i need help with a protocol and a hypthesis please:)

THE 10 mL TRANSFER OBJECTIVES: Use the steps of the scientific method to study a problem. Become familiar with equipment, proper measurement techniques and data processing used in a chemistry laboratory. INTRODUCTION: Asking and answering questions about nature is the realm of scientists. Most scientists use an organized, repeatable process, known as the scientific method, to study and solve problems. The scientific method consists of the following steps: Ask a Question Do Background Research . Construct a Hypothesis Test Your Hypothesis by Doing an Experiment Analyze Your Data and Draw a Conclusion Communicate Your Results The scientist begins by posing a reasonable question or problem about which he/she hopes to learn some useful information. The scientist then researches the question to see what facts are already known. Then he/she proposes a hypothesis that summarizes these facts and/or predicts the outcome of the exploration. Next, the scientist designs and performs experiments to collect data that will test the hypothesis. Data can be either qualitative or quantitative. Non- numerical observations made using the five senses (note that taste is rarely used in a chemistry laboratory!) are considered qualitative data. Numerical values such as measurement values are considered to be quantitative data. The scientist analyzes the data from repeated experiments to find reproducible patterns that will support the hypothesis. If the data supports the hypothesis, the scientist draws a conclusion and proposes a theory that explains the data and answers the initial question. If the data does not support the hypothesis, it can be revised, and the process is repeated. The most common item used by chemists to document their experimental work is a laboratory notebook. All procedural steps, data and observations are recorded in the notebook, producing a permanent, accurate record of what occurred. Numerical values are recorded with the correct units and to the proper number of significant figures. Observations are thorough, detailed and descriptive. Entries are made in ink, directly into the notebook as the experiment is performed. Data must never be written on scratch paper and copied into the notebook later! A well-written notebook becomes an invaluable tool when preparing to communicate the results. In this course the results are usually communicated by writing a laboratory report after the experiment has been completed, using the information documented in the laboratory notebook MATERIALS and EQUIPMENT: All items in the student locker, the laboratory and the balance room. Pipet pump 25 ml buret THE 10 mL TRANSFER PRELABORATORY QUESTIONS: None EXPERIMENTAL PROCEDURE: The instructor will assign students to groups. Each group will develop a written, detailed protocol that uses the scientific method to solve this problem: which piece of calibrated glassware (choices will be provided by the instructor) will most accurately transfer 10 mL of deionized water into a beaker? The group protocol must include all procedural steps as well as instructions for all needed calculations. Samples of the calculations should also be included Once the instructor approves the protocol, cach group will perform its experiment. All procedural steps and data will be directly entered into the student's laboratory notebook. A formal laboratory report (more information to follow from your instructor) will be written after the experiment is completed. GUIDING QUESTIONS: Use these guiding questions to help design the experiment protocol. It is most helpful to answer the questions completely and discuss the answers with all group members before beginning to design the protocol. 1. What is/are the difference(s) between accurately transferring 10.00 mL of water and precisely transferring 10.00 mL of water? 2. The goal of this experiment is to select the measuring device that will most accurately transfer 10.00 mL of water. Should this measuring device also be precise? If so, how will you establish the precision of the device? 3. Which physical property of water must be used to solve this problem? 4. What piece of laboratory equipment will your group use to collect data for all measuring devices? 5. Is the instrument that most accurately contains 10.00 mL of water the one that will most accurately transfer mL of water? 6. Will the temperature of the water affect the results of the experiment? 7. How will your group minimize differences caused by individual techniques? 8. How will you determine the correct number of significant figures for your measurements? 9. What calculations will you need to do once the data has been collected? 10. What data/information will you use to draw a conclusion? POSLABORATORY QUESTIONS: None REFERENCES: Written by Eileen DiMauro. Revised 7/22/17