why do hard water never produce foam when a soap is dissolved?
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How is wood charcoal manufactured ?
What is engymes?
Explain the Element?
which gas is used in preaparation of bit salt
why we shrink our body during cold
Distinguish between lime water and milk of lime ?
What is the composition of stainless steel ?
What is positive testing in relation to chemistry? For example, the sentence reads "Sample solutions are solutions known to contain one of each of the following ions, silver ion, Ag+(aq), barium ion, Ba2+(aq), and iron (III) ion, Fe3+(aq). Testing solutions are the solutions containing a polyatomic ion that can react with one of the metal ions to give a positive test." I am then asked to define what a "positive test" is. I am currently a student who is pretty new to chemistry, please try and make your answer as simply as possible. Thanks for the help.
How can you mark your name on a glass plate by a simple chemical method ?
Explain the Valency?
Explain the Solution ?
Which gas is used in bleaching powder.