show cause and effect a chemistry reaction
A chemical reaction is a natural
process that always produces inter-altered chemical compounds. The compounds or
the initial compounds involved in the reaction are referred to as reactants.
Chemical reactions are usually characterized by chemical changes, and will
result in one or more products that typically have different characteristics of
the reactants. Classically, a chemical reaction involves a change involving the
movement of electrons in the formation and disconnection of chemical bonds,
although essentially the general concept of chemical reactions can also be
applied to the transformation of elementary particles such as nuclear
reactions. The reaction equations are used to describe chemical reactions. The
reaction equation consists of a chemical formula or a structural formula of the
reactant on the left and the product on the right. Between the product and the reactants
are separated by arrows (→) indicating the direction and type of reaction. The
tip of the arrow indicates where the reaction is moving. Double arrows (→),
which have two arrows of different directions, are used in equilibrium
reactions. The chemical equation must be balanced, according to the
stoichiometry, the number of atoms of each element on the left must be equal to
the number of atoms of each element on the right. This balancing is done by
adding the number in front of each compound molecule (denoted by A, B, C and D
in the schematic diagram below) with small numbers (a, b, c and d) in front of
it
A more complicated reaction is illustrated by a
reaction scheme, the goal being to know the starting or ending compounds, or
also to show the transition phases. Some chemical reactions can also be added
to the writing on the arrow; For example the addition of water, heat,
illumination, catalysis, etc. Also, some minor products can be placed under the
arrows.
An example of an organic reaction: oxidation of ketones to esters with peroxycarboxylic acid
Retrosynthetic analysis can be used to design complex synthesis reactions. Analysis begins with the product, for example by breaking the selected chemical bond into a new reagent. Special arrows (⇒) are used in retro reactions.
A more complicated reaction is illustrated by a
reaction scheme, the goal being to know the starting or ending compounds, or
also to show the transition phases. Some chemical reactions can also be added
to the writing on the arrow; For example the addition of water, heat,
illumination, catalysis, etc. Also, some minor products can be placed under the
arrows.An example of an organic reaction: oxidation of ketones to esters with peroxycarboxylic acid
Retrosynthetic analysis can be used to design complex synthesis reactions. Analysis begins with the product, for example by breaking the selected chemical bond into a new reagent. Special arrows (⇒) are used in retro reactions.
Physical change is a change that does not produce new substances or is reciprocal, meaning it can return to its original state.
• The causes of physical changes:
1. There is release and heat removal by the substance.
2. Occurs due to mixing of the substances as long as the mixed substances do not react to form a new substance.
3. If the substance is cut or split.
B. Chemical Change or Reaction
Chemical change is a change that produces new substances. New substances produced there are those who can return to their original form and some are not able.
• Causes of chemical reactions:
1. Occurs due to burning.
2. Occurs due to mixing of substances.
3. Occurs due to the flow of electricity.
The chemical reaction equation is written as follows:
A and B à reactant
C and D à reaction product.
In the reaction equation there is a symbol of the form of substance: s (solid), aq (aqueous), l (liquid) and g (gas).
• Characteristics of chemical reactions:
A. Making gas
B. Formation of precipitate
C. Discoloration
D. Temperature changes
• Various kinds of chemical reactions:
1. Decomposition
2. Oxidation
3. Reduction
4. Neutralization
5. Precipitation
6. Exchange
7. Fermentation
• How to control the speed of the reaction can be done by changing:
A. Reaction temperature
B. Concentrations of reagents
C. Touch surface area
D. Catalyst
C. Chemical Reactions in Everyday Life
1. Corrosion
2. Decomposition of food
3. Fireworks
• Division of Material Nature
Based on the size of the substance
1. Intensive properties: properties that are not affected by the size of the substance.
Example: color, density, freezing point, etc.
2. Extensive properties: properties that are affected by the size of the substance.
Example: volume, length, mass, etc.
Based on the ability of substance
1. Physical properties: properties that can be observed without changing the identity of the substance.
Example: melting point, boiling point, heat conductivity, electric conductivity, density, hardness level etc.
2. Chemical properties: properties related to the ability of the substance to react to form other substances.
Example: the ability of a substance to react with oxygen, water, acid etc.
How the characteristic of the chemical reaction?
BalasHapusIn Chemical Reactions other than marked by the occurrence of sediment can also be marked by the change of color, temperature change, or gas formation. Chemical Reaction Has 4 Characteristic Namely As follows ...
Hapus1. Chemical reactions that produce precipitate
2. Chemical Reactions that cause Color Changes
3. Chemical Reactions that Produce Gas
4. Chemical Reactions Resulting in Temperature Changes
Assalamualaikum wr wb . Hi eka .. i want to ask you about chemical reaction .
BalasHapusWhat Happen if iron meet with water ?
If water meets with iron will experience corrosion events because corrosion or corrosion is a chemical phenomenon in metallic materials which is basically a metal reaction into ions on metal surfaces that are in direct contact with the aqueous and oxygen environments. The most common example, namely the destruction of ferrous metals by the formation of oxide rust. Thus, corrosion causes many losses. Metal corrosion involves the anodic process, which is the oxidation of metals into ions by releasing electrons into the metal and cathodic processes that consume the electrons at the same rate: the cathodic process is usually the reduction of hydrogen ions or oxygen from the surrounding environment. For example iron corrosion in moist air
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What is the most dangerous effect in chemical reaction?
BalasHapusThe most dangerous effects that can occur are death, cancer, meleouhnya skin, damage to respiratory tract and infertility.
HapusHow the process happened?
BalasHapusChemical reactions are a natural process that always results in the conversion of chemical compounds. [1] The compounds or the initial compounds involved in the reaction are referred to as reactants. Chemical reactions are usually characterized by chemical changes, and will result in one or more products that typically have different characteristics of the reactants. Classically, a chemical reaction involves a change involving the movement of electrons in the formation and disconnection of chemical bonds, although essentially the general concept of chemical reactions can also be applied to the transformation of elementary particles such as nuclear reactions.
HapusDifferent chemical reactions are used together in chemical synthesis to produce the desired product of the compound. In biochemistry, a series of enzyme-catalyzed chemical reactions form a metabolic pathway, in which synthesis and decomposition are usually impossible in the cell.
hi eka , i have one question about this post
BalasHapushmm , can you give me one example for cause and effect ? around our environment thank youu
His example is now the world is getting hotter due to the occurrence of a global warming that causes a lot of its logging into the lungs of the world and air pollution
Hapuscause : forest loading and air pollution
effect : global warming