Bio 10
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Chemistry | study of composition, structure, properties, and reactions of matter
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| Matter | all substances that make up our world--anything that has mass and occupies space
and is either pure substances or mixtures
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| Chemicals | substances that have the same composition and properties wherever found
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| Scientific Method | set of general principles that help to describe how scientists think
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| Steps of the Scientific Method | Make Observations
Propose a Hypothesis
Conduct Experiments
Form a Conclusion
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| What are the two parts of the scientific notation? | coefficient and power of 10
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| Units of Measurement in Metric | length: m
volume: L
mass: g
Temp: Celsius
Time: s
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| Units of Measurement in SI | length: m
volume: m^3
mass: kg
Temp: K
time: s
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| 1m | 100 cm
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| 1L | 1000mL
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| 1kg | 1000g
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| Measured Numbers | numbers obtained when you measure a quantity such as your height, weight, or temperature
-observe the numerical values of marked lines
-estimate value of the numbers between marks
-use the estimated number as the final number in your measured numbered
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| Significant Figures | -used to represent the amount of error associated w a measurement
-all nonzero digits and zeros between digits
-zeros at the end of a decimal number
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| Exact Numbers | are in definitions that compare two units in the same measuring system
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| Multiplication and Division---Sig Figs | final answer is written so that it has the same number of sig figs as the measurement w the fewest sig figs
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| Adding and Subtracting--Sig Figs | final answer is written so that it has the same number of DECIMAL places as the measurement w the fewest decimal places
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| Equalities | use two different units to describe the same measured amount
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| Density | compares the mass of an object to its volume
DENSITY=MASS OF A SUBSTANCE/VOLUME OF A SUBSTANCE
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| pure substances | have a fixed or definite composition
an element that is composed of one type of atom
a compound that is composed of two or more elements always combined in the same proportion
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| mixtures | contain two or more different substance that are physically mixed but not chemically combined
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| elements | pure substances that contain only one type of material
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| compound | contains two or more elements in a definite ratio
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Created by:
ravalireddy
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