equipment
Used to grind up solids
mortar and pestle
Wafting
The correct way to smell something in the lab
mass
kilograms
4
Something that is manipulated by the experimenter
independent variable
Measures liquids and is used to hold liquids, has a large bottom and a small neck and mouth
Erlenmeyer flask
range is used to determine _________
precision
density
grams/cubic centimeters
grams/mililiters
write in scientific notation: 279.0
2.790 x 102
what is being measured
dependent variable
glass, plastic or wooden sticks used for stirring
Stirring rod
Percent error is used to determine _________
accuarcy
length
meters
Write in standard: 3.6 x 105
360000
a variable that must be kept the same so that the investigation tests the relationship stated in the hypothesis
controlled variable
Small scooper used to transfer crystals and powders
Scoopula/ Spatula
A systematic error, such as a miscalibrated balance, will affect the _______
accuacy
volume
millilitrs
how many sig figs in 3.00 x 10-4
3
something that has to be the same in the testing environment
constant
Used to magnify objects, handheld
hand lens
A random error, such as random eye movement when reading a meniscus, will affect the _______
precsion
temperature
Kelvin
Write in Standard form: 4.5 x 10-2
0.045
what could have affected the results that could be changed if experiment was repeated
limitation