Learn what a prime number is and see how to tell if a number is prime. Get a list of primes under 100 and 1000.
Monthly Archives: June 2021
Learn how to make Pharaoh's serpent or a black snake. This chemical reaction, once used as a firework, is a cool chemistry demonstration.
How to Make Pharaoh’s Serpent – Simple Black Snake Demo
Learn why hydrogen peroxide bubbles on a cut yet not on unbroken skin. Understand the risks of using peroxide on wounds.
Why Does Hydrogen Peroxide Bubble on a Cut?
Learn about the difference between systematic and random error. Get examples of the types of error and the effect on accuracy and precision.
Systematic vs Random Error – Differences and Examples
Learn what a real number is in math. Get examples of numbers that are real versus those that are imaginary.
What Is a Real Number? Definition and Examples
Learn about periodic table groups and periods. Learn how to identify them on the table and see what elements within them share in common.
Periodic Table Groups and Periods
Learn why the periodic table is color coded and print a color coded periodic table to use for solving chemistry problems.
Why Is the Periodic Table Color Coded?
Learn the difference between bugs and insects. Gets examples of creatures that are bugs and learn their defining characteristics.
Difference Between Bugs and Insects
Get the definition of a base in chemistry. See examples of bases and learn about their properties and uses.