Metric Measurement Lab Part A: Water Displacement Follow the directions to find the volume of a microscope slide using a ruler and then water displacement. 1. Determine the volume of one microscope slide using a meter stick and calipers. Given: length x width x height= volume __________ x __________ x __________ =________________cm3 2. Add 50 ml of water to a 100 ml graduated cylinder. Record this amount in the chart. 3. Add the slide to the cylinder and measure the volume. Record this amount in the chart. 4. Find the difference between the two measurements and record in the chart. The difference between the two measurements will be the volume of the slide. Volume of Water Volume of Water After Before adding Slide (ml) Adding Slide (ml) Given: 1 cm3 = 1 ml Difference in Volume (ml) Volume of the Slide and Given: [ ( measured – water displacement) / water displacement ] X 100 = percent error Question #1: Compare your two values. Are they the same? Why or why not? Question #2: Which measurement is more accurate? Why? Question #3: What is your percent error? **Make sure to have your teacher stamp your data sheet! Part B: Reading between the Lines Examine the 25, 50 and 100 ml graduated cylinders. Each are marked with white/clear lines of various length…short…medium…long. Determine the volumes below… Graduated Cylinder 25 ml Volume between Long Line and Short Line Volume between Long Line and Medium Line 50 ml 100 ml **Make sure to have your teacher stamp your data sheet! Volume between Long Line and long line Part C: Color Challenge 3. Obtain the following items from your teacher: 3 beakers with colored water- 25 ml of each color (red, blue, and yellow) 1 graduated cylinder (25 ml – 50 ml) 1 eyedropper 6 test tubes labeled A, B, C, D, E, and F 2. Perform each step outlined below using accurate measurements. b. c. d. e. f. g. h. i. j. Measure Measure Measure Measure Measure Measure Measure Measure Measure 17 ml of RED water from the beaker and pour into test tube A. 21 ml of YELLOW water from the beaker and pour into test tube C 22 ml of BLUE water from the beaker and pour into test tube E. 5 ml of water from test tube A and pour it into test tube B. 6 ml of water from test tube C and pour it into test tube D. 8 ml of water from test tube E and pour it into test tube F. 5 ml of water from test tube C and pour it into test tube B. 2 ml of water from test tube A and pour it into test tube F. 4 ml of water from test tube E and pour it into test tube D. 3. Complete the chart. Test Tube Color Final Volume (ml) A B C D E F **Teacher must see final product for a stamp. Part D: Comparing Balances Using the triple beam balance measure the mass of a 250 ml beaker. _________ g Now use an electronic balance to determine the mass of the same beaker _________g Given: [ ( triple beam – electronic) / electronic ] X 100 = percent error Calculate the percent error between these two devices. ****Make sure to have your teacher stamp your data sheet! Part E: Density of a Metal Cube Given: density = mass / volume Given: volume = length x width x height Given: [ ( calculated density – accepted density) / accepted density] X 100 = percent error Obtain a metal cube from your teacher. Record the type of metal here. ____________________________ Measure the mass of the cube with the triple beam balance. Measure the volume of the cube with the ruler. _________ g _________ cm3 Calculate the density of your cube. _____________ g/cm3 Using the chart given, what is the accepted value of density for your metal? _____________ g/cm3 What is your percent error? __________ % **Make sure to have your teacher stamp your data sheet! Part F: What is What?? Look at the following types of laboratory equipment labeled A through I. Name the equipment from the words below. Then fill in the name next to the letter in the chart below. Beaker Erlenmeyer Flask Graduated Cylinder Test tube Test tube rack Bunsen burner A: B: C: D: E: F: G: H: I: **Make sure to have your teacher stamp your data sheet! Pipette Well plate Forceps Your Name____________________________ Date_____________ Period____ Lab Partners_____________________________________________________________ Metric Measurement Lab Answer Sheet Part A: Water Displacement __________ x __________ x __________ =________________cm3 Volume of Water Volume of Water After Before adding Slide (ml) Adding Slide (ml) Difference in Volume (ml) Volume of the Slide Question #1: Compare your two values. Are they the same? Why or why not? Question #2: Which measurement is more accurate? Why? Question #3: What is your percent error? Teacher stamp here: Part B: Reading between the Lines Graduated Cylinder 25 ml Volume between Long Line and Short Line Volume between Long Line and Medium Line Volume between Long Line and long line 50 ml 100 ml Teacher stamp here: Part C: Color Challenge Test Tube Color Final Volume (ml) A B C D E F Teacher stamp here: Part D: Comparing Balances Using the triple beam balance measure the mass of a 250 ml beaker. _________ g Now use an electronic balance to determine the mass of the same beaker. _________g Calculate the percent error between these two devices. Teacher stamp here: Part E: Density of a Metal Cube Type of metal: ___________________________ Mass of the cube with the triple beam balance. Volume of the cube using a ruler. _________ g _________ cm3 Calculate the density of your cube. _____________ g/cm3 Accepted value of density for your metal _____________ g/cm3 What is your percent error? __________ % Teacher stamp here: Part F: What is What? A: B: C: D: E: F: G: H: I: Teacher stamp here: