Talc has a soapy feel.
Also, gypsum can scratch talc, but talc cannot scratch gypsum.
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Answer:
B. Talc has soapy feel.
Explanation:
Gypsum is a hydrated calcium sulphate mineral .
The chemical formula of gypsum is [tex] CaSO_4.2H_2O[/tex]
It consist of calcium, sulphur, oxygen and hydrogen.
It is soft sulphate mineral. It is used in plaster formation. It is used in blackboard chalk formation.It is used as a fertilizer.It Talc can not scratch gypsum because it is harder than talc.It has no soapy feel.
Talc is hydrous magnesium silicate mineral . It is usually green ,gray, white , brown or colourless.It is a translucent mineral . It has pearly luster.
It is soften known mineral. The chemical formula of talc is [tex]Mg_3Si_4O_{10}(OH)_2[/tex].It consist of magnesium, silicon, oxygen and hydrogen.It has extreme softness and greasy. It has soapy feel. Gypsum is harder than talc and more difficult to scratch.
Hence, the option B is true.
Answer: B. Talc has soapy feel.
