| Science 9 difficulties - Daltons atomic theory
Okay, so this is grade 9 science and it isn't insanely hard, but I'm doing some research for a project in which I have to explain the history of the atomic theory. Besides the five main points, theres one extra point that just doesn't make sense. Here is what it says:
When atoms combine in only one ratio, "..it must be presumed to be a binary one, unless some cause appear to the contrary".
I'm really just having difficulty understanding what this means. Could somebody explain what this means? Thanks.
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