Find the phenomenon of the combustion of several substances in the third problem

Carbon Combustion A reddish flame is emitted from combustion in the air.

White glow in oxygen.

The patterns on these books are all on them, see for yourself.

Acid rain nitric oxide.

Typical sulfur dioxide, nitrogen dioxide, nitric oxide.

Oxygen can rekindle the spark, which can be used to check if the stalk is extinguished.

Depressed, what kind of problem is this, it's so strange.

The chemical equations of the third year of junior high school are summarized according to the classification of elements.

Chemical equations related to oxygen:

2mg+O2 ignites 2CuO+H2O+CO2 Phenomenon: The solid gradually turns from green to black, and at the same time, there is a gas that can make the pure lime water turbid.

Iron: Fe+2HCl==FeCl2+H2 Phenomenon: Iron powder is slowly decreasing, and gas is formed at the same time, and the solution is light green.

FeCl2+2NaOH==Fe(OH)2 +NaCl phenomenon: white flocculent precipitate is formed.

4Fe(OH)2+O2+2H2O==4Fe(OH)3 Phenomenon: After iron hydroxide is left in the air for a period of time, it will turn reddish-brown.

Fe (OH) 3+3HCl==FeCl3+3H2O Phenomenon: reddish-brown flocculent precipitate dissolves, and the solution is yellow.

Fe (OH) 2+2HCl==FeCl2+2H2O Phenomenon: White flocculent precipitate dissolves, and the solution is light green.

Fe+CuSO4==FeSO4+CU Phenomenon: Iron dissolves to form red metal.

Fe+AGNO3==FE(NO3)2+AG phenomenon: Iron dissolves to form a silvery-white metal.

Fe2O3+6HCl==2FeCl3+3H2O Phenomenon: The red solid dissolves to form a yellow solution.

Phenomenon: Iron burns violently, sparks in all directions, and produces a black solid.

Zn+FeCl2==ZnCl2+Fe Phenomenon: Zinc powder slowly dissolves to form iron.

Silver: agno3+hcl==agcl +hno3 Phenomenon: There is a white precipitate generated, and it is insoluble in strong acids.

Agno3+NaCl==AGCL+Nano3 Phenomenon: There is a white precipitate formed, and it is insoluble in strong acids.

Cu+2AGNO3==Cu(NO3)2+2AG Phenomenon: Red copper gradually dissolves, and silvery-white metal is formed.

2agNO3+NA2SO4==AG2SO4 +2nano3 Phenomenon: There is a white precipitate.

Supplemental Chemical Equations:

3AG+4HNO3 (dilute) ==3AGnO3+NO +2H2O Phenomenon: Silver gradually dissolves, and the generated gas turns brown when exposed to air.

AG+2HNO3 (concentrated)==AGNo3+NO2 +H2O Phenomenon: Silver gradually dissolves to form brown gas.

Cu+2H2SO4 (concentrated) ==CuSO4+SO2 +2H2O Phenomenon: Copper gradually dissolves and produces a gas with a sexual odor.

2FeCl3+Fe==3FeCl2 Phenomenon: Iron powder is gradually dissolved, and the solution changes from yellow to light green.

2Na2O2 (sodium peroxide) + 2H2O2 = 4NaOH + O2 Phenomenon: There is a gas formation that can rekindle the wooden strips with sparks.

Metal: Combustion of Fe.

Sparks splash around, there is a lot of heat production, and there is a black solid that produces magnesium burning.

Sparks splashed everywhere, there was a dazzling white light, and white smoke was generated.

Non-metallic: Combustion of s.

There is a purple fire that emits a lot of heat.

c's combustion. White smoke is generated, which emits a lot of heat.

Combustion of H2.

Blue flames generate.

These are all high school contents, metal combustion is mainly a flame color reaction, and non-metals are mainly the visible light color radiated, which can be referred to the chemistry textbook in the second year of high school. There is white smoke because there are small solid particles generated

Metallic Iron: Sparks are scattered, with a large amount of heat production, and black solids produce copper: brownish-yellow smoke is generated.

Magnesium: Sparks are scattered, with dazzling white light and white smoke generated.

The presence of white smoke indicates the formation of white solid particles.