Laboratory Techniques for Grade 7 PDF
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Uploaded by LikableBongos
Jessie Ruiz
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Summary
This presentation covers laboratory techniques for seventh-grade science class. Topics include safety procedures and the proper use of glassware including beakers, graduated cylinders, and test tubes. It also explains techniques for measuring volume and mass, separation techniques like filtration and evaporation, and heating and cooling methods.
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Laboratory Techniques for Grade 7 This presentation will guide you through the essential laboratory techniques you'll need in your 7th-grade science class. by Jessie Ruiz Introduction to Laboratory Safety Safety Rules Emergency Procedures Always fol...
Laboratory Techniques for Grade 7 This presentation will guide you through the essential laboratory techniques you'll need in your 7th-grade science class. by Jessie Ruiz Introduction to Laboratory Safety Safety Rules Emergency Procedures Always follow your teacher's instructions. Wear safety Know where the fire extinguisher and first-aid kit are goggles to protect your eyes. Wash your hands after located. Report any accidents or spills immediately. handling chemicals. Proper Use of Glassware and Equipment Beakers Graduated Cylinders Test Tubes Used for holding and mixing Used to measure the volume of Used for holding and heating liquids, not for precise liquids accurately. small amounts of liquids and measurements. solutions. Measuring Volume and Mass Volume Mass Measured in milliliters (mL) Measured in grams (g) using a using graduated cylinders and balance scale. beakers. Filtration and Separation Techniques 1 Filtration Used to separate a solid from a liquid. 2 Evaporation Used to separate a dissolved solid from a liquid by heating. 3 Decantation Used to separate a solid from a liquid by carefully pouring off the liquid. Heating and Cooling Methods Bunsen Burner Used to heat substances and provide a flame for experiments. Hot Plate Used to heat substances that require a controlled temperature. Ice Bath Used to cool substances quickly. Identification of Unknown Substances 1 2 Smell Appearance Some substances have a distinctive Observe the color, shape, and smell that can help identify them. texture of the substance. 3 pH Use a pH meter or litmus paper to determine the acidity or alkalinity. Conclusion and Key Takeaways You've learned about key laboratory techniques, from safety procedures to identifying unknown substances. Remember to always be careful and follow your teacher's instructions. Keep practicing these skills, and you'll become a confident and skilled young scientist.
