Carbon is made up of just one type of atom close atomThe smallest particle of an element. We often think of atoms as tiny spheres, but in fact they are made from smaller particles called protons ...
The “lead” of a pencil is actually made of a substance called graphite which is made of carbon atoms. The picture shows a close-up of one carbon atom. A hydrogen atom has one proton as the nucleus and ...
If you don’t have enough of each color, each group can make its own color key for colors to represent hydrogen, oxygen, carbon, and nitrogen. You may want each group to create a color key they can ...
The function of many biologically active molecules requires the presence of carbon-nitrogen bonds in ... The essence of chemical synthesis is to transform simple starting materials into complex ...
A new reagent has moved carbon-atom transfer out of the chemical flatlands, allowing chemists to place a single carbon atom so that it makes bonds to four different substituents. The reagent makes ...
来自MSN12 个月
New technique incorporates carbon-14 in a single step for safer, more efficient drug discovery"This research replaces what can be a days-long, dangerous, and costly process with a simple and safe one ... done by adding a radioactive atom (e.g., carbon-14) to the drug so that its movement ...
Straightforward skeletal editing chemistry now enables the direct insertion of nitrogen into carbon–carbon double bonds.
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