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Inertia

By Janice VanCleave

What is the difference between these science terms: inertia, mass, weight? Inertia measures how difficult it is to move an object. Mass measures how much material is in an object. Weight measures the force of gravity acting on an object. Often times referred to how heavy an object is. Problem: Compare Freddie (a small stuffed toy) […]

Filed Under: Chemistry, General Science, Physics

Celebration Pots

By Janice VanCleave

These kids are decorating clay pots, which will be used to celebrate July 4th. The pots will be filled with soil and instead of holding lit sparklers in their hands, the sparklers will be stuck in the soil inside the pots. The pots can be set at a distance from the kids–not too far and […]

Filed Under: Chemistry

How Crystals Form

By Janice VanCleave

What You Need to Know: A crystal is a solid in which the particles are packed in an ordered, repeated pattern. Precipitation is the process by which a solid falls out of a solution. A precipitate is the solid that precipitates. An evaporite is a precipitate formed by evaporation. What Does This Mean? Crystals are […]

Filed Under: Chemistry Tagged With: crystals, evaporation, evaporite, homogeneous mixture, mixtutre, precipitate, precipitation, solute, solution, solvent

Mega-Absorbers

By Janice VanCleave

Makers of disposable diapers claim that their product is superior to cloth diapers because it keeps babies dryer longer. This is suppose to happen because the diaper has a chemical inside it that not only absorbs more liquid than cloth, but  pulls the liquid away from a baby’s skin. Just how much liquid can these […]

Filed Under: Chemistry

Dimensional Analysis

By Janice VanCleave

Dimensional Analysis This important math process is one of the important skills that  Dimensional Analysis  A math skill that is  not just for those preparing for science careers. It is an every day skill–it can even make cooking easier. Partly because of her dimensional analysis skills, the cook shown “zipped” through her college science courses. […]

Filed Under: Chemistry

Chemistry: Crystals

By Janice VanCleave

Question: What is a crystal? Answer: A crystal is a solid in which the particles making up the crystal are packed in an ordered, repeated pattern. Crystals form much like the forming of clusters of soap bubbles. Soap bubbles represent the particles in a crystal. The bubbles stack together forming a cluster. The addition of […]

Filed Under: Chemistry Tagged With: crystals

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Welcome to Janice’s Science Extravaganza!

The spoon hanging from the string vibrates when struck and these vibrations are transmitted through the string and the sound is amplified by the plastic cups. ABOUT ME: Hi, I am Janice VanCleave, author of 50 best-selling science experiment books for children ages 4 through high school. I taught science for 27 years. MORE.....

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