Q:What are the black solid elements in junior high school chemistry?

C (charcoal, graphite)

Q:What is the common substance oxide in junior middle school chemistry

Oxides: calcium oxide, sodium oxide, carbon dioxide, phosphorus pentoxide, carbon monoxide, hydrogen peroxide, water, nitrogen dioxide, sulfur dioxide, sulfur trioxide, iron oxide, alumina, silica and the like.

Q:Vinegar and lemon, which is more sour

Lemon with citric acid Molecular formula C6H8O7 vinegar there are acetic acid formula C2H4O2 different chemical composition! I prefer the taste of lemon, but vinegar is more sour

Q:Why does inorganic salts affect chemical degradation of organic wastewater

Industrial organic waste water is highly toxic and stable pollutants, for such waste water is difficult to use conventional physical, chemical and biological methods. This paper summarizes the main processing technologies of biodegradable organic wastewater at home and abroad, including biological treatment, chemical treatment and physical treatment and various joint treatment processes. The methods or processes of various methods or processes are described.

Q:Is calcium carbide inactive?

Calcium carbide, the chemical formula for the CaC2, not inorganic salts. Salt refers to the metal ions and acid ions of the compound, calcium carbide does not have the corresponding acid.

Q:Can an atom be an element?

Yes, the inert element is a single atom molecule, the metal element is also a single atom but generally can not be called a molecule (reason

Q:For patients with ulcerative colitis, which inorganic salt foods can eat?

Vegetables Cooking Choose fresh vegetables with more vitamins and inorganic salts.

Q:What cells produce the collagen and inorganic salts of bone matrix?

Inorganic Salts In Bone

Q:Do not say fluorine gas, it is the strongest element, do not say that electronic anti-matter and current, authority ah

Chlorofluorinated Chloride C1F5 Chlorinated Fluorinated Chloride is a non-combustible, non-combustible colorless gas with strong irritating odor at room temperature. Its solid state is white and has a pale yellow color. It is rapidly hydrolyzed to form chlorine and hydrofluoric acid It is a strong oxidizing agent that reacts strongly with most of the inorganic matter, so that although it does not burn in the air, it can cause fire and explosion.

Q:General identification method of inorganic salts

Take the test sample, heating to remove the salt may be mixed, let cool, add water to dissolve, and then deepen .1% sodium tetraphenylborate solution and acetic acid that is white precipitate. The reaction conditions must be carried out in acidic (pH 2-6.0).