Your Guide to Science Fair Topics, Ideas, Experiments, and Winning Displays
Jöns Joseph Berzelius Berzelius studied many different branches of chemistry and is credited with originating these chemical terms: catalysis, polymer, isomer and allotrope. But, his definitions of these terms is very different from that given today. He discovered three chemical elements-cerium, selenium, and thorium-and was the first to isolate the elements silicon, zirconium, and titanium. [...]
Cohesion is the attractive force between like molecules, such as between two water molecules or between two syrup molecules. The syrup in the photo forms a single cascading stream because the syrup molecules are attracted to each other. Discover Cohesion Yourself Wet your thumb and forefinger with water. Press these two fingers together, and then [...]
Cooking is Fun! With this easy recipe, boys and girls will enjoy preparing this tasty holiday treat: Cranberry Relish Let’s Start Cooking 1. Prepare the Fruit With tap water, wash 1 orange, 2 apples, and a 12-ounce (340 g) bag of fresh cranberries. Remove bad berries and any stems on the orange and apples. 2. [...]
1. Calendar: Periodic Table of Days http://wp.me/pSQZl-6sk This article is a good introduction to the periodic table. It uses a calendar to introduce periodicity–repeating patterns. 2. Dmitri Mendeleev’s Periodic Table http://bit.ly/tnjuAT A follow-up article to Calendar: Periodic Table of Days. It provides history information about the origin of the periodic table of [...]
I am in the process of creating a Dynamic Periodic Table, but in the mean time, check out this link: Lynntech’s Dymanic Periodic Table Click on the cell of the element you want more information about.
Solids The particles that make up a solid are very ordered, and the forces between the particles are strong, holding the particles in a rigid form. A solid cannot flow (freely move). Gases Gas particles have no regularity in their arrangement. Gases have no restrictions on their movement, and are widely separated. The forces between [...]
The Periodic Table of Elements is arranged so that elements in groups have similar properties. The valence electrons for Groups 1, 2, 13, 14, 15, 16, 17, and 18 are easily to determine. Groups 1 and 2 The valence electrons for Groups 1 and Group 2 are equal to the group number.In other words, Valence [...]
Using the portion of the periodic table of elements shown, answer these questions: 1. What do the element symbols, H, Li, Na, and K have in common? Answer: The symbols, H, Li, Na, and K are all in the same column (group). The groups are numbered from 1 through 18. These symbols are all in [...]
LIQUIDS FLOW Because liquid particles can move past each other, they can flow. This is very important when transporting liquids from one place to another through pipes or water ways. VISCOSITY is a measure of the resistance of a liquid to flowing. The viscosity of a liquid increases as the temperature of a liquid decreases. [...]
Matter is anything that has mass and takes up space. Mass is defined as the amount of matter that an object is made of. YIKES! Matter has mass and mass is made of matter! This doesn’t tell me what these terms mean. UUM!! For now, let’s say that mass is the amount of STUFF that [...]
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.
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