1. Pure substances cannot be separated into any other kinds of matter, while a mixture is a combination of two or more pure substances.
2. A pure substance has constant physical and chemical properties, while mixtures have varying physical and chemical properties (i.e., boiling point and melting point).
3. A pure substance is pure, while a mixture is impure.
Step one of the Hydrogen fusion process helium a nucleus of Deuterium is formed from two protons with the emission of an antielectron and a neutrino.
The fundamental Hydrogen fusion cycle includes 4 Hydrogen nuclei and two electrons and yields a Helium nucleus, two neutrinos and six photons. The principle series phase is the stage in development where the center temperature reaches the point for the fusion to begin. in this manner, the protons of hydrogen are converted into atoms of helium.
If the star is big sufficient to fuse hydrogen atoms into helium, it's going to enter the phase that our solar is in, referred to as the primary sequence section. a celebrity will enjoy most of its existence in the major series section. At this point nuclear fusion is turning hydrogen into helium.
A star isn't always absolutely a star until it is able to fuse hydrogen into helium. before that, they are called Protostars. A protostar is fashioned as gravity begins to tug the gases together right into a ball. This process is referred to as accretion.
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Chromatography is a way of separating a mixture of chemicals which are in gas or liquid form. when the paper absorbs the liquid, the different colours from the colouring pencils will not be separated because they are insoluble solid pieces,also because they are solid the colours will not be able to creep up the paper which is why chromatography can not be used to separate different coloured pencils.
There is 1 aluminium atom and 4 polonium atoms
Denitrifying bacteria converts
nitrates to nitrogen gas
Nitrifying bacteria converts ammonium to nitrites
Nitrogen fixation removes nitrogen from the atmosphere
I hope this helps
