· Sodium cyanide: chemistry wholesale formula NaCN, common name Sanai colorless crystal, highly toxic, soluble in water, strong alkaline, used in electroplating industry and extraction of gold and silver.
· Sodium hydroxide: chemical formula NaOH, commonly known as caustic soda. Caustic soda. Caustic soda, colorless transparent crystal soluble in water, strongly corrosive to clothing and skin, easy to absorb carbon dioxide in the air and deterioration, has the commonness of alkali, is an important chemical raw material, used to make soap. Pulp and refined oil, etc. Industrial production of sodium hydroxide with electricity and salt water.
· Iron hydroxide: chemical formula Fe(OH), brown or black crystal, the loss of a molecule of water is called basic iron oxide 3 FeO(OH), insoluble in water and weak base, soluble in acid, alkaline stronger than acid, slightly amphohermous, is also one of the main components of iron x rust, general rust can be expressed as: FeO·HO. 232
· Calcium hydroxide: chemistry wholesale formula Ca(OH), commonly known as hydrated lime or salted lime, colorless hexagonal crystal, slightly dissolved in water, clarified calcium hydroxide solution also known as lime water, lime water and carbon dioxide reaction will produce calcium carbonate (CaCO) precipitation, according to this phenomenon lime water used to identify the presence of carbon dioxide. 38 · Copper hydroxide: chemical formula Cu(OH), sky blue flake crystal, heated to 80 decomposition into CuO and 2HO, insoluble in water, is a weak base, slightly amphoterous, prepared with soluble copper salt and lye, heating copper hydroxide 2 to produce water and copper oxide.
· Lactic acid: organic compound, chemical formula CHO, colorless or yellow syrupy liquid, which is contained in milk 363. People often feel muscle pain during exercise because muscles secrete lactic acid, which disappears after a while because lactic acid reacts with oxygen in the body and converts into carbon dioxide and water.
· Water: The chemistry wholesale formula HO of water, each water molecule is composed of two hydrogen atoms and one oxygen atom, is the most common oxide from the natural world, pure water is no color, no smell, no taste of liquid, can produce H and O when energized, is an important substance to maintain life. 22· Salicylic acid: the scientific name of o-hydroxybenzoic acid, chemical formula CHO, exists in nature in the form of ester, 763 FeCl solution purple, carboxylic acid is stronger than carbonic acid, hydroxyl acid is weaker than carbonic acid salicylic acid has anti-corrosion 3 sterilization and disinfection effect, can be used for synthetic dyes and pharmaceuticals.
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Practicing previous years’ papers will give the candidate a good hold over the topics and help them for a better preparation.
The topic wise weightage for this section is as follows:
Periodic Table & Periodicity in Properties
Alkyl Halide, Alcohol & Ether (Reaction Mechanism)
Atomic Structure & Nuclear Chemistry Chemical Equilibrium
You will see in the above table that the maximum weightage is to Organic Chemistry, which is indeed challenging for students.
Chemistry is a very complex subject.
If you are already taking chemistry as a subject or lesson, then you might require help.
The best way to get help with your chemistry assignment and exam is to look for tuition.
It is one thing to learn chemistry in class, but you need to look for tuition to understand the subject fully.
You can look for Chemistry tuition near me, which will sharpen your skills and make you better.
If you plan to take a science-related career, you know the importance of doing well in your chemistry class.
