Review: Density of a Paper Clip

Enter each group member's AIDE letters


Enter your class period (1-8)

Vocabulary. Match the correct definition to each word.

		cubic centimeters	A. for a given substance, the ratio of mass per unit volume
		density	B. an SI unit based on the quantity of matter present in a physical prototype made of platinuim-iridium
		graduated cylinder	C. a laboratory instrument used to measure an object's gravitational mass in grams
		grams	D. a laboratory instrument used to measure the volume of a liquid in milliliters
		kilograms	E. the amount of space an object occupies
		mean	F. a unit of volume usually referring to solids in which each dimension is measured in cm.
		median	G. the central value in a ranked list of numbers
		meniscus	H. a unit of volume used to measure the amount of liquid present in a sample 1/1000th of a iliter
		milliliters	I. the most frequent value present in a list
		mode	J. a unit of mass that represents 1/1000th of a kilogram
		triple beam balance	K. the concave/convex surface on a liquid resulting from the adhesive properties between the liquid and the walls of the container
		volume	L. the arithmetic average of a group of numbers

Beams. Record the values for each specified position to the nearest hundredth of a gram.

A =

B =

Graduated cylinders. Record the volume of "water" present in each of the cylinders specified. In each case, estimate your final significant digit.


C =	D =	C =	D =

General Questions. Please use the following graph of Mass vs Volume to answer the next series of questions.

1. Which variable belongs on the x-axis? on the y-axis?

2. What are the co-ordinates of two gridpoints?

3. Calculate the slope of this line.

4. If mass is measured in grams and volume in cmł, what are the units for the slope of this line?
What physical quantity does this slope represent?

5. Calculate the y-intercept for this line.

6. What is the equation for this line?

7. Using the equation in #6, interpolate the value for the mass when the volume is 4 cmł.

8. If 20 cmł of a material has a measured mass of 125 grams, would you suspect it of being made of the same material as the items graphed above?

General Questions. Please use the following data to answer this final series of questions.

A group of students recorded the following values for their density of a paper clip.

7.24 g/cmł

8.03 g/cmł

6.52 g/cmł

7.77 g/cmł

7.46 g/cmł

7.00 g/cmł

7.28 g/cmł

7.77 g/cmł

1. What is the mean of this data?

2. What is the mode of this data?

3. What is the median of this data?

4. If the standard deviation for this data group was 0.45 g/cmł, how far from the mean is the most extreme value of 8.03 g/cmł?