Reactants Begin a Reaction and Products Complete a Reaction
The number of electrons in the outermost shell of an atom determines its reactivity.
Answer:
This is because there is no air in space – it is a vacuum. Sound waves cannot travel through a vacuum. ... Even the emptiest parts of space contain at least a few hundred atoms or molecules per cubic metre. Space is also filled with many forms of radiation that are dangerous to astronauts.
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