Lab 2: The Chemistry of Life Name _____Aniqa Qureshi_ Insert the chemical symbol in the answer blank for each of the following elements. ___O______ 1. oxygen ___C______ 2. carbon ___K______ 3. potassium ___I______ 4. iodine ___H______ 5. hydrogen ___N______ 6. nitrogen ____Ca_____ 7. calcium ____Na_____ 8. sodium ____P_____ 9. phosphorus ____Mg_____ 10. magnesium ____Cl_____ 11. chloride ____Fe_____ 12. iron In the space below‚ list the chemicals (above) from the MOST
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Comprehensive chemistry practical class XII Acknowledgment: I owe a great many thanks to a great many people who helped and supported me during the project. My deepest thanks to ‚ the guide of the project for guiding and correcting various documents of mine with attention and care. She has taken pain to go through the project and make necessary correction as and when needed. I express my thanks to the principal‚ for extending his support. My deep sense of gratitude to the in charge of chemistry lab at CSE
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Chemistry 12 Review of Solubility Equilibrium 1. Identify each of the following as ionic or molecular substance: a. NaCl(aq) ________________________________ b. CH3COOH(aq) ___________________________ c. CCl4(l) _________________________________ d. HNO3(aq) ______________________________ e. C2H6(l) ________________________________ 2. A good way to test a liquid to see if it contains ions is to : 3. Define a saturated solution. 4. Define an unsaturated solution. 5. What is meant by solubility?
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Ionic Reactions Introduction: Today we are going to observe the chemical changes when mixing two solutions. Some will change colors‚ produce gases proving if the solutions are soluble or insoluble. Materials and Methods: I first pulled out the small wells and place two drops of the Cobalt (II) Nitrate in seven of the wells. I then moved to the next row and placed two drops of Copper (II) Nitrate in the next row‚ into seven of the wells‚ and so on with the other three Nitrates. I then cut off
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Artem Ilyayev Ap Bio 1) An element is to a(n) ___________ as an organ is to a(n) _______________ Answer - b - compound; organism 2) In the term trace element‚ the modifier trace means Answer - a - the element is required in very small amounts. 3) Compared to 31P‚ the radioactive isotope 32P has Answer - b - one more neutron 4) Atoms can be represented by simply listing the number of protons‚ neutrons‚ and electrons - for example‚ 2P+; 2n0; 2e- for helium. Which atom represents the 18O isotope
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AP Chemistry Final Exam Review ESSAY. Write your answer in the space provided or on a separate sheet of paper. 1) Explain the difference between a qualitative and a quantitative measurement. Provide examples to illustrate this difference. Answer: A qualitative measurement is a measurement that gives descriptive‚ nonnumeric results; a quantitative measurement is a measurement that gives definite‚ usually numeric results. "The rock is heavy" would be a qualitative measurement. "The rock weighs 110
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Honors Chemistry Notes Unit 1 • Matter- Anything that has mass and volume and anything that has the property of inertia. -Quantitative. -Can be solid‚ liquid‚ gas. • Inertia- Ability to resist changes in its motion. -Change in motion could be terms of speed or distance. -A car that moves after it has stopped. • Mass- The amount of matter in an object. -The balances that you use in laboratory measure mass‚ not weight. -SI unit is kilogram (kg). • Conservation of Mass- The law states that
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AP Chemistry Analysis of Alum * Purpose: * In this lab we performed several tests to determine if our crystals were actually aluminum potassium sulfate. * Procedures: * Materials: * Chemicals: * Aluminum potassium sulfate‚ 2.5 g * Equipment – Part 1: * 150 mL beaker * Bunsen burner * 2 capillary tubes * Mortar and pestle * Notched stopper to hold thermometer *
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Subject: Chemistry Topic: The Periodic Table The periodic table is a classification of all the elements based on ATOMIC NUMBER. It is composed of HORIZONTAL PERIODS and VERTICAL GROUPS which contain the elements arranged: *the order of INCREASING ATOMIC NUMBER *in the relation to the ELECTRON STRUCTURE of the atoms *in the relation to their CHEMICAL PROPERTIES (Criteria Used For Placing ELEMENTS in the Periodic Table) 1. ATOMIC NUMBER 2. NUMBER OF SHELLS (PERIOD) 3. NUMBER OF OUTER
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CHEMISTRY SAMPLE PAPER - I CLASS - XII Time : Three Hours Max. Marks : 70 General Instructions 1. All questions are compulsory. 2. Question nos. 1 to 8 are very short answer questions and carry 1 mark each. 3. Question nos. 9 to 18 are short answer questions and carry 2 marks each. 4. Question nos. 19 to 27 are also short answer questions and carry 3 marks each 5. Question nos. 28 to 30 are long answer questions and carry 5 marks each 6. Use log tables if necessary‚ use of calculators is
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