PRACTICAL PAPER Flashcards
independent variable
the factor that changes in an investigation
dependent variable
the factor that changes as a result.
controlled experiment
experiment to ensure independent variable is causing results
standardizing temperature
Thermo-statically controlled water bath
standardizing pH
pH Buffer solution of known concentration
standardizing light
Heat-shielded lamp set at constant
standardizing intensity
Distance/power
standardizing wind speed
Fan set at constant distance & power
measuring temperature
Thermometer
measuring colour
Colorimeter
measuring pH
pH indicator / pH meter
measuring mass
balance
measuring length
Microscope with calibrated eyepiece graticule/Ruler.
measuring volume
Beaker/Measuring cylinder/Burette/Pipette.
measuring time
stopwatch
how to read measuring cylinders accurately
Read from bottom of meniscus, perpendicular to scale