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Chemistry Final
Question | Answer |
---|---|
Size, shape, color, temperature,texture, and weight. | Physical property |
Things you cannot observe using the five senses. How a chemical reacts in a given situation. | Chemical property |
A statement that can be tested. | Hypothesis |
A general principle that has been developed to explain a wide variety of phenomena. Must be consistent with known experimental results. | Theory |
An observation that has been repeatedly seen. | Law |
Does not have a uniform composition. Has different properties in different parts of the mixture. | Heterogeneous |
Has a uniform composition. Uniform properties in different parts of the mixture. | Homogeneous |
Formula for density | Mass / Volume |
Sometimes called Proust's law. States that a chemical compound always contains exactly the same proportion of elements by mass. | Law of Definite Proportions |
The mass of the products equals the mass of the reactants. | Law of Conservation of Mass |
Cathode ray led to the discovery of... | the electron |
Gold foil experiment | structure of the atom |
6.0221415 × 10^23 | Avagadro's number |