PPT-Measurements, The Metric System, AND DENSITY

WHY DO WE USE THE METRIC SYSTEM Almost all other countries are using the metric system Other countries companies are refusing to buy products from the US if not labeled in metric units Scientists need a universal way to communicate data SI Units. Why do scientists need a standard system of measurements?. Remember that science must be . repeatable. – another scientist has to able to repeat your experiment using the same amounts, concentrations, lengths, weights, etc.. Customary and Metric. Warm-Up. Mabel and her mom are going shopping on Saturday. They bought at least one item from each of the 3 departments that they visited. Mabel gave the clerk $120 and she got back $11.76 change. What items did they buy? Think about how much they spent. NO TAX TODAY!. The properties of matter must be measured correctly and reported without ambiguity. . Value- A quantities description that includes both a number and a unit. Units- quantities defined by standards that people have agreed to use to compare one event/object to another. . Long Ago…. . Parts of the human body were often used to measure. The length of the king’s foot or the distance from the tip of his nose to his fingertips were both common units of measurement.. Unit 5. Measurement – Derived Units. Area and volume units (1.10). Density (1.11). Temperature scales and their . interconversion. (1.12). Energy units and their . interconversion. (1.12). Area and Volume Measurements (1.10). Customary. Metric. (Base Unit). International System (SI). Equivalents. Length. inch, foot,. yard, mile. Meter (m). Meter (m). 1m = 3.281ft. 2.54cm. = 1in. Mass. ounce, pound, ton. Gram (g). Kilogram (kg). System of Units. (SI). Learning Targets:. Use appropriate tools and equipment for measuring. . Use the metric system for measuring. . Use the “ladder method” and dimensional analysis to convert values between metric and English units.  . Metric Base Units of Measure.  . Mass = gram (g). Volume = liter . (L). Length = meter (m. ). . Time = second (s).  . Know . your metric prefixes.  . kilo-. Answer the following questions!. You may use your notes from yesterday.. How . many significant figures are in each number?. 1.23. 0.0045. 0.100. 9.001. Write . the following in Scientific Notation.. Physical Science is the study of the things around you. . It has to do with . matter. and . energy. .. What is Matter?. Matter is anything that . takes up space. Can you think of examples of matter?. Mata Kuliah : Perbengkelan . Dosen : Supriyanto, S.TP, M.Kom. English System?. The English system of measurement grew out of the creative way that people measured for themselves.  . Familiar . objects and parts of the body were used as measuring devices.  For example, people measured shorter distances on the ground with their feet.. All scientific measurements are made using the Metric System.. It is also called the SI System (La Systeme International d’Unites). The . United . States is the only major country that does not use this system.. Measurement in Chemistry. In . chemistry we. do experiments. measure quantities. use numbers to report measurements. Metric System (SI). Is a decimal system based on 10. Used in most of the world. Ingredient. Amount. mL. /mg. Instructions: create the nastiest, grossest, most horrendous soup possible. List your ingredient in the first column, the amount of each ingredient (liters/grams) in the second column, and then convert your amount to .