TEXES SCIENCE 4-8 TEST 116|UPDATED&VERIFIED|100% SOLVED|GUARANTEED SUCCESS

Right to Know Law Employees must be informed of potentially toxic chemicals MSDS Material Safety Data Sheet OSHA Occupational Safety and Health Association Total Magnification Combined total of ocular lens multiplied by the objective lens Chromatography The use of capillary action to separate substances Spectrophotometry A tool that gives qualitative data a quantitative or measurable value Why should tap water be avoided in experiments? It contains dissolved particles that could effect the outcome Where should chemicals be stored In a secure, dry area Should acids be stored with or without chemicals? Without How are chemicals stored? By their chemical reactivity What three classes of signs are important to labs? Diamond Safety Signs, Prohibitive Signs, and Triangle Danger Signs What does and MSDS include information on? A chemicals; physical data, toxicity, health effects, first aid, reactivity, storage, disposal, protective gear, and spill/leak procedures. Why should hot plates be used instead of bunsen burners? To avoid the risk of burns or fires. What is hooke's Law? An equation that describes elasticity Who was Hooke's Law named after? Robert Hooke What was Robert Hooke's greatest accomplishment? He devised the compound microscope and illumination system. What was the name of Robert Hooke's book? Micrographia What are two reasons there would be uncertainty in an experiment? A random error or a systematic error A __________ error would be caused due to a limit on the measuring device. Random A ____________ error would be caused due to the design of the experiment. Systematic Deca 10x Hecto 100x Kilo 1000X Deci 1/10 Centi 1/100 Milli 1/1000 In a line graph the X axis represents the ________ variable whereas the Y axis represents the ______ variable. Dependent, Independent What is an example of measurement that the X axis would represent? Time What are the 5 W's to a descriptive study? And the additional question? Who, What, When, Where, Why, and So What When would you use a descriptive study? To investigate new areas of scientific inquiry What is always included in a controlled experiment? A control group What is the term used to describe when you gain insight on a subject from data that primarily uses graphic representation? Comparative data analysis Who was famous for discovering the most accurate and anatomically correct dissections of the human body? Andreas Vesalius Who is the Father of Microscopy? Anton Van Leeuwenhoek What does SEM stand for? Scanning Electron Microscope What is a disadvantage to using a SEM? The methods used to prepare slides often damage the specimen. What did Leeuwenhoek study? He was the first to see and describe bacteria, yeast plants and microscopic life in water What are used to find precise measurements? Graduated Cylinders You should always use _________ under a substance when working with a ___________. Paper, Balance