Chemistry - Section 2
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Indian red (color) Indian red is a pigment composed of naturally occurring iron oxides that is widely used in India.It is Ferric oxide.
Marsh gas is methane, especially as generated by decaying matter in marshes.
Mercury sulfide, mercuric sulfide, mercury sulphide, or mercury(II) sulfide is a chemical compound composed of the chemical elements mercury and sulfur. It is represented by the chemical formula HgS. It is also known as Vermelium.
Talc is a clay mineral composed of hydrated magnesium silicate with the chemical formula H2Mg3(SiO3)4 or Mg3Si4O10(OH)2.
Potassium carbonate is the primary component of potash and the more refined pearl ash or salts of tartar.
Soluble glass is a popular name for sodium silicate or potassium silicate. Sodium silicate is the common name for compounds with the formula Na2(SiO2)nO. A well-known member of this series is sodium metasilicate, Na2SiO3. Also known as waterglass or liquid glass.
Magnesium sulfate is an inorganic salt containing magnesium, sulfur and oxygen, with the formula MgSO₄. It is also known as Bitter Salt.
By 1784, Scheele had shown that “sugar acid” and oxalic acid from natural sources were identical
Calcium sulfate (or calcium sulphate) is the inorganic compound with the formula CaSO4 and related hydrates. In the form of γ-anhydrite (the anhydrous form), it is used as a desiccant. One particular hydrate is better known as plaster of Paris.
Marble is a metamorphic rock that forms when limestone is subjected to the heat and pressure of metamorphism. It is composed primarily of the mineral calcite (CaCO3) and usually contains other minerals, such as clay minerals, micas, quartz, pyrite, iron oxides, and graphite