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Name ___________________________________________ Period _____ Date _____________________REVIEWScientific Method, Metric System, Lab Safety1. Be able to identify the steps involved in the scientific method.State the problemTest the hypothesisGather informationRecord and analyze dataState a hypothesisForm a conclusion2. Be able to identify the steps if given an experiment to read through.3. Identify the basic parts of the metric system. Know the definition, unit, and how each is measured:MASSVOLUMELENGTHTEMPERATURE4. Know how to measure mass, volume of a liquid, volume of a regular and irregular solid, and read a thermometer.5. Know accepted safety practices.6. Know the steps to performing a lab experiment.7. Be able to perform metric conversions using the prefixes kilo-, hecto-, deka-, deci-, centi-, and milli-. 8. Be able to write number in scientific notation and take number out of scientific notation.Review WorksheetI. Scientific Method: Read the following statements and then answer the questions.A. Mrs. Brim wants to find out why sea water freezes at a lower temperature than fresh water.B. Mrs. Brim goes to the media center and reads a number of articles about the physical properties of solutions. She also reads about the composition of sea water.C. She also travels to a nearby beach and observes the conditions there.D. After considering all this information, Mrs. Brim sits at a desk and writes, My guess is that sea water freezes at a lower temperature than fresh water because sea water has salt in it.E. She goes to her classroom lab and does the following:1. Fills each of two beakers with 1 liter of fresh water.2. Dissolves 35 grams of table salt into one of the beakers.3. Pleases both beakers in a refrigerator whose temperature is -1°C.4. Leaves the beakers in the refrigerator for 24 hours.F. After 24 hours, Mrs. Brim takes the beakers out of the refrigerator and looks at them. She finds that the fresh water beaker is frozen and the salt water is still liquid.G. She writes in her notebook, It appears as if the salt water freezes at a lower temperature than fresh water does.H. She continues, “Therefore, the reason sea water freezes at a lower temperature is that sea water contains dissolved salts while fresh water does not.Questions:Place the letter corresponding to the correct statement in the blank.1. Which statement contains the CONCLUSION? 2. Which statement refers to GATHERING INFORMATION? 3. Which statement contains the HYPOTHESIS? 4. Which statement contains the TEST OF THE HYPOTHESIS? 5. In which statement is the PROBLEM defined? 6. Which statement contains the DATA in the experiment? II. Answer the following questions on metric units.DEFINITIONUNITEQUIPMENT USED TO MEASURE ITMASSVOLUMELENGTHTEMPERATUREIII. Look at the following pictures and state one unsafe laboratory procedure:a.b. List the number one rule for doing labs. The list two others from the notes.Metric Conversions – determine the correct metric conversion and place your answer in the blank provided.a. 10 cL = ______________ mLb. 25 kg = ______________ gc. 5 g = _________________ mgd. 1mL = ________________ cLe. 1 cL = _______________ dLf. 1 dL = _______________ LVIII. Solve the following problem showing all work, the formula, and correct units.The density of oak is known to be 1.75g/cm3. The mass of the oak pieces is 1250g. What is the volume of the oak?A block of lead has dimensions of 4.50 cm by 5.20 cm by 6.00 cm. The block weighs 1587 g. From this information, calculate the density of lead.IX. Scientific Notation. If the number is in scientific notation, make it a regular number and vice versa.4.56 x 10-4 m = _______________________________3.33 x 102 cL = _______________________________0.000523 km = _______________________________6000mg = _______________________________X. Making MeasurementsExplain how to measure the volume of marble using what you have learned in this class. ................
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