Lab Safety and Equipment
Measurement
Dimensional Analysis and Scientific Notation
Scientific Method
Mixed Review
100
Describe the appropriate way to smell an unknown substance in the lab.
Waft, or wave your hand over the container, holding your nose away from it.
100
This term describes how close a measurement is to the true, or accepted, value.
Accuracy
100
Write 1200 in scientific notation.
1.2 x 103
100
What is the part of an experiment that serves as a standard or basis for comparison.
The control group
100
What is the SI unit for temperature?
K (Kelvin)
200
Name this object:
beaker
200
This term refers to how close a series of measurements are to each other
precision
200
This term refers to a ratio of equivalent values used in dimensional analysis.
Conversion factor
200
What variable in an experiment is changed by the experimenter?
The independent variable.
200
This piece of lab equipment is used to crush and grind solids.
mortar and pestle
300
What piece of safety equipment should you wear whenever you are working with heat, glass, or liquids?
Safety goggles.
300
This term refers to the curved surface of a liquid when measuring with a graduated cylinder.
meniscus
300
Use dimensional analysis to convert 6ft to m
1.83m
300
When graphing data, on which axis do you place the dependent variable?
the y-axis (the vertical axis)
300
This term refers to a description of how things happen or what happens in nature.
A scientific law
400
Where should you place broken glass?
In the special broken glass container.
400
Convert 20°C to K
293 K
400
Convert 5.67 x 10-5 to standard notation.
0.0000567
400
This type of observation is something numerical or measurable
quantitative
400
Write 0.000035 in scientific notation.
3.5 x 10-5
500
Which piece of glassware is used for measuring exact volumes of liquids?
a graduated cylinder
500
Convert 100°F to K
311 K
500
Use dimensional analysis to convert 4 cups to L
0.95 L
500
This term refers to an explanation, based on evidence, of why things happen.
a scientific theory
500
This term refers to a testable prediction that predicts a cause and effect relationship between two variables.
Hypothesis