Question

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Answer 1

3. Gold is used to make jewellery because it is a shiny and soft metal which can design easily and look beautiful after making and polishing it .


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Answer 2

Answer:

hey mate here is ur answer❤☺

1. Reactions

• Potassium metal reacts very rapidly with water to form a colourless solution of potassium hydroxide (KOH) and hydrogen gas (H2). The resulting solution is basic because of the dissolved hydroxide. The reaction is exothermic. (K+H2O=KOH+h2)
• Mg+O2=MgO
• SO2+O2+H2O=H2SO4
• C+O2=CO2
• ZN+2HCl=Zncl2+H2

hope it helps u