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Chemistry (Unit 1) - Coggle Diagram
Chemistry (Unit 1)
Term Descriptions
Weight
Gravitation force exerted on an object
weight = gravitational force = mg
Density
Mass per unit volume
d=m/v
Increase heat -> density decreases
Mass
Measure of the quantity of matter in an object
Specific Gravity
Ratio of density of liquid or solid to water
sp gr = d of substance / d of water
No units
Experimental Errors
Systematic Errors
Inaccurate instruments
Issue in procedural step
Can be eliminated fully from the experiment
Usually biased in one direction (always larger or smaller)
Random Errors
Chance Errors
ie: room temp during experiment
Can be minimized in experiment
Can be positive or negative errors
Measurement
Terms
Accuracy
How close you are to the true numers
Percent Deviation
(Experimental Value - True Value)/(True Value)
Percision
Reproducibility
How close are values to each other
Constant Weight
Number of Digits used
Exact Numbers
No uncertainty
ie: 5 fingers per hand
Have infinite significant figures