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39 Cards in this Set

  • Front
  • Back
a tentative explanation for an observation, phenomenon, or scientific problem that can be tested by further investigation
hypothesis
a broad generalization that explains a phenomenon
theory
numerical info (measurements)
quantitative
non-numerical info (descriptions)
qualitative
If- then, If I drop something, then it will fall is an example of a...
hypothesis
the variable you control, - you change this
independent variable
the variable you measure, - your results
dependent variable
the _________ variable should be placed on the X-axis
independent
the _________ variable should be placed on the Y-axis
dependent
SI Base Unit for length
meter
SI Base Unit for mass
kilogram
SI Base Unit for time
second
SI Base Unit for Temperature
kelvin
SI Base Unit for Concentration(amount on substance)
Mole/Molarity
Unit for Area
m(2)
Unit for Volume
m(3)
Unit for density
kg/m(3)
Unit for Molar Mass
kg/mole
a ratio that shows the equivalence relationship between the two units
Conversion Factor
all digits in a measurement that are known with certainty plus a final estimated digit
Significant Figures
study of composition, structure, and properties of matter, plus the changes it undergoes
Chemistry
anything that has mass and takes up space
Matter
the amount of matter *not the same as weight, *weight depends on gravity, and ______ does not
mass
smallest unit of an element that maintains the properties of that element
atom
a pure substance made of one kind of atom
element
substance made from atoms of two or more elements that are chemically bonded
compound
depends on the amount of matter present
volume
mass
amount of energy
extensive properties
does not depend on the amount of matter present
melting/boiling points
density
color
conductivity
intensive properties
can be observed without changing the identity of the substance
physical properties
describes how the substance reacts with other substances to form new substances
chemical properties
a change that does not alter the identity of the substance
Physical Change
three most common states of matter
solid, liquid, gas
definite volume and definite shape
solid
definite volume and indefinite shape
liquid
indefinite volume and indefinite shape
gass
one or more substances are converted into different substances
Chemical Change
organiazes the elements bases on their chemical properties
The periodic table
the vertical columns in the periodic table are the......
groups or families
the horizontal columns in the periodic table are the......
periods