"Solubility" Solution PPT Courseware 6

Description

"Solubility" Solution PPT Courseware 6

learning target

1. Understand the meaning of saturation;

2. Be able to illustrate the crystallization phenomenon with examples;

3. Understand the meaning of solubility.

4. Preliminarily learn to draw and analyze solubility curves, obtain relevant information from solubility curves, experience the process of data processing, and learn data processing methods;

5. Know the factors that affect gas dissolution, and be able to use the knowledge of solubility to explain relevant phenomena in life;

6. Learn the thinking method of looking at problems dialectically.

think:

What would happen if you put a lot of sugar in a glass of water?

Can a substance dissolve indefinitely in a certain amount of water? What factors affect it?

1. Saturated solution and unsaturated solution

1. What are saturated solution and unsaturated solution?

In ___________, a certain solute is added to ___________. When the solute cannot continue to dissolve, the solution obtained is called a saturated solution.

In ___________, a certain solute is added to ___________. When the solute can continue to dissolve, the solution obtained is called an unsaturated solution.

How to tell if a solution is saturated?

Generally speaking, to determine whether a solution is saturated, just look at whether there is any remaining solute that cannot continue to dissolve at a certain temperature. If so, and the amount of solute is no longer decreasing, then the solution is a saturated solution.

If there is no solute remaining in the solution, does it mean it must be an unsaturated solution?

Practice in class

1. Cool the 1000C saturated potassium nitrate solution to 300C and filter out the crystals. The resulting solution is a ________ solution (saturated or unsaturated).

2. When the saturated ammonium chloride solution at 600C is cooled to 100C, ammonium chloride crystals precipitate, and the remaining solution is:

A． Concentrated solution B. Dilute solution C. Saturated solution D. Unsaturated solution

3. To change the unsaturated solution of potassium nitrate into a saturated solution at 200C, the following measures can be taken:

A． The temperature rises to 600C B. Add potassium nitrate

C. Add water D. Add 200C potassium nitrate saturated solution

4． The solubility of a substance increases as temperature increases. There is a bottle of saturated solution of the substance at room temperature. To turn it into an unsaturated solution while keeping the quality of the solvent unchanged, the method that can be used is ________.

5. At room temperature, slowly add the solids of sodium chloride and potassium nitrate into two small beakers each containing 10ml of water, stirring while adding, until there is remaining solid in the beakers and can no longer be dissolved. This experiment illustrates _________.

2. Solubility

1. Solid solubility

Under _______, the mass of solute in grams dissolved when a solid substance reaches the _______ state in _______.

Practice in class

1. When you heat a test tube filled with saturated calcium hydroxide solution, you will see ____________.

2. According to the X and Y solubility curves on the right, the following statements are correct:

A． X is more soluble than Y.

B． The solubility of Y is greater than that of X.

C. As the temperature increases, the solubilities of X and Y increase by the same amount.

D. In the X and Y solubility curves, there is only one temperature at which the mass fraction of the saturated solution of X is equal to the mass fraction of the saturated solution of Y.

3. The figure on the right represents the solubility curves of three substances A, B, and C respectively. Then at t20C, the order of their solubility in order of magnitude is:

A． A,B,C

B． B,A,C

C. B,C,A

D. C,A,B

3. Gas solubility

Gas solubility: The volume of gas when a gas is dissolved in 1 volume of water and reaches saturation when the pressure is 101KPa and a certain temperature.

For example: at 00C, the solubility of nitrogen is 0.024.

That is: at 101KPa and a temperature of 00C, a maximum of 0.024 volumes of nitrogen can be dissolved in 1 volume of water.

What does the solubility of gases relate to? Answer the questions below to find out.

(1) When you open the soda lid, the soda will spray out automatically. What does this say about the solubility of gases in water?

(2) After drinking soda, I often burp. What else does this show about the solubility of gases?

The solubility of gas is related to temperature and pressure. The higher the temperature, the smaller the solubility; the higher the pressure, the greater the solubility.

Keywords: solution teaching courseware, solubility teaching courseware, New People's Education Edition ninth grade chemistry PPT courseware volume 2, ninth grade chemistry slide courseware download, solution PPT courseware download, solubility PPT courseware download, .ppt format

For more information about the "Solubility of Solution" PPT courseware, please click the "Solubility of Solution ppt ppt" tab.

"Solubility" Solution PPT Courseware 10:

"Solubility" Solution PPT Courseware 10 Knowledge Review Knowledge Point 1 Saturated solution and unsaturated solution 1. Concept: At a certain temperature, in a certain amount of solvent, a solution of _________ is called a saturated solution of this solute; ___________..

"Solubility" Solution PPT Courseware 9:

"Solubility" Solution PPT Courseware 9 1. Solubility The ability of one substance to dissolve in another substance. Influencing factors: 1. Related to the properties of the solute 2. Related to the temperature 3. Related to the properties of the solution 2. Saturated solution and unsaturated solution 1. Definition 2. Mutual conversion...

"Solubility" Solution PPT Courseware 8:

"Solubility" Solution PPT Courseware 8 1. Solubility of Substances Usually the ability of one substance to dissolve in another substance is called solubility. The solubility is related to the properties of the solute and the solvent: different substances have different solubilities in the same solvent; the same...

File Info

Update Time: 2024-09-05

This template belongs to Chemistry courseware People's Education Press Ninth Grade Chemistry Volume 2 industry PPT template

Preview