chem quiz

Independent variable

its vaule depends on changes in the independent variable

dependent variable

a variable that depends on changes

positive control group

a group that does not include change to the variable being tested

negative control group

a group that is not exposed to the experiment treatment

constant variable

anything that is held constant or limted


a brief answer to a question


involves a rule or scientific principle that describes why the evidence supports the claim


observations and data that support the claim

significant figures

the number of digits in a vaule often a measurement

conversion factor

a number used to change one set of units to another by multiplying or dividing


how close a measurement is to the actual value


a measure of how close a series of measurements is to the correct or accepted vaule of quantity