英语自学基础知识第62期

4, the A - > K in the following diagram represents the common material in the junior middle school chemistry. In A, C two known composition elements of the same f G solution for the dilute solution of a substance is observed

The concentrated solution of G can make a small stick black. Part of the product is not indicated in the diagram.

Please answer the following questions in the

1 J may write exergy from the chemical exergy as a write from. Exergy from Fe

Exergy 2 deep write the following reaction of chemical equation in the ninth grade chemistry deduction thematic second 13 pages No. 3 (1) in the

The F + H, E + C in ____________________________

The I + - K in the ________________________________ base

Write another 3 exergy from reaction to prepare the D laboratory in ________________________________ chemical equation

5, to answer the question in according to the transformation shown on the right of the

(1) if A is a common black solid red solid is B la la CO2 from B to _____________ exergy

(2) if B is a water solution gas La B is light green in LA is a K equation of reaction may be

The reaction type is ____________________. Exergy from Fe

(3) if A is shown as red solid B white solid is a possibility for ____________ la. Exergy from AgNO3

6 La A.B.C.D.E.F six compounds, following their reaction in aqueous solution, chemical formula deduces the material test:

B:_______ C:________ D:_________ E:_____ A:______

A BaCl2

B Ba in the chemical exergy (NO3) 2

C AgCl

D in BaSO4

E in HNO3 from the end

7 La A, B, C, D, e, F, G common material increase the B, e and G belongs to the elemental increase reaction II is ironmaking industry in the main reaction increase below is their

The mutual transformation relationship. Please answer in

The chemical exergy from 1 substance A. Exergy from CuO

2 from exergy chemical equation for the reaction to write

C the name of the solid material shown a solid material used in real life is.

3 write a chemical equation from exergy generated in the reaction of solid red

Is in the cause of colorless gas G from above 4 exergy conversion

Exergy excess dilute hydrochloric acid and hydrogen from the reaction of iron

8, have shown a solid mixture of sodium A and a soluble calcium salt of B consists of the following steps in the experiment

It can judge two kinds of salt mixture filling type chemical exergy from A f B. A total of two special grade nine chemistry deduction page 13 page fourth in the Na2CO3 CaCl2 R

9, according to the graph answer. With the formula

(1) C is ___, E is ____ _, D is _ ___ in BaSO4 solution Fe (OH) 3 FeCl3 f

(2) if B is water, then A is ____ __. in Fe2 (SO4) 3 F

(3) if B is acid solution, then A is __ ___. in Fe2O3 f

10, the existing full transparent liquid materials A and B share with the solid material experiment steps and the phenomenon as shown below

In 1 according to the change of name F, B, C, A that D, E, F of 6 substances are

,,,,,.

In the H2SO4 Fe2O3 Fe2 (SO4) 3 K2SO4 Fe (OH) 3 BaSO4 f

In the 2 F write reaction chemical equation

A+B,

C+KOH:

11. Pictured is material A-H mutual relationship ("," said of material transformation "," said at both ends of the material can produce chemical

Response). A, G are commonly used in fire extinguishing gas elemental share C share F is a blue

solution share can be used for the preparation of pesticide bordeaux. Would you please answer

(1) chemical formula H C share may be in CO2 HCl f

(2) 1, 2, 3, write the label, the chemical formula

The grade nine chemistry deduction 13 page fifth page two topics.

12, there is probably a by one or several of CaCO3, K2SO4, NaNO3, FeCl3, BaCl2 composition experiment to get the following conclusion exergy of a pack of solid powder

In the 1 the solid powder to the water get white precipitate colorless supernatant. In the K2SO4 CaCO3 BaCl2

In the 2 part of the white precipitate is dissolved in dilute nitric acid and gas release. From the experiment can determine the powder containing certain

There are some does not contain may have.

In the FeCl3 NaNO3

Thirteen

According to the relationship between chemical exergy of related substances in type inference

A from

D from

F from yesterday.

In CuO H2SO4 CuSO4 Cu (OH) K2SO4 BaSO4 * 2

14, there is loss of potassium nitrate, sodium carbonate, label silver nitrate, calcium nitrate and five bottles of dilute hydrochloric acid solution. The arbitrary number, B, C, A included D, E two

The following table two mixed phenomenon of exergy

In the 1 test of inference and write down five solute chemical formula.

A B C D