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Chemistry QUIZ.docx - Chemistry is the science of matter...

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Chemistryis the science of matter and the changes it undergoes during chemical reactions. It is more on thecomposition, behavior, structure and properties of matter.Origins of the term ChemistryArab Latinized word ”Keme” meaning “value”“value” Egyptian word” khemia” meaning “transmutation of earth”Khymei” meaning art of alloying metal”The first chemical reaction that was used in controlled manner was FIRE.ALCHEMY TO CHEMISTRYAlchemy is a practice associated with mysticism and protoscience.People were looking for methods for finding miraculous cure for diseases during ancientEuropean times.Alchemist also known as gold cooks believed to have powers that science can’t explainAlchemist were believe to have ability to:Turn base metals to goldFind cure for the Bubonic PlagueProduce medicine that will improve lifeSCIENTIFIC METHODUsed in all science fields, from biology to physics and chemistry, the scientific method allows researchesand scientists to test their theories in a standard manner that is uniform to everyone globallyOne of the main advantages of the scientific method is repeatabilityit allows others the ability to replicate the experiment and accept the hypothesis widely.The 7 steps of the scientific method
1. Question: identifying the problem. What information is unknown or missing.2. Research: information about the problem. What is already known and what isn't.3. Hypothesis: prediction or an educated guess of a possible outcome.4. Experiment: testing the hypothesis.5. Observation: data collected while performing the experiment. All crucial details that can have even aminimal impact on the outcome or the question of the original problem.6. Result/Conclusion: determining if the hypothesis is correct and what impacted the outcome7. Communicate: presenting the result and date through various media, usually a lab report.Significant FiguresThe significant figures in a number are those the give reasonably reliable information and include thedigits that are certain, plus one estimated digit of the measurementThe following are rules used to determine that number of significant digits in measurement.

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