What are the common purplish red solids in junior middle school chemistry?

1. copper Cu (purplish red)

2. Iron oxide Fe2O3 (reddish brown)

3. Red phosphorus P (dark red)

4. Iron hydroxide Fe(OH)3 (reddish brown)

5. Potassium permanganate KMnO4 (purplish black)

. Pure copper is a soft metal, its surface is red-orange with metallic luster when it is just cut, and its simple substance is purplish red.

2. ferric oxide, chemical formula Fe2O3. Also known as burning limonite, burning ochre, iron Dan, iron red, red powder, Venice red (mainly composed of iron oxide) and so on. It is soluble in strong acid and medium acid, and its appearance is reddish brown powder.

3. Phosphorus is located at the 15th position in the periodic table of elements, with element symbol P. Red phosphorus is one of the allotropes of phosphorus. Red phosphorus is a purple-red or brownish amorphous powder with luster.

4. ferric hydroxide (chemical formula Fe(OH)3) is brown or reddish brown powder or dark brown flocculent precipitate or colloid.

5. Potassium permanganate is dark purple, slender prismatic crystals or particles with blue metallic luster; Odorless.

References: Baidu Encyclopedia-Copper Baidu Encyclopedia-Iron Oxide Baidu Encyclopedia-Red Phosphorus Baidu Encyclopedia-Iron Hydroxide Baidu Encyclopedia-Potassium Permanganate.