i got double award BUT we have these things called module tests which we do everytime we learn something about ''atoms and space '' or something like that which eventually goes towards my final gradeOriginally posted by Rat Faced@10 December 2003 - 14:41
The same compound always contains the same elements combined together in the same proportion by weight.
According to atomic theory, a compound is formed by the combination of definite number of atoms of different elements. Since each atoms has its own characteristic weight, the relative weight of each component in the compound must always be the same and, therefore, in every pure sample of the same compound, the elements must always be present in the same proportions by weight.
So for example, a molecule of water will always have the same weight as another molecule of water, as the proportions of Hydrogen atoms and Oxygen atoms will be identicle.
my final exam conmsists of all the modules - which equal biology physics and chemistry
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