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4th Review Sheet for Lab Safety, Scientific Method and the Metric System (Ms. Chan 07/08) Please write your answers in full sentences. I. Lab safety What is the most important lab safety rule? What is the first thing you should do if you get hurt? What should you do after you finish your experiment? Is horseplay allowed in the lab? Why? Who should you go to for directions in the lab? II. The Scientific Method (For reference you may see pages 216-217 in your textbook. However all of the information you need to know is listed here.) List the steps of the scientific method. Then, note what you should do in that step and why it is important. 1. ___________________________ - 2. ___________________________ - 3. ___________________________ - 4. ___________________________ - 5. ___________________________ - 6. ___________________________ - III. The Metric System (For reference, you may use pages 214-215 in your text, your notes and the review table. This guide and your notes will be your best resources.) Be able to predict measurements and make measurements using these units. Length: DefinitionThe tool to measure length: The unit used for length is: 1 m = ___________ cm 1 m = ___________ mm 2 m = ___________ mm 300 cm = __________ m The length of this line is ______ cm. You may round to the nearest cm. Area: Definition – The formula to find area is: Length of this box: Width of this box: Area of this box: Volume: Definition – The formula to find volume using a ruler is: The unit for volume using the formula is: The instrument for finding liquid volumes is the: The unit for liquid volumes is: 1 L = ______________ mL mL are used for: Temperature: Definition – The tool to measure temperature is: The scale we use for temperature is: Water boils at: Water freezes at: Mass: Definition – The tool to measure mass is called the: The unit to measure mass is: Density: Definition – We find density by combining two other measurements, _______________ and __________________. The unit for density is ___________. The density of water is: An object will _______________ in water if its density is less than 1gm/cm3. An object will _______________ in water if its density is more than 1gm/cm3. +/- means: If my prediction for mass was 80g and the measurement for mass was 75g. is________g.