MindMap Gallery Sulfur and its compounds
The college entrance examination chemistry test points were sorted out. The figure systematically sorted out the knowledge related to sulfur elements, covering sulfur element, hydrogen sulfide, sulfur dioxide, sulfur trioxide, sulfuric acid and sulfate.
Edited at 2025-09-25 15:18:06This article discusses the Easter eggs and homages in Zootopia 2 that you may have discovered. The main content includes: character and archetype Easter eggs, cinematic universe crossover Easter eggs, animal ecology and behavior references, symbol and metaphor Easter eggs, social satire and brand allusions, and emotional storylines and sequel foreshadowing.
[Zootopia Character Relationship Chart] The idealistic rabbit police officer Judy and the cynical fox conman Nick form a charmingly contrasting duo, rising from street hustlers to become Zootopia police officers!
This is a mind map about Deep Analysis of Character Relationships in Zootopia 2, Main content: 1、 Multi-layer network of relationships: interweaving of main lines, branch lines, and hidden interactions, 2、 Motivation for Character Behavior: Active Promoter and Hidden Intendant, 3、 Key points of interaction: logic of conflict, collaboration, and covert support, 4、 Fun Easter eggs: metaphorical details hidden in interactions.
This article discusses the Easter eggs and homages in Zootopia 2 that you may have discovered. The main content includes: character and archetype Easter eggs, cinematic universe crossover Easter eggs, animal ecology and behavior references, symbol and metaphor Easter eggs, social satire and brand allusions, and emotional storylines and sequel foreshadowing.
[Zootopia Character Relationship Chart] The idealistic rabbit police officer Judy and the cynical fox conman Nick form a charmingly contrasting duo, rising from street hustlers to become Zootopia police officers!
This is a mind map about Deep Analysis of Character Relationships in Zootopia 2, Main content: 1、 Multi-layer network of relationships: interweaving of main lines, branch lines, and hidden interactions, 2、 Motivation for Character Behavior: Active Promoter and Hidden Intendant, 3、 Key points of interaction: logic of conflict, collaboration, and covert support, 4、 Fun Easter eggs: metaphorical details hidden in interactions.
Sulfur and its compounds
Sulfur element
Physical properties
hardness
odor
Appearance
What is easily dissolved in
What is the general sulfur element at high temperature
Is it soluble in water and how solubility in alcohol
Properties of sulfur element at high temperature
Agenda
Oxidation
It has weak oxidation properties, and it causes qualitative change with variable-valent metals, and it generates low-priced metal sulfides with variable-valent metals. However, mercury is relatively special, and mercury is sulfur-elastic. The scattered mercury can be converted into mercury sulfide by sulfur powder.
If copper is heated to produce copper sulfide instead of copper sulfide, it will produce iron sulfide and iron.
Elemental stability
Reduction
Disagreement reaction
Commonly disproportionate reactions occur when co-heating with sodium hydroxide or concentrated nitric acid
Reaction with metal element
Heat the product with iron or copper
Reaction with non-metallic element
Co-heating products with hydrogen or oxygen
How to remove residual sulfur element from the inner wall of the test tube
Sulfur dioxide
Physical properties
color
odor
density
Solubility
Boiling point
Chemical Properties
General properties of acidic oxides
Oxidation and reducing properties
Reduction
Reaction principle with halogen element
Bleaching
Sulfur dioxide can react with colored substances to form unstable colorless substances, causing them to lose their original color, and can restore the original color under certain conditions after fading (such as after heating).
Can the acid and alkali indicators be bleached, and can the organic pigments such as flowers and red
How to remove sulfur dioxide in the laboratory
Preparation of sulfur dioxide
Reaction principle
q Strong acid to weak acid
Reaction equation
Sulfuric acid concentration requirements, why not too thin or too thick
y redox reaction
Reaction equation
Reaction conditions and sulfuric acid concentration requirements
How to dry and remove miscellaneous
collect
Exhaust treatment 1
Why do the oxidation products of sulfur dioxide in aqueous solution? How does the acidity and alkalinity of the environment change after sulfur dioxide participates in the reaction?
Issue 159
The root cause of the lack of obvious signs of sulfur dioxide passing into barium chloride solution or calcium chloride solution? Issue 159
use
Oxidative properties can generally be used for disinfection, and as a reducing agent, it can be used as a food additive to resist oxidation.
s acid rain
definition
Is acidic rain necessarily acid rain? Why
Sulfur trioxide
How to separate sulfur dioxide and sulfur trioxide?
Issue 159
How to test sulfur dioxide and sulfur trioxide mixed gas
Issue 159
Physical properties
Chemical Properties
Industrial law
Sulfate
plaster''
Calcium sulfate combined with dihydrate
Crafted gypsum
Calcium sulfate dihydrate
Gallbladder
Copper sulfate pentahydrate
Blue crystal
sulfuric acid
use
Industrial preparation
The last step in industrial preparation of sulfuric acid is absorbed with concentrated sulfuric acid, which is obtained by smoked sulfuric acid and then diluted with water as needed. The reason why water cannot absorb sulfur trioxide is that it will release a lot of heat to form acid mist and absorb poorly
Physical properties
Chemical properties of dilute sulfuric acid
Characteristics of concentrated sulfuric acid
Dehydrating
Can remove hydrogen and oxygen from organic matter such as paper and wood according to the composition of water
Water absorption
Strong oxidation
Distinguish between dehydration and water absorption
The rules of reaction between concentrated sulfuric acid and metal
Reaction with copper
Passivation of iron and aluminum
Characteristics and products of reaction with active or inactive metals at room temperature
Products after the concentration of concentrated sulfuric acid decreases
Rules of reaction between concentrated sulfuric acid and non-metallic products
The reaction needs to be heated, otherwise the reaction will not be
The reduction product is generally sulfur dioxide. Generally, metals are oxidized to high-valent sulfates, and non-metals are oxidized to high-valent oxides or oxygen-containing acids.
When concentrated sulfuric acid reacts with metals, it shows both acidity and strong oxidation, while when reacting with non-metals, it shows only strong oxidation. As the reaction proceeds, the sulfuric acid concentration becomes smaller and once it becomes dilute sulfuric acid, the reaction stops.
expand
Identification and Test of Sulfate and Carbonate
Take advantage of the differences in nature between the two or the conditions for fixing the two
Conversion of sulfur-containing substances in different valence states
Classification and bleaching principle of common bleaching agents
Oxidation type
Combination type
Adsorption type
Comparison of sulfur dioxide 1 and chlorine for bleaching
Common price
0 104 6 -2
The price is stable?
Conversion between sulfur and its compounds
Testing of sulfate ions
Principles and operation methods
How to eliminate interference
Remove impurities from coarse salt
Hydroxylate is required to remove Mg ions, carbonate is required to remove calcium ions, and barium ions are required to remove sulfate, which means that these ions must be added. Carbonate ions are used intelligently to remove barium ions, so barium ion-containing reagents must be used before carbonate reagents, while hydrogen ions are required to use hydrochloric acid, which can be removed by volatilization and will not affect the removal of other ions. Therefore, the sodium hydroxide is at random, and sodium carbonate must be used before sodium hydroxide.
Sulfur element
Pyrite
plaster
Mirgentina
Cherry ore
Common homogeneous bodies
Characteristics of hydrogen sulfide
In the state
odor
Is it poisonous?
The density of air is 1.293g/L
Oxidative and oxidative acids of acids
The oxidation of acid refers to the oxidation properties of hydrogen ions ionized by the acid in aqueous solution, so that the hydrogen ions can be reduced to hydrogen, which is the generality of all acids.
Oxidizing acid is an acid molecule or acid ion that obtains electrons, while hydrogen ions cannot obtain electrons, and the reduction product is not hydrogen, such as concentrated sulfuric acid.