Comparing chemicals. Schoolboy holding up test tubes containing solutions of copper sulphate (CuSO4,right,blue) and sodium hydroxide (NaOH,left,clear). Copper sulphate is a soluble crystalline salt. Sodium hydroxide is highly alkaline,and is a common laboratory reagent | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Andrew Lambert Photography |
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