Acc. Vs. Pre.
If you measured a box 4 times, and the same measurement occurs every four times, is it accurate or precise?
Precise
what lab equipment produces a flame and changes the volume of oxygen?
Bunsen Burner
What is 5.67 km in mm?
5600000 mm
What is the independent variable?
Variable that changes
If I shoot an arrow and it lands on the bullseye, is it accurate or precise?
Accurate
What lab equipment is with a narrow tubular neck and a flat bottom?
Conical flask
Write the metric system that we learned in class
Answers on papers
What is qualitative data?
data relating to, measuring, or measured by the quality of something rather than its quantity.
An example of an accurate experiment?
Students answers may vary
Draw a beaker
Answers on paper
What is the formula for density?
D=m/v
How many independent variables and dependent variables should there be?
1
Give an example of a precise experiment.
Students answers may vary
What is the purpose of a clamp stand?
Clamp stands hold test tubes above bunsen burners in certain distances, weights, and angles.
If the mass is 36g, and the volume is 6.7ml, what is the density? (round to the nearest tenth)
5.4 g/ml
Quatitative data is seen in ----- graphs
Line graphs
What is the difference between accuracy and precision?
Accuracy depends on the comparison between a measurement and the true value
Precision depends on the closeness of the points.
What is the purpose of an evaporating basin?
(with details)
Evaporation basins evaporate excess solvents to reveal a concentration/ insoluable product
If the density is 6 g/ml, and the volume is 7ml, what is the mass?
42g
What is the line of best fit?
refers to a line through a scatter plot of data points that best expresses the relationship between those points