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

Black solid Element: Toner, iron powder

Q:What are the properties of acid?

. Make purple litmus test solution red, colorless phenolphthalein does not change

Q:as a example potesium,sodium,magnees,calcium

The sodium-potassium pump is most important in controlling the working of neurotransmitters. Calcium ion is also generated in voltage gated Ca++ channel, and Magnesium is necessary for metabolic functions. But Sodium is one of the most important inorganic component in our body. Of course Potassium is also as important. But, if you have ever seen the back of all food products there is a special part showing amount of Sodium in it...even Snacks.. :)

Q:The difference between the ignition of inorganic salts and organic matter

Will the ignition of inorganic matter and the ignition of organic matter, thank you

Q:What are minerals and trace elements?

81 species were detected on the basis of the human body. 81 kinds of elements in the body of the arrangement is very tight combination, and more less will not work. Human anatomy found that there are 74 kinds of serum, 54 kinds of brain, 49 kinds of heart, 50 kinds of liver, thymus 18 species. They constitute the most basic unit of the human body, human life, old, sick, dead and all elements related to the body. According to the elements in the human body content is different, can be divided into macro elements and trace elements two categories. Accounting for more than 0.01% of the total body weight of the elements, such as carbon, hydrogen, oxygen, nitrogen, calcium, phosphorus, magnesium, sodium, etc., called macro elements; , Zinc, copper, manganese, chromium, selenium, molybdenum, cobalt, fluorine, etc., known as trace elements. Trace elements in the human body content is really minimal, such as zinc only the total weight of the human body of thirty-three parts per million. Iron is only sixty thousandths.

Q:Several kinds of inorganic salt food sources?

Pepper, bamboo, bamboo, seaweed, lily, nuts, bread, dairy, beans, seaweed, kelp, kelp, Olives, cauliflower, amaranth, shepherd's purse, salted egg, noodles, fermented bean curd, tempeh, spinach, amaranth, spinach, coriander, fruit

Q:A solution is known to contain an inorganic salt of one of the following elements. The solution is colorless. The solution contains a salt ofa. Cub. Mnc. Fed. Nie. Zn

Mn or Zn. Both MnSO4 and ZnSO4 solutions are water-white. KMnO4 is purple. But you did not stipulate.

Q:What is the use of inorganic salts and organic salts?

The organics are compounds containing carbon, and the inorganic salts are salts containing no carbon. For example, we usually eat sugar is organic matter, salt is inorganic salt.

Q:What are the characteristics of the composition of the base?

The anions obtained when ionizing are all OH- are bases; alkali: OH- and metal ions (or NH4).

Q:Is it possible to adjust the internal temperature of the carbohydrate in the vacuole

The plant has no internal environment.