• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Accuracy and Precision Lab Report

Extracts from this document...


Lab Report: Accuracy and Precision Summary: In this experiment, we recorded the smallest unit of measurement for a ruler, two graduated cylinders, and a scale on a balance. We evaluated the measurement of volume, length, mass, and temperature. Next, we measured the temperature of water. We then found the mass and volume of water, as well as the mass and volume of the unknown metal. By subtracting volumes, we found the density of the metal, and compared it to densities of other common metals until we found the density that best matched out metal. Data: Table 1 Table 2 Table 3 Table 4 Table 5 Analysis and Interpretation: 1.) Uncertainty Figures: Ruler: Height of 50mL mark on graduated cylinder: (� 0.1cm / 9.5cm) * 100 = � 1.053% Inside width of graduated cylinder: (� 0.1cm / 2.5cm) ...read more.


Mass of water is determined by subtracting the mass of the 25mL cylinder from the measured mass of the 25mL cylinder and water, or: 65.1g - 50.8g = 14.3g The mass of the water according to the density formula is D = M / V, or 0.997569= m / 16mL, or 15.961g. The experimental error looks like this: (14.3g - 15.961g) / (14.3g) * 100 = 11.6% error. 5.) The volume of the metal is obtained by subtracting the volume of the water from the combined volume of the water and the metal. 23mL - 16mL = 7mL volume for the metal. The mass of the metal is attained by subtracting the mass of the cylinder and water from the mass of the cylinder, water, and metal. ...read more.


The class average is 8.54 g/mL. This value comes closest to the density of nickel. Our group's density come closest to that of antimony. 8.) The percent error of our density: (8.9 - 8) / (8.9) * 100 = 11.25% error The percent error for the class' density (8.9 - 8.54) / (8.9) * 100 = 4.04% error. The class average density has a much lower percent error than our own group's. Extensions: 1.) Marie and Jason were precise with their measurements, but not accurate. Their average density was 2.83g/mL. Their experimental error was such: (2.4 - 2.83) / (2.4) * 100 = 17.9% error. Their uncertainty was such: (�0.01 / 2.83) * 100 = 0.353% uncertainty. 2.) When cutting legs off a table, precision is always better than accuracy. When precise, the same amount from each table leg will be cut, keeping the table even. The accuracy, though, can only be determined if the measurement is already know. Zachary May 9-4-01 5th ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Classifying Materials section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Classifying Materials essays

  1. Iron Oxalate Lab

    Materials; Part 1; Hydrated salt of Fe(NH4)2SO4 * 6H2O 150 ml beaker, distilled water, weighing boat, 1M oxalic acid, 6M H2SO4, Hydrogen Peroxide, 95% ethanol, Aluminum Foil, Buchner Funnel, Hot plate, 1.8M potassium oxalate solution 1 M H2C2O4 Part 2; permanganate solution, sulfuric acid, tongs, beaker, 250 ml Erlenmeyer flask

  2. Sludge Test Lab Report.

    Set up distillation apparatus and fractionally distill the liquid. Record all observations. Mass the test tube with the boiling chips to see if anything else precipitated. Record all observations. Attempt to identify all of the substances. On our first observation of the sludge the liquid was orange and smelled of alcohol.

  1. The purpose of this lab was to differentiate between accuracy and precision by calculating ...

    Observations: Dimensions & Mass of Beaker, Mass of Liquid, and Volume of Liquid in Graduated Cylinder. Trial 1 Trial 2 Trial 3 Height of beaker 4.9 4.8 4.9 Radius of beaker 2.25 2.25 2.25 Mass of empty beaker 50.86 g 50.16 g 52.65 g Mass of beaker + Liquid 120.73

  2. Free essay

    Periodic table

    Binary Fission - when an atom is split into two or more smaller nuclei. For example when splitting uranium - neutrons are fired at the radioactive uranium this causes the nuclei to split and form two new elements - this then releases neutrons, radiation and heat.


    Materials: 1. Pot pan and lid 9. Tissue paper 2. 1 portable cooking heater 3. 1 sieve 4. Water from the tap 5. Recording sheet 6. Electronic weight scale 7. 1 packet of spaghetti of the same brand 8. Timer or stopwatch Method: 1.

  2. Potassium Iodine Lab Report

    R 7. Add 5 to 7 grams of K2SO4 to beaker A. 8. Mass beaker A on three different centigram balances. R 9. Determine the mass of a piece of filter paper on three different centigram balances. R 10. Using a graduated cylinder, add 37 � 1 ml of distilled water to beaker A.

  1. The role of mass customization and postponement in global logistics

    Any elicitation process is an artful means of leading customers through the process of identifying exactly what they want. The emergence of Customer Relationship Management (CRM) can aid the firm in the elicitation task. Computers are becoming extremely useful in the elicitation of information like physical movements in Apparel Industry, prototypes in house construction, etc.

  2. Specific Heat Lab

    the specific heat of Steal we have to reorder mh2och2o(Ti-Te)metal=mmetalcmetal(Ti-Te)metal to: cmetal= (mh2o*ch2o*(Ti-Te)h2o)/(mmetal*(Ti-Te)metal) cmetal= (.40005*4180*1.10)/(.04945*80.00) cmetal= (1839.4299)/(3.956) cmetal= 464.97 To find the percentage error for our specific heat we use the following formula: |Accepted Value - Our Value | / (Accepted Value * 100)

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work