Monthly Archives: May 2020

Diffusion is the movement of molecules from higher to lower concentration. In osmosis, only the solvent (water) is free to move across a semipermeable membrane from higher to lower concentration.
Osmosis and diffusion are two important types of mass transport. Here are the definitions of osmosis and diffusion, examples of each process, and a look at the differences between them. Osmosis and Diffusion Definitions Osmosis – Osmosis is the movement of solvent particles (usually water) across a semipermeable membrane from […]

Osmosis vs Diffusion – Definition and Examples

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Amino Acid Word Search
Amino acids are the basic building blocks of proteins and polypeptides. The 20 most common amino acids, their structures and properties are some of the first things a new biochemistry student memorizes. This amino acid word search is a fun way to acquaint yourself with these amazing molecules.

Amino Acid Word Search

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The light year is a unit of length used to measure vast distances, like between galaxies.
The light year (ly) is a unit of length that is the distance light travels in a vacuum in one Earth year. One light year is approximately 9.46 trillion kilometers (9.46 x 1012 km) or 5.88 trillion miles (5.88 x 1012 mi). The light year is used to describe distances to stars without having to use very […]

What Is a Light Year? Definition and Examples

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Use a graduated cylinder or narrow glass to illustrate the different density values of common liquids.
This is a table of density of common materials. Density is a measure of the amount of matter per unit of volume. This is the mass divided by the volume of a substance. Generally, gases are less dense than liquids, which are less dense than solids. However, there are many […]

Table of Density of Common Materials

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Potassium nitrate crystals form needle shapes when crystallized from water.
Potassium nitrate crystals are among the safest and easiest crystals to grow. Potassium nitrate (KNO3) is also known as saltpeter. It’s used in processed meats, fertilizers, gunpowder, fireworks, and many science projects. Here’s how to make potassium nitrate crystals and a look at how to up your game to grow […]

How to Make Potassium Nitrate Crystals

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