Create an account
process that lies at the center of scientific inquiry
1. Make observations (take measurements)
2. Draw hypothesis
3. Perform the experiment
pretty universal system all over the world based on the metric system and units derived from it
aka determinate error; the measurement occurs in the same direction each time; either always being high or always being low
process depends on differences in volatility but important method for separating components of a mixture
substance with constant composition that can be broken down into elements by chemical processes
law of definite proportion
law discovered by Joseph Proust when he found out that a given compound always contains exactly the same proportion of elements by mass
law of multiple proportions
John Dalton discovered this law and it said that when 2 elements form a series of compounds, the ratios of the masses of the 2nd element that combine with 1 gram of the 1st element can always be reduced to small whole numbers
law of conservation of mass
law discovered by Antoine Lavoisier that said that mass is neither created nor destroyed
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