Refers to how well experimental values agree with each other. Requires more than one measurement.
What is precision
100
____ is information from which conclusions can be made.
What is data
100
The equation for finding density
What is D=M/V
200
2 x 10^0 in standard notation
what is 2
200
For the safety of others, what should you remember to do when heating a test tube?
Point the open end in a safe direction (away from others)
200
Quantitative observation made up of three parts; a number, an estimate, and a unit (g,L,cm)
What is a measurement
200
The ____ group is a standard by which any change can be measured.
What is control
200
____ is the quantity of matter in an object.
What is mass
300
How many sig figs are in 0.03020?
What is 4
300
Proper technique for smelling a liquid in the lab.
What is wafting
300
Refers to the agreement between experimental data and a known value. Requires only one measurement.
What is accuracy
300
A ___ is a possible explanation for a set of observations or answer to a scientific question; must be testable.
What is a hypothesis
300
What is the density of water?
What is 1 g/cm^3
400
0.00420 in scientific notation
What is 4.20 x 10^-3
400
When should excess or unused materials be put back into their container?
What is NEVER
400
You are playing soccer and you always hit the left goal post instead of scoring. Your attempts are ____ . (in terms of accuracy and precision)
What is precise
400
The ____ variable is changed to test a hypothesis.
What is independent
400
A cube has a side of 5 cm. It has a mass of 250 grams. Find the density.
What is 2
500
Do the following calculation and report your answer rounded to the correct number of sig figs. 200.0 x 0.8
What is 200
500
Any activity that involves poisonous vapors must be carried out in a _____ .
What is a fume hood
500
A sample of powdered metal is weighed by each of four students. The true value is 8.14 g. The results are as follows: 8.11g, 8.17g, 7.14g, 9.14g. The students' collective measurements could be described as _____ .
What is accurate
500
The first step of the scientific method is _____ .
What is research (or) making observations
500
A graduated cylinder with 10 mL of water has a mass of 70 g. When a rubber eraser is placed in the cylinder, the volume of the water rises to 30 mL, and the mass rises to 125 g.
The density of the eraser is ______ .