chemistry chapters 1-2.5
Terms
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- chemistry
- the science of the compsition, structure, properties, and the reactions of matter, especially of atomic and molecular systems
- scientific method
- collect the facts or data, formulate a hypothesis, pl,an and do additional experiments to test the hypothesis, modify hpyothesis
- hypothesis
- tentative explanation of certain facts that provides a basis for further experimentation
- theory
- explanation of the general principles of certain phenomena with considerable evidence or facts to support it
- scientific laws
- simple statements of natural phenomena to which no exceptions are known under the given conditions
- mass
- a fixed and unvarying quantity that is independent of the objects location
- weight
- measure of the earths gravitational attration for that object
- rounding off numbers
- when digits are dropped from a number, the value of the last digit retained
- scientific notation
- writing a number as a power of 10
- significant figures
- every number that expresses a measurement