Buzz
Eighth-grade students delve into Chemistry basics such as oxidation states, the periodic table of elements, atomic mass, and chemical solubility tables. Mastery of these concepts is key to excelling in Chemistry. If you struggle with memorizing solubility tables, refer to the article below.
Effective Techniques for Learning the Solubility Table of Various Substances in Water
I. Solubility Table of Chemical Compounds
* Table 1
* Table 2
II. Essential Facts about Solubility Tables
According to the chemistry textbook for ninth graders, solubility is defined as the number of grams of a substance completely dissolved in 100 grams of solvent (usually water) to form a saturated solution at a specific temperature.
Factors such as temperature, solvent type... are considered to influence the solubility of substances. For example, adding sugar to water at high temperatures or agitation will result in faster dissolution.
This solubility table serves as a tool to help you understand solubility, evaporation rate, precipitation, making problem-solving exercises easier.
III. Quick Tips for Memorizing the Solubility Table
* Solubility of salts
* Solubility in water of acids
Only H2SiO3 is insoluble, whereas other acids are soluble and easily evaporate.
* Chemical solubility of bases
All substances are insoluble except:
- Alkali metal bases like Li, K, Na are all soluble
- Alkaline earth metal bases like Ba, Ca are sparingly soluble
- Compounds of NH4OH are soluble
2. Solubility of salts
Salt types are always soluble
Such as Acetate salts (CH3COO)
And Nitrate salts (NO3)
Regardless of the metal
These salts are always soluble
Such as Chloride, Sulfate (Cl; SO4)
Except for silver, lead chloride (AgCl; PbCl)
Barium, lead sulfate (BaCl2; PbCl2)
These salts are insoluble
Carbonate; Phosphate
Sulfide and Sulfite
Except for Alkali, Ammonium......
With this poem, you can see the solubility of chloride salts and the solubility chart of phosphate salts is always soluble.
3. Poem of solubility of chemical substances
Bases, those stubbornly insoluble: Copper, aluminum, chromium, zinc, manganese, iron, lead.
Little is the realm of Calcium
Magnesium doesn't readily succumb to electrolysis either
All metal salts of Group I dissolve
Just as Nitrate and her organic companions
To remember, one must compose verse!
Let's experiment now and see,
Group I Metals, we already know,
We'll 'pry' out the other metals and search
Phosphorus quietly immerses in water (Except for Group I metals)
Sulfur exhibits some 'unyielding silence':
Barium, lead with S - r
Silver, 'naive lad' Calcium, slightly dissolves,
As for Chloride salts - Silver precipitates, lead stubbornly tries to dissolve (Similar to Bromide, Iodide)
Other salts are easy to remember:
SO3 ions don't dissolve at all! (Except Group I metals)
What about S ions then? (Similar to carbonate salts)
Aluminum doesn't exist, all vanish
Except for copper, tin, silver, manganese,
Mercury, zinc, iron don't dissolve along with lead
Up to here, the test is complete,
Wishing you success in all endeavors!
The study tips provided here are supplementary methods for your learning. However, you still need to dedicate more time, persevere in studying, and practice more exercises to remember longer.
With the solubility table of chemical substances updated by Mytour above, students will reinforce their fundamental knowledge, find chemistry exercises and learning easier, thus becoming more interested in this subject.
