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NCT PhSci Ch1

Chapter 1 review

QuestionAnswer
Chemistry The science of matter and changes of matter
science knowledge obtained by observing natural events and conditions in order to discover facts and formulate laws or principles that can be verified or tested.
technology the application of science for practical purposes
scientific law a summary of many experimental results and observations; tells how things work but does not explain why, like F = m times a
scientific theory an explanation for some phenomenon or happening that is based on observation, experimentation, and reasoning. It explains why something happens.
critical thinking the ability and willingness to assess claims critically and to make judgments on the basis of objective and supported reasons
scientific method a series of steps followed to solve problems, including collecting data, formulating a hypothesis, testing the hypothesis, and stating conclusions
variable a factor that changes in an experiment in order to test a hypothesis
length a measure of the straight-line distance between two points
mass a measure of the amount of matter in an object
volume a measure of the size of a body or region in three-dimensional space
weight a measure of the gravitational force on an object
scientific notation a method of expressing a quantity as a number multiplied by 10 to the appropriate power
precision the exactness of a measurement
significant figure a prescribed decimal place that determines the amount of rounding off to be done based on the precision of the measurement
accuracy a description of how close a measurement is to the true value of the quantity measured
homogeneous uniform in structure or composition throughout
heterogeneous composed of different structures or or substances in different areas
8 kilometers = ______ meters 8000 meters = ______kilometers
600 millimeters = ______kilometers 0.0006 kilometers = _______millimeters
55 centimeters = _____meters 0.55 meters = ______ centimeters
3778 grams = _____kilograms 3.778 kilograms = _____grams
Created by: markesommer
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