What is a nebula? Space and astronomy
The Eagle Nebula A nebula is a bunch of atoms and molecules floating in outer space, like a cloud of dust. More than one nebula are called nebulae, because -ae is the plural ending [...]
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08, 2017
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06, 2017
Hadean Eon – Earth, Moon, proteins, RNA
In the Hadean Eon, Earth was covered with active volcanoes like this one. Why is it called the Hadean Eon? Scientists named the Hadean Eon after the Greek god Hades, [...]
2
06, 2017
What is plastic? Organic chemistry
Plastic water bottles There are thousands of different kinds of plastic, from shopping bags to Fisher-Price toys to photographic film, CD's, and plumbing pipes. Some plastics, like chewing gum or [...]
2
06, 2017
What is a protein? Organic chemistry
Proteins are a type of molecule made mainly out of hydrogen and carbon atoms. They are combinations of smaller molecules called amino acids. The first amino acids probably developed into proteins more than four [...]
2
06, 2017
Organic chemistry
A diagram of a sugar molecule found in outer space, from NASA Organic molecules means the kind of molecules that living things are made of - at least, all the [...]
2
06, 2017
What are amino acids? Organic chemistry
A model of the amino acid molecule glycine (red is oxygen, black is carbon, yellow is hydrogen, and blue is nitrogen atoms) What are amino acids? Amino acids are molecules made [...]
2
06, 2017
What is nitrogen? Atoms, Elements, Chemistry
Diagram of a nitrogen atom Inside a red giant star, the star smashes lighter atoms together. Smashing atoms gets the star energy to burn, and also leaves extra heavier atoms. Nitrogen [...]
2
06, 2017
What are hydrocarbons? Simple chemistry
A model of a methane molecule - the simplest of hydrocarbons A kind of molecule Hydrocarbons are molecules. They are made out of hydrogen atoms and carbon atoms. Methane is [...]
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05, 2017
Natural Selection – Evolution and Biology
The feet of a person with six toes on each foot Whenever protons and electrons bump into each other, or atoms bump into each other, or molecules bump into each other, [...]
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05, 2017
What are proteinoids? Thermal proteins – Biology
Thermal proteins seen through a microscope Around four billion years ago, some of the amino acid molecules that were on the planet Earth began to join together into bigger molecules [...]
