Science Notes Posts

Trees Word Search — Trees have an important role in our day to day lives. They play a major role in the oxygen cycle and carbon cycles, prevent soil erosion and provide building materials for our homes. Since trees are this important, maybe we should learn their names. This trees word search contains thirty […]

Trees Word Search

This entry was posted on October 3, 2018 by Todd Helmenstine (updated on October 3, 2018)

Amino Acids by Side Chains — Amino acids are the building blocks of polypeptides and proteins, which are used as structural components and enzymes. If you’re taking biochemistry, organic chemistry, or genetics, you need to be familiar with the 20 amino acids and also know their side chains. It’s the nature of the side chains that […]

Amino Acid Side Chains Study Sheet

This entry was posted on October 1, 2018 by Todd Helmenstine

For real: If you shine a low-pressure sodium lamp on a yellow sodium flame, the flame will be black. — Flames emits light and heat, so it seems impossible to make black fire. However, you actually can make black fire by controlling the wavelengths of absorbed and emitted light. Black Fire Materials The set-up is simple and only requires a few materials: Alcohol Salt solution Low-pressure sodium (LPS) lamp Alcohol […]

How to Make Black Fire Recently updated !

This entry was posted on September 29, 2018 by Anne Helmenstine (updated on October 13, 2018)

For many people, hair grows faster on one side than on the other. (Christopher Campbell). — Have you ever noticed your hair grows faster on one side than the other? Your stylist may have pointed it out when you went in for a cut or you may have observed it when shaving your face or legs. Your fingernails and toenails may grow faster on one side […]

Why Hair Grows Faster on One Side

This entry was posted on September 27, 2018 by Anne Helmenstine (updated on October 2, 2018)

Orange juice tastes bad after brushing your teeth because foaming agents affect chemoreceptors in taste buds. — Orange juices tastes terrible if you drink it right after brushing your teeth. It’s a familiar scenario. You wake up in the morning, grab the toothbrush and toothpaste to start the day with that fresh feeling, and head to breakfast. But, you should really re-think the order of things. Save […]

Why Orange Juice Tastes Bad After Brushing

This entry was posted on September 24, 2018 by Anne Helmenstine (updated on October 2, 2018)

Genetic Code Study Sheet — The genetic code is the set of instructions cells use to translate information from genetic material (DNA or mRNA) into amino acids. In turn, amino acids are strung together and modified to build proteins. The genetic code is sometimes called the universal code because it is used by nearly all […]

Genetic Code Chart (PDF) Recently updated !

This entry was posted on September 21, 2018 by Anne Helmenstine (updated on October 13, 2018)