.
The oil and water experiment involves the use of a small soft drink bottle, water, food coloring, cooking oil and detergent. Pour water into a container and sprinkle a few drops of food coloring into the water. Add 2 tbsp. of colored water and 2 tbsp. of oil to the soft drink bottle. Tighten the bottle cover and shake vigorously. After shaking, place the bottle on a stable surface and observe the results. Initially, it will appear as if the liquids become one. However, the oil will rise up to the top. Water molecules draw closely to each other and the same goes for oil molecules. Therefore, each liquid attracts its own molecules and does not mix with another substance. Adding detergent to the mixture will form an emulsion. This occurs because detergent is attracted to oil and water, thus facilitating the liquids' ability to join together.