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chemsir-talking-chemistry · 3 years

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[Electroplating] Do you know how to plate a layer of copper on the surface of a metal key?🤔

【電鍍】你知道如何鍍一層銅在金屬鎖匙的表面嗎？🤔

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👍Please like, comment and share @chemsir.talking.chemistry and tag your friends.

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👉Follow @chemsir.talking.chemistry and @chemsir_lee_wai_hon for more chemistry materials.

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🙏Thank you for your support. Wish you enjoy the page!

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Source: internet

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#chemsir #chemistry #化學 #chemsirtalkingchemistry #chemsir同你講化學 #科學 #chem #science #dse #hkdse

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chemsir-talking-chemistry · 3 years

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Have you come across with the pH scale?🤔 ------------------------------------------------------------------------ 👍Please like, comment and share @chemsir.talking.chemistry and tag your friends. ------------------------------------------------------------------------ 👉Follow @chemsir.talking.chemistry and @chemsir_lee_wai_hon for more chemistry materials. ------------------------------------------------------------------------ 🙏Thank you for your support. Wish you enjoy the page! ------------------------------------------------------------------------ Source: @benznote A nice picture! Thank you! ------------------------------------------------------------------------ #ChemsirTalkingChemistry #chem #chemistry #science #pH #pHScale #pHValue #pHValues #acid #acids #alkali #alkalis #acidic #alkaline #AcidsAndAlkalis #chemistrylover #chemistrylovers #chemistryaddict #chemistryaddicts #hkdse #dse #Chemsir同你講化學 #化學 #科學 #pH標度 #pH值 #酸 #鹼 #酸鹼 #Chemsir https://www.instagram.com/p/CN2FFIbhzOL/?igshid=dhq0g3fe3frf

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chemsir-talking-chemistry · 3 years

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Hydrazine (N₂H₄) is a colourless, flammable liquid with an ammonia-like odour. It is commonly used as a fuel for rockets and a propellant in spacecrafts. ------------------------------------------------------------------------ 👍Please like, comment and share @chemsir.talking.chemistry and tag your friends. ------------------------------------------------------------------------ 👉Follow @chemsir.talking.chemistry and @chemsir_lee_wai_hon for more chemistry materials. ------------------------------------------------------------------------ 🙏Thank you for your support. Wish you enjoy the page! ------------------------------------------------------------------------ #ChemsirTalkingChemistry #chem #chemistry #science #hydrazine #N2H4 #StructuralFormula #StructuralFormulae #electrons #electron #ammonia #propellant #spacecraft #spacecrafts #CovalentBonds #CovalentBond #chemistrylover #chemistrylovers #chemistryaddict #chemistryaddicts #hkdse #dse #Chemsir同你講化學 #化學 #科學 #聯氨 #氨 #結構式 #電子 #Chemsir https://www.instagram.com/p/CIuva8thVXw/?igshid=1m3p1livpw6c0

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chemsir-talking-chemistry · 4 years

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Do you know how to extract copper from copper(II) oxide in the laboratory? 😆 ------------------------------------------------------------------------ 👍Please like, comment and share @chemsir.talking.chemistry and tag your friends. ------------------------------------------------------------------------ 👉Follow @chemsir.talking.chemistry and @chemsir_lee_wai_hon for more chemistry materials. ------------------------------------------------------------------------ 🙏Thank you for your support. Wish you enjoy the page! ------------------------------------------------------------------------ #ChemsirTalkingChemistry #chem #chemistry #science #experiment #copper #Cu #Copper(II)Oxide #CopperOxide #CuO #extraction #extract #MetalExtraction #CarbonReduction #chemistrylover #chemistrylovers #chemistryaddict #chemistryaddicts #hkdse #dse #Chemsir同你講化學 #化學 #科學 #Chemsir做實驗 #銅 #氧化銅 #氧化銅II #金屬提取 #碳還原 #Chemsir https://www.instagram.com/p/CGZ8WXcBpNn/?igshid=bvxab04ftpag

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chemsir-talking-chemistry · 3 years

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[M.C. Challenge] Iron reacts with dilute hydrochloric acid to produce A. oxygen. B. chlorine. C. iron(II) chloride. D. iron(III) chloride. 🤔 👆Choose the best answer.👆 ------------------------------------------------------------------------ 👍Please like, comment and share @chemsir.talking.chemistry and tag your friends. ------------------------------------------------------------------------ 👉Follow @chemsir.talking.chemistry and @chemsir_lee_wai_hon for more chemistry materials. ------------------------------------------------------------------------ 🙏🏻Thank you for your support. Wish you enjoy the page! ------------------------------------------------------------------------ #ChemsirTalkingChemistry #chem #chemistry #science #ChemsirMCChallenge #iron #Fe #DiluteHydrochloricAcid #HydrochloricAcid #HCl #metal #2021dse #2022dse #2023dse #hkdse #dse #dsefighter #dse2021 #dse2022 #dse2023 #Chemsir同你講化學 #化學 #科學 #鐵 #稀氫氯酸 #稀鹽酸 #氫氯酸 #鹽酸 #金屬 #Chemsir https://www.instagram.com/p/CHH-h08BLHK/?igshid=q3p6r445q3or

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chemsir-talking-chemistry · 3 years

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[M.C. Challenge] What is the empirical formula of hydrazine ? A. NH₂ B. NH₃ C. N₂H₃ D. N₂H₄ 🤔 👆Choose the best answer.👆 ------------------------------------------------------------------------ 👍Please like, comment and share @chemsir.talking.chemistry and tag your friends. ------------------------------------------------------------------------ 👉Follow @chemsir.talking.chemistry and @chemsir_lee_wai_hon for more chemistry materials. ------------------------------------------------------------------------ 🙏🏻Thank you for your support. Wish you enjoy the page! ------------------------------------------------------------------------ #ChemsirTalkingChemistry #chem #chemistry #hydrazine #N2H4 #EmpiricalFormula #StructuralFormula #StructuralFormulae #ammonia #chemistrylover #chemistrylovers #chemistryaddict #chemistryaddicts #2021dse #2022dse #2023dse #hkdse #dse #dsefighter #dse2021 #dse2022 #dse2023 #Chemsir同你講化學 #化學 #科學 #聯氨 #氨 #實驗式 #結構式 #Chemsir https://www.instagram.com/p/CI2-osbBIZH/?igshid=c84awhpvb9f4

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chemsir-talking-chemistry · 4 years

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[M.C. Challenge] What is the chemical formula of quicklime? A. Ca B. CaO C. CaCO₃ D. Ca(OH)₂ 🤔 ------------------------------------------------------------------------ 👍Please like, comment and share @chemsir.talking.chemistry and tag your friends. ------------------------------------------------------------------------ 👉Follow @chemsir.talking.chemistry and @chemsir_lee_wai_hon for more chemistry materials. ------------------------------------------------------------------------ 🙏🏻Thank you for your support. Wish you enjoy the page! ------------------------------------------------------------------------ #ChemsirTalkingChemistry #chem #chemistry #science #ChemsirMCChallenge #CalciumOxide #CaO #CalciumCarbonate #CaCO3 #limestone #quicklime #SlakedLime #limewater #2021dse #2022dse #2023dse #hkdse #dse #dse2021 #dse2022 #dse2023 #Chemsir同你講化學 #化學 #科學 #生石灰 #熟石灰 #氧化鈣 #碳酸鈣 #電子 #Chemsir https://www.instagram.com/p/CFl_JFihzpP/?igshid=vatll27vnxnr

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chemsir-talking-chemistry · 3 years

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[Chemistry Drama] When a Carbon Atom Meets an Oxygen Atom Carbon: I have 4 outermost shell electrons. I want 4 more.😃 Oxygen: I have 6 outermost shell electrons. I just want 2 more.😊 Carbon: Sorry that we cannot share our electrons equally. Oxygen: Never mind. It's my pleasure to donate a lone pair of electrons to you. Carbon: You treat me so well. Are you dating me actually?🤔 Oxygen: Just to form a dative covalent bond.😂 ------------------------------------------------------------------------ 👍Please like, comment and share @chemsir.talking.chemistry and tag your friends. ------------------------------------------------------------------------ 👉Follow @chemsir.talking.chemistry and @chemsir_lee_wai_hon for more chemistry materials. ------------------------------------------------------------------------ 🙏🏻Thank you for your support. Wish you enjoy the page! ------------------------------------------------------------------------ #ChemsirTalkingChemistry #chem #chemistry #science #ChemistryDrama #CarbonMonoxide #CO #SharingOfElectrons #ElectronDiagrams #ElectronDiagram #DotAndCrossDiagram #CovalentBonds #CovalentBond #DativeCovalentBond #LonePair #chemistryisfun #chemistryfun #chemistrylover #chemistrylovers #chemistryaddict #chemistryaddicts #hkdse #dse #Chemsir同你講化學 #化學 #科學 #化學劇場 #一氧化碳 #電子結構圖 #Chemsir https://www.instagram.com/p/CHP0oLvhFQY/?igshid=q5uq778t1hin

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chemsir-talking-chemistry · 3 years

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Do you notice that there is a dative covalent bond in a carbon monoxide molecule?🤔 ------------------------------------------------------------------------ 👍Please like, comment and share @chemsir.talking.chemistry and tag your friends. ------------------------------------------------------------------------ 👉Follow @chemsir.talking.chemistry and @chemsir_lee_wai_hon for more chemistry materials. ------------------------------------------------------------------------ 🙏Thank you for your support. Wish you enjoy the page! ------------------------------------------------------------------------ #ChemsirTalkingChemistry #chem #chemistry #science #CarbonMonoxide #CO #SharingOfElectrons #electrons #electron #ElectronDiagrams #ElectronDiagram #DotAndCrossDiagram #ElectronicStructure #octet #CovalentBonds #CovalentBond #DativeCovalentBond #chemistrylover #chemistrylovers #chemistryaddict #chemistryaddicts #hkdse #dse #Chemsir同你講化學 #化學 #科學 #一氧化碳 #電子結構圖 #電子 #Chemsir https://www.instagram.com/p/CHK0PM1BJUw/?igshid=sb9y8zwlyy6u

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chemsir-talking-chemistry · 3 years

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A silvery zinc strip turns brown after being placed in copper(II) nitrate solution. Do you know why?🤔 ------------------------------------------------------------------------ 👍Please like, comment and share @chemsir.talking.chemistry and tag your friends. ------------------------------------------------------------------------ 👉Follow @chemsir.talking.chemistry and @chemsir_lee_wai_hon for more chemistry materials. ------------------------------------------------------------------------ 🙏Thank you for your support. Wish you enjoy the page! ------------------------------------------------------------------------ #ChemsirTalkingChemistry #chem #chemistry #science #experiment #copper #Cu #zinc #Zn #CopperIINitrate #CopperNitrate #displacement #DisplacementReaction #chemistrylover #chemistrylovers #chemistryaddict #chemistryaddicts #hkdse #dse #Chemsir同你講化學 #化學 #科學 #Chemsir做實驗 #銅 #鋅 #硫酸銅 #硫酸銅II #金屬 #置換反應 #Chemsir https://www.instagram.com/p/CG4naOaBHig/?igshid=1kfh9hmtj9gbz

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chemsir-talking-chemistry · 4 years

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[M.C. Challenge] Which of the following metals can be extracted by heating metal oxide with carbon (i.e. carbon reduction)? A. sodium B. magnesium C. zinc D. aluminium 🤔 Choose the best answer👆 🤔 ------------------------------------------------------------------------ 👍Please like, comment and share @chemsir.talking.chemistry and tag your friends. ------------------------------------------------------------------------ 👉Follow @chemsir.talking.chemistry and @chemsir_lee_wai_hon for more chemistry materials. ------------------------------------------------------------------------ 🙏🏻Thank you for your support. Wish you enjoy the page! ------------------------------------------------------------------------ #ChemsirTalkingChemistry #chem #chemistry #science #ChemsirMCChallenge #extraction #extract #MetalExtraction #CarbonReduction #metal #elements #element #2021dse #2022dse #2023dse #hkdse #dse #dsefighter #dse2021 #dse2022 #dse2023 #Chemsir同你講化學 #化學 #科學 #教育 #金屬提取 #碳還原 #金屬 #元素 #Chemsir https://www.instagram.com/p/CGhhKVwBt0c/?igshid=1gbjlz3ludnpc

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chemsir-talking-chemistry · 4 years

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Hello, I am quicklime.😁 ------------------------------------------------------------------------ 👍Please like, comment and share @chemsir.talking.chemistry and tag your friends. ------------------------------------------------------------------------ 👉Follow @chemsir.talking.chemistry and @chemsir_lee_wai_hon for more chemistry materials. ------------------------------------------------------------------------ 🙏Thank you for your support. Wish you enjoy the page! ------------------------------------------------------------------------ Source: @the_sketchy_sketcher A nice picture! Thank you! ------------------------------------------------------------------------ #ChemsirTalkingChemistry #chem #chemistry #science #CalciumOxide #CaO #limestone #quicklime #SlakedLime #limewater #chemistrymeme #chemistrymemes #chemistryisfun #chemistryfun #chemistrylover #chemistrylovers #chemistryaddict #chemistryaddicts #chemistryjoke #chemistryjokes #hkdse #dse #dsefighter #Chemsir同你講化學 #化學 #科學 #生石灰 #熟石灰 #氧化鈣 #Chemsir https://www.instagram.com/p/CFjpZPEhZuG/?igshid=saeocbkzjivc

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chemsir-talking-chemistry · 4 years

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Did you learn the 'lime cycle' before?🤔 The lime cycle talks about the chemical reactions involving calcium carbonate (CaCO₃).😁 ------------------------------------------------------------------------ 👍Please like, comment and share @chemsir.talking.chemistry and tag your friends. ------------------------------------------------------------------------ 👉Follow @chemsir.talking.chemistry and @chemsir_lee_wai_hon for more chemistry materials. ------------------------------------------------------------------------ 🙏Thank you for your support. Wish you enjoy the page! ------------------------------------------------------------------------ Source: @sepahanlime A nice picture! Thank you! ------------------------------------------------------------------------ #ChemsirTalkingChemistry #chem #chemistry #science #decomposition #LimeCycle #lime #CalciumCarbonate #CaCO3 #limestone #quicklime #SlakedLime #limewater #chemistryisfun #chemistryfun #chemistrylover #chemistrylovers #chemistryaddict #chemistryaddicts #hkdse #dse #Chemsir同你講化學 #化學 #科學 #分解 #生石灰 #熟石灰 #石灰水 #碳酸鈣 #Chemsir https://www.instagram.com/p/CFhSWfmBfnT/?igshid=vk6sq4zt8ndg

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chemsir-talking-chemistry · 4 years

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Do you notice that both ionic bonds and covalent bonds are present in the structure of the ionic compound ammonium chloride (NH₄Cl)? 😂 ------------------------------------------------------------------------ 👍Please like, comment and share @chemsir.talking.chemistry and tag your friends. ------------------------------------------------------------------------ 👉Follow @chemsir.talking.chemistry and @chemsir_lee_wai_hon for more chemistry materials. ------------------------------------------------------------------------ 🙏Thank you for your support. Wish you enjoy the page! ------------------------------------------------------------------------ Source: Internet ------------------------------------------------------------------------ #ChemsirTalkingChemistry #chem #chemistry #science #IonicBonds #IonicBond #ion #CovalentBonds #CovalentBond #covalent #IonicCompounds #IonicCompound #ionic #AmmoniumChloride #ammonium #chloride #NH4Cl #chemistrylover #chemistrylovers #chemistryaddict #chemistryaddicts #hkdse #dse #Chemsir同你講化學 #化學 #科學 #離子 #離子鍵 #共價鍵 #Chemsir https://www.instagram.com/p/CFHXM03hUKQ/?igshid=1k8avnbzxq7ls

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chemsir-talking-chemistry · 4 years

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[M.C. Challenge] How many neutrons are there in a lithium-7 atom? A. 3 B. 4 C. 6 D. 7 🤔 ------------------------------------------------------------------------ 👍Please like, comment and share @chemsir.talking.chemistry and tag your friends. ------------------------------------------------------------------------ 👉Follow @chemsir.talking.chemistry and @chemsir_lee_wai_hon for more chemistry materials. ------------------------------------------------------------------------ 🙏🏻Thank you for your support. Wish you enjoy the page! ------------------------------------------------------------------------ #ChemsirTalkingChemistry #chem #chemistry #science #ChemsirMCChallenge #lithium #Li #proton #neutron #electron #nucleus #atom #element #2021dse #2022dse #hkdse #dse #dsefighter #dse2021 #dse2022 #HongKong #Chemsir同你講化學 #化學 #科學 #質子 #中子 #電子 #原子核 #原子 #Chemsir https://www.instagram.com/p/B_rDPyGhzm5/?igshid=1e0l31ht3jblr

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chemsir-talking-chemistry · 4 years

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Welcome to ‘Chemsir.talking.chemistry’! This page is a magazine about chemistry education. It is managed by a low-profile Hong Kong chemistry teacher, Mr. Lee Wai Hon, Chemsir. 歡迎光臨《Chemsir.talking.chemistry》專頁！本專頁是一本化學教育雜誌。管理員為一位作風低調的香港化學科老師李偉瀚 Chemsir。 ------------------------------------------------------------------------ 👍Please like, comment and share @chemsir.talking.chemistry and tag your friends. ------------------------------------------------------------------------ 👉Follow @chemsir.talking.chemistry and @chemsir_lee_wai_hon for more chemistry materials. ------------------------------------------------------------------------ 🙏🏻Thank you for your support. Wish you enjoy the page! ------------------------------------------------------------------------ #ChemsirTalkingChemistry #chem #chemistry #science #education #magazine #ChemistryEducation #STEM #STEAM #2020dse #2021dse #2022dse #hkdse #dse #dsefighter #dse2020 #dse2021 #dse2022 #HongKong #HK #Chemsir同你講化學 #Chemsir用全新形式在網上同大家一齊學習化學 #化學 #科學 #教育 #化學教育雜誌 #香港 #Chemsir https://www.instagram.com/p/B1N0GlBFwE7/?igshid=1a0j48r2o1avf

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