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e596d313-9489-42d3-ab3d-59f48e3e57cf Iodine is shiny yet is a non-metal Summary

9d851dde-33ff-409b-97a8-7a3f534c0feb Any reaction or process that consumes heat energy Summary Endothermic

8e91fe7d-48d9-478d-8486-2505ec7ebf28 Dissolving salt into water to make a solution Summary Physical

9c31eef2-81e0-4428-b3e5-8b1df166529a easy examples for Given the average atomic mass of an element, find the % abundance of its isotopes Summary Example 1: Average atomic mass: 15.8 Isotope A mass: 14 Isotope B mass: 16 To find the percentage abundance: Let's assume the abundance of Isotope A is x, and the abundance of Isotope B is y. Equation 1: (x * 14) + (y * 16) = 15.8 Equation 2: x + y = 100 Solving the equations, we find that x = 40 and y = 60. Answer: Isotope A: 40% abundance Isotope B: 60% abundance Example 2: Average atomic mass: 18.9 Isotope A mass: 17 Isotope B mass: 20 To find the percentage abundance: Let's assume the abundance of Isotope A is x, and the abundance of Isotope B is y. Equation 1: (x * 17) + (y * 20) = 18.9 Equation 2: x + y = 100 Solving the equations, we find that x = 30 and y = 70. Answer: Isotope A: 30% abundance Isotope B: 70% abundance Example 3: Average atomic mass: 27.5 Isotope A mass: 26 Isotope B mass: 28 To find the percentage abundance: Let's assume the abundance of Isotope A is x, and the abundance of Isotope B is y. Equation 1: (x * 26) + (y * 28) = 27.5 Equation 2: x + y = 100 Solving the equations, we find that x = 60 and y = 40. Answer: Isotope A: 60% abundance Isotope B: 40% abundance

39ffe242-f6e2-44ab-a7af-5802dcfdfa7c Filtrate Summary The liquid that passes through the filter paper during the filtration process.

7ff8156b-c47a-4cc4-9b63-01c9fca9b123 < Back Previous Next Sulphur Next Topic

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ee6c8690-6da8-486e-aa5f-ffaf8a28663a Cooling Stage Summary The portion of the curve where the substance is being cooled, resulting in a decrease in temperature and average kinetic energy of the particles.

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< Back Group 17 Previous Next 🔬 Chapter 11: Group 17 🔬 Halogens and Their Compounds 🧫: Halogens such as chlorine, bromine, and iodine exist as covalent diatomic molecules. They are oxidizing agents, with fluorine being the strongest and iodine the weakest. Chlorine reacts with cold hydroxide ions in a disproportionation reaction to produce commercial bleach. Chlorine has various industrial uses, including the manufacture of PVC and halogenated hydrocarbons used as solvents, refrigerants, and in aerosols. Chlorination of water with chlorine is important for the prevention of diseases.