(Full score 100, test time is 90 minutes)

Possible relative atomic mass: O- 16 N- 14 Fe-56.

A multiple-choice question (each question has only 1 correct answers. Please write the serial number of the correct answer on the answer sheet with 2B pencil. 2 points for each small question, ***30 points)

1. In order to build a sanitary city, which of the following measures collected by the municipal government from citizens do you think is not feasible?

A. Use clean energy instead of coal and oil. B. Implement greening projects to prevent dust pollution.

C, garbage classification and recycling, open burning d, using coal desulfurization technology to prevent SO2 pollution.

Everything is made up of particles. The following substances are made up of molecules

A. dry ice b sodium chloride c diamond d copper

3. Hydrofluoric acid can be used to carve various exquisite patterns on glass, and the reaction in the carving process is as follows:

4hf+SiO2 = sif4 ↑+2h2o, and the reaction belongs to

A. Combination reaction B. Decomposition reaction

C. Displacement reaction D. Double decomposition reaction

4. The main component of cold perm essence is sodium bromate (NaBrO3), which is irritating to the skin and can cause dermatitis if improperly used. The valence of bromine in sodium bromate is

A.+5 B.+4 C.+3 D.-5

5. The basic operation errors of the following experiments are

A. evaporate B. dilute concentrated sulfuric acid C. light alcohol lamp D. check the air tightness of the device.

6. Mingming's hands often peel off and are diagnosed by doctors as lacking vitamins. He should eat more of the following foods.

A. Candy B. Peanut C. Egg D. Fruit

7. All kinds of plants have pH ranges suitable for their own growth. The suitable pH range of several crops is as follows:

Crops rice, tea tree, mint and Maling potato.

The pH value is 6.0~7.0 5.0~5.5 7.0~8.0 4.8~5.5.

When litmus solution is added to the leaching solution of a certain soil, the solution is slightly red, so the crops that are most unsuitable for planting in this soil are

A. tea tree B. mint C. Maling potato D. rice

8. When Xiaojun was doing a small family experiment, he added iodine to the hot rice porridge and found that it did not turn blue. Facing the "abnormal" phenomenon

For example, what he shouldn't do is

A. ask the teacher. B. Find relevant information and explore the reasons.

C. think that you have done something wrong and continue to do other experiments. D. Repeat the experiment to see if there is the same phenomenon.

9. The following practices in life are correct.

A. dry ice as refrigerant b is easy to sublimate, and aquatic products are sold after being brewed with formaldehyde aqueous solution.

C, bicycles are placed in the open air, exposed to the sun and rain, and d, peanut oil is squeezed dry by moldy peanuts.

10. From a scientific point of view, the following statement is correct.

A. use a coal stove for heating in winter. In order to prevent heat loss, doors and windows should be closed.

B. before entering the ancient well, do a lamp test first.

C disposable plastic bags are convenient and economical to use, and production should be vigorously promoted.

D. If the oil pan catches fire carelessly, it should be washed with plenty of water immediately.

1 1. The following table is part of the periodic table of elements, so the following answers are correct.

The ion symbol of element A. 12 is Mg+2 B. The extranuclear electron configuration of chlorine atom is

In the table, there are nonmetallic elements on the left and metallic elements on the right. D. The relative atomic mass of sulfur is 16.

12. It is wrong to explain the following phenomena in life with molecular knowledge.

A. Wet clothes dry quickly in the sun, indicating that the speed of molecular movement is related to temperature.

B. Ripe jackfruit will give off a strong fragrance, indicating that the molecules are constantly moving.

C. When the water boils, lift the lid of the kettle, indicating that the molecular size increases with the increase of temperature.

D liquefied petroleum gas must be stored in cylinders under pressure, indicating that there are gaps between molecules.

13. Water is an indispensable substance in human life. Which of the following statements or practices about water is correct?

A. drinking distilled water for a long time is beneficial to human health. This factory discharges clear and transparent wastewater directly into the river.

C. hard water can be softened with alum. D. Advocating "multi-use of one water"

14. Which of the following statements do you think is unscientific?

A. Eating iodized salt can prevent iodine deficiency B. Using fluoride toothpaste can prevent dental caries.

C. Children are prone to rickets due to calcium deficiency D. Implementing "adding iron to soy sauce" can reduce kitchen pollution.

15. The right picture shows the solubility curves of solid substances A and B. The following statement is correct.

A. the solubility of substance a is 60g.

At b.t., the solubility of a and b is equal.

Increasing the temperature can saturate the unsaturated solution.

The solubility of substance D and substance B increases with the increase of temperature.

Fill in the blanks (this question contains 3 small questions, ***29 points)

16.(6 points) During the Spring Festival in 2008, most parts of southern China were hit by snow and ice. Please use the chemistry you have studied.

Knowledge combines life experience to answer the questions in the following example:

(1) In this snowstorm, the chemical change is (fill in the serial number).

A. the house collapsed. The tree was broken.

C. The ice and snow melt and the rails rust.

(2) Against the snowstorm, millions of soldiers and civilians took to the road to shovel ice and snow, and large snow shovels roared day and night. The bucket of the snow shovel is made of manganese steel and belongs to (fill in the serial number).

A. Inorganic nonmetallic materials B. Metal materials

C. Composite materials D. Composite materials

(3) Xiaoming suggested sprinkling salt on the snow, in order to (optionally "raise" or "lower") the freezing point and make the snow melt faster.

17.( 16) "Green Olympics, High-tech Olympics and People's Olympics" are the three concepts of the Beijing Olympic Games.

Please fully support the Beijing Olympic Games according to your knowledge.

(1) The shell of the Olympic torch (as shown on the right) is mainly made of light and high-quality aluminum alloy. Industrially prepared

The method of metal is to decompose aluminum oxide (Al2O3) by electrifying to obtain elemental aluminum and generate oxygen at the same time. Please write it down.

The chemical equation of this reaction is:

(2) The torch shell is made of aluminum alloy, which is beneficial for torchbearers to collect torches. The reason is that aluminum oxidizes easily in air.

And a lay is formed to protect that aluminum product from further corrosion. The profiles are recyclable, environmentally friendly and recyclable. The following icon belongs to the sign of material recovery (fill in the serial number).

(3) The only way to collect the Olympic flame is to use the concentrated sunlight in concave mirror to light the flame. Sunlight provides conditions for the burning of kindling. When the torch burns, it can be converted into heat energy and light energy. The fuel propane (C3H8) used in the torch of Beijing Olympic Games belongs to (choose "organic matter" or "inorganic matter"). The complete combustion of propane only produces water and carbon dioxide, and the chemical equation of the reaction is:

Fuwa is the mascot of the 2008 Olympic Games. It is made of pure wool and filled with non-toxic synthetic fibers. It can be distinguished by burning, such as burning feathers.

18.(7 points) After studying the properties of metals, the students of interest groups found a silvery metal R in the laboratory, exploring as follows:

(1) When metal R is put into dilute hydrochloric acid, bubbles appear on the metal surface. Then metal R is next to hydrogen in the metal activity sequence table (choose "before" or "after").

(2) In order to compare the activity of metal R and iron, the interest group designed the following scheme for experiments. Please complete the following table:

A phenomenon conclusion of your conjecture verification method

Metal r is more active than iron.

Guess that there is black substance precipitation on the surface of metal R in the solution (choose "correct" or "wrong")

(3) According to the above information, please mark the corresponding positions of metals Fe, R and Cu in the metal activity sequence table below.

Experiment and inquiry (this question contains 2 small questions, ***30 points)

19.( 13) The following are commonly used oxygen making equipment in the laboratory:

(1) Write the names of marking instruments in the drawing: A and B;

(2) When hydrogen peroxide and manganese dioxide are used to produce oxygen, the optional generator is (insert serial number), in which manganese dioxide plays a role.

(3) When potassium permanganate is used to produce oxygen, the chemical equation of the reaction is.

(4) The basis for collecting oxygen with E device is that the method for checking whether oxygen is fully collected is

.

(5) Ammonium chloride solid and alkali lime solid are often heated in the laboratory to produce ammonia gas. NH3 is colorless and irritating at room temperature.

Gases with sexual odor are less dense than air. NH3 is soluble in water, and its aqueous solution is alkaline.

① Reaction equation of ammonia production: 2nh4cl+Ca (OH) 2calcl2+2nh3 ↑+2x. The chemical formula of x is:.

(2) To generate and collect NH3, the generation device that should be selected from the above figure is the collection device _ _ _ _ _.

(3) (3) NH3 is an alkaline gas, and the following desiccant cannot be selected when drying (fill in the serial number).

A. solid sodium hydroxide B. concentrated sulfuric acid C. quicklime

20.( 17) During the summer vacation, while helping the teacher clean up the laboratory, some white powder was found around the wall and cork of a bottle of limewater in reagent bottle. In order to find out the composition and formation reasons of white powder, they made the following explorations:

(1) component conjecture and cause analysis of white powder;

Reasons for the formation of white powder components

It may be that CaCO3 limewater reacts with CO2 in the air;

The chemical equation is:

It may be that the temperature is high in summer vacation, the solubility of solute decreases or the solvent evaporates, and the solute in limewater crystallizes.

After repeated thinking, the students think that white powder may also be a mixture.

(2) Design experiment:

OH- Cl- CO32- NO3-

Ca2+ is slightly soluble and insoluble.

A student put white powder in a test tube. After adding a small amount of water and shaking well, it was found that a white solid did not dissolve. So he came to the conclusion that there must be CaCO3 in the powder. Student B consulted the solubility table (as shown in the following table) and thought that student A's conclusion was not rigorous for the following reasons.

In order to draw a more rigorous conclusion, they conducted the following experiments. Please complete the following lab report:

Conclusion of possible phenomena observed in experimental steps

Take the supernatant from the above test tube and drop 1 ~ 2 colorless phenolphthalein test solution.

Add CaCO3 in dilute hydrochloric acid white powder (optional "Yes" or "No") to the residual solid in the test tube.

From the above experiments, we can know that the composition of white powder is:

(3) communication and reflection:

(1) Through the exploration of the above experiments, students put forward the following suggestions to the laboratory when storing and using perishable solutions, which are reasonable (optional serial number).

A. keep the seal. B. Temporary preparation before use. The use of this reagent is prohibited.

② Dilute hydrochloric acid can be used when cleaning the white powder on the inner wall of reagent bottle with limewater in the laboratory. Please write down the possible chemical equations (only one).

Four calculation questions (this question contains two small questions, *** 1 1)

2 1.(6 points) Soilless cultivation of crops can significantly improve the yield and quality of products. The nutrient solution of eggplant soilless culture contains 7.08% potassium nitrate.

(1)KNO3 belongs to (fill in "compound fertilizer", "nitrogen fertilizer", "potassium fertilizer" or "phosphate fertilizer"). Wherein the mass ratio of nitrogen to oxygen is.

(2) In order to prepare this nutrient solution of 150kg, the mass of KNO3 is required.

22.(5 points) The national water cube used 1 1200 tons of steel. If these steels are obtained by reducing iron oxide with carbon monoxide, what is the minimum required mass of iron oxide?

(The chemical equation of the reaction is 3co+Fe2O3, 2fe+3co2).

Chemistry simulation test questions for senior high school entrance examination

A multiple-choice question (only 1 option in each question meets the meaning of the question, with 2 points for each question and 30 points for * * *).

The title is1234567891012131415.

Answer C A D A D C B C A B B C D D B

Fill in the blanks (this question contains 3 small questions, ***29 points)

16.(6 points, 2 points for each cell)

(1)D (2)B (3) decrease

17. (This small question *** 16 points, 2 points per box)

(1)2Al2O3 4Al+3O2↑ (2) dense oxide film; B

(3) sufficient heat; Chemistry; Organic matter; C3 h8+5o 2·3co 2+4H2O

(4) Pure wool cashmere

18.(7 points)

Before (1) (2 points)

(2) strong (or weak); FeSO4 (or FeCl2, etc. ); True or false (1 for each box, ***3 for each box)

(3)

(2 points, if the order is reversed, do not score)

Experiment and inquiry (this question contains 2 small questions, ***30 points)

19. (This question *** 13 points)

(1) A. Alcohol lamp, B. Iron shelf (2) B; Catalysis (per cell 1 min, ***4 points)

(3) 2kmno4 k2mno4+MnO2+O2 = (2 points)

(4) The density of oxygen is slightly higher than that of air; Put a piece of wood with sparks on the bottle mouth (1 minute, ***2 points).

(5)① H2O (2 points)

②A； D3b (per cell 1 point, ***3 points)

20. (This small question * *17 points)

(1) (Equation 2, every other cell 1, ***4)

Reasons for the formation of white powder components

Calcium hydroxide+carbon dioxide = calcium carbonate ↓+H2O

calcium hydroxide

A mixture of calcium carbonate and calcium hydroxide

(2)Ca(OH)2 is slightly soluble in water (possibly calcium hydroxide) (1 min)

Possible phenomenon conclusion of experimental steps

Phenolphthalein test solution turns red (2 points), and there is Ca (OH) 2 in white powder (2 points).

Bubble formation (2 points) is (1 minute)

Mixture of calcium hydroxide and calcium carbonate (1)

or

Possible phenomenon conclusion of experimental steps

Phenolphthalein test solution turns red (2 points), and there is Ca (OH) 2 in white powder (2 points).

No bubbles (2 points) No (1 minute)

Calcium hydroxide (1)

or

Possible phenomenon conclusion of experimental steps

Phenolphthalein test solution does not change color (2 points). There is no Ca (OH) 2 in white powder (2 points).

Bubble formation (2 points) is (1 minute)

Calcium carbonate (1)

(3)① A and B (multiple choices are not scored, and one item is missing 1 point, ***2 points)

② CaCO3 + 2HCl = CaCl2 + H2O + CO2↑

[or ca (oh) 2+2hcl = CaCl2+2h2o] (2 points)

Four calculation questions (this question contains two small questions, *** 1 1)

2 1. (2 points for each cell, ***6 points)

(1) compound fertilizer; 7∶24 (2) 10.62

22.(5 points)

Solution: let the required iron oxide mass be x.

3CO + Fe2O3 2Fe + 3CO2

160 1 12

X 1 1200 tons (2 points)

1 60:112 = x:11200 tons (1min)

X =16000t (2 points)

A: The mass of iron oxide required is 16000 tons.