Chemical change is a change that produces new
substances with new properties. Chemical changes are often referred to as
chemical reactions. Chemical reactions can produce gas, sediment,
discoloration, and temperature changes. Chemical reactions accompanied by
energy expenditure and cause the surrounding temperature to rise, called the
exothermic reaction. While chemical reactions that require energy for a
reaction to take place are called endothermic reactions. Chemical properties
are properties associated with changes / chemical reactions, such as
reactivity, stability, ionization, and burning.
Some examples of the use of chemical reactions,
among others:
A. Making tape
B. Wood charcoal making
C. Frying process
D. The plating process, for example gold plating
E. Beverage industry
A. Making tape
B. Wood charcoal making
C. Frying process
D. The plating process, for example gold plating
E. Beverage industry
Characteristics
of Chemical Reactions:
1. Color Changes occur
In chemical reactions, the reactants are converted into products. Changes that occur can be caused by the breaking of bonds antaratom reactants and the formation of bonds that bru make the product. To break the bond needed energy. To form a new bond, it releases some energy. Thus, in chemical reactions there is a change of energy. The chemical reaction that produces energy in the form of heat is called an exothermic reaction. The reaction that absorbs heat energy is called the endothermic reaction.
Example: Fire can warm a cold body and when breathing heat exists in the body due to exercise is released so the body becomes cold.
2. Temperature Changes occur
In chemical reactions, the reactants are converted into products. Changes that occur can be caused by the breaking of bonds reagent antaratom and the formation of new bonds that make up the product. To break the bond needed energy.
Chemical reactions that produce energy in the form of heat are called exothermic reactions, while reactions that absorb heat energy are called endothermic reactions. Chemical reactions occur in a space we call dbngan system, where outside the system called the environment.
In the exothermic reaction, there is a transfer of heat energy from the sisitem to the environment.
In the endothermic reaction occurs the transfer of heat energy from the environment to the system.
3. Occurs Sediment Formation
When reacting two solutions in a test tube, it sometimes forms an insoluble, solid compound, separated from the solution. The solid is called precipitate.
4. Gas Formation occurs
Simply put, in the chemical reaction of the formed gas is indicated in the presence of bubbles in the reacted solution. The presence of gas can be known from its peculiar smell, such as sulfidic acid (H2S) and ammonia (NH3) that smells rotten.
In chemical reactions, the reactants are converted into products. Changes that occur can be caused by the breaking of bonds antaratom reactants and the formation of bonds that bru make the product. To break the bond needed energy. To form a new bond, it releases some energy. Thus, in chemical reactions there is a change of energy. The chemical reaction that produces energy in the form of heat is called an exothermic reaction. The reaction that absorbs heat energy is called the endothermic reaction.
Example: Fire can warm a cold body and when breathing heat exists in the body due to exercise is released so the body becomes cold.
2. Temperature Changes occur
In chemical reactions, the reactants are converted into products. Changes that occur can be caused by the breaking of bonds reagent antaratom and the formation of new bonds that make up the product. To break the bond needed energy.
Chemical reactions that produce energy in the form of heat are called exothermic reactions, while reactions that absorb heat energy are called endothermic reactions. Chemical reactions occur in a space we call dbngan system, where outside the system called the environment.
In the exothermic reaction, there is a transfer of heat energy from the sisitem to the environment.
In the endothermic reaction occurs the transfer of heat energy from the environment to the system.
3. Occurs Sediment Formation
When reacting two solutions in a test tube, it sometimes forms an insoluble, solid compound, separated from the solution. The solid is called precipitate.
4. Gas Formation occurs
Simply put, in the chemical reaction of the formed gas is indicated in the presence of bubbles in the reacted solution. The presence of gas can be known from its peculiar smell, such as sulfidic acid (H2S) and ammonia (NH3) that smells rotten.
Chemical
change is a change in substances that produce new substances with new
properties, which are called chemical reactions. Changes can not return to
their original form.
Characteristics of chemical changes of a substance, namely: the formation of a new type of substance, followed by changes in chemical properties through chemical reactions, and substances that have changed can not return to the form of steering (original).
During the process of chemical change, the mass of substances before the reaction is equal to.
The occurrence of chemical changes caused by:
1. Occasional happens
2. Occurs due to mixing of substances
3. As a result
4. Occurs from mixing two or more substances that produce a new kind of substance
Characteristics of chemical changes of a substance, namely: the formation of a new type of substance, followed by changes in chemical properties through chemical reactions, and substances that have changed can not return to the form of steering (original).
During the process of chemical change, the mass of substances before the reaction is equal to.
The occurrence of chemical changes caused by:
1. Occasional happens
2. Occurs due to mixing of substances
3. As a result
4. Occurs from mixing two or more substances that produce a new kind of substance
The cause and effect of chemichal
reaction
Acid rain
THE CAUSE OF ACID
RAIN
The occurrence of an event certainly there is why, as well as the phenomenon of acid rain. The occurrence of acid rain today is more often caused by various activities of men. And here are some of the causes of acid rain:
Sulfur and nitrogen produced by industry.
Sulfur and nitrogen generated by power plants.
Sulfur and nitrogen produced by motor vehicles.
Ammonia produced by agricultural activities.
The occurrence of an event certainly there is why, as well as the phenomenon of acid rain. The occurrence of acid rain today is more often caused by various activities of men. And here are some of the causes of acid rain:
Sulfur and nitrogen produced by industry.
Sulfur and nitrogen generated by power plants.
Sulfur and nitrogen produced by motor vehicles.
Ammonia produced by agricultural activities.
THE EFFECT THE ACID
RAIN
The incidence of acid rain has a detrimental effect on the earth and the life within it. And here are some of the effects of acid rain that threatens the earth and the life of mankind, please be listened carefully.
Causes respiratory distress in humans.
Causes corrosion of buildings.
Cause plants dry, wilt and die.
Damaging the aquatic ecosystem.
Destructive infrastructure (infrastructure) on earth.
That is a brief discussion of the understanding, causes, and impacts of acid rain. From the above discussion we can conclude that the occurrence of acid rain more due to human activity and we can change our lifestyle that can cause acid rain, for example by cycling to school or using public transport to the office.
The incidence of acid rain has a detrimental effect on the earth and the life within it. And here are some of the effects of acid rain that threatens the earth and the life of mankind, please be listened carefully.
Causes respiratory distress in humans.
Causes corrosion of buildings.
Cause plants dry, wilt and die.
Damaging the aquatic ecosystem.
Destructive infrastructure (infrastructure) on earth.
That is a brief discussion of the understanding, causes, and impacts of acid rain. From the above discussion we can conclude that the occurrence of acid rain more due to human activity and we can change our lifestyle that can cause acid rain, for example by cycling to school or using public transport to the office.
hi nina i want to ask about What causes what happens if the acid rain is prolonged?
BalasHapusAcid rain can damage and interfere with plant growth.
HapusAcid rain can damage existing buildings on the ground (rusted).
Acid rain can kill various air organisms.
Acid rain can increase the concentration of metals in the air.
Can you give an example of chemical change that produce new substances with new properties?
BalasHapusWhat if someone consume cingarettes in one day more than one pack? Explain waht happen to the person
Hapusokay for hana , 10 types of chemical changes:
Hapus1. Apples rotten
2. Paper burned to ashes
3. Dried leaves are processed into compost fertilizer
4. Burning gasoline on motor vehicles
5. Photosynthesis
6. Rice stale
7. Rusted iron
8. Soybean made tempe And know
9. Charcoal that comes from the responsibility of the log
10. Foods eaten in the body into feces
and for inggi jess ,
Hapus1. HAIR FALL. Cigarettes weaken the system
Immunity, so the body is more susceptible to
Diseases such as lupus erythematosus
Causing hair loss, mouth sores, and
Eruption of cutaneous (red spots) on the face, scalp
And hands.
2. CATARAK. Smoking is believed to be
Worsening eye condition. Cataract, that is
The bleaching of the obstructing eye lens
The inclusion of light that can cause
In fact, 40% occur in smokers. Cigarettes
Can cause cataracts by the way
Irritate the eyes with the release of substances
Chemicals in the lungs that the bloodstream carries
Up to the eye.
3. LEATHER SKIN. Smoking can cause
Premature ejaculation of the skin due to destruction of the protein
Which is useful for maintaining skin elasticity,
Vitamin A erosion, and stunted flow
blood. Smokers' skin becomes dry and wrinkled
Especially in the lips and eyes.
4. SKIN CANCER. Smoking does not cause
Melonoma, but smoking can cause
Increasing the likelihood of death due
The disease. It is suspected that smokers
At risk of suffering from cutaneous squamus cell cancer,
A type of cancer that leaves a spot on
skin.
5. LOSS OF HEARING. Because of tobacco
Causing precipitation on the walls
Blood vessels thereby inhibiting flow rate
Blood into the inner ear. Smoker
Can lose earlier than that person
Not smoking or easier to lose
Hearing due to hearing infection.
6. OSTEOPOROSIS. There is carbon monoxide, that is
Toxic chemicals found in many gases
Dispose of cars and cigarette smoke more easily bound
In the blood from oxygen, so that ability
Air to lift oxygen down 15% on
Smokers, consequently the bones of people who smoke
Loss of density becomes easier
Broken / cracked and healing 80% longer.
7. KARIES. Cigarettes affect balance
Chemically in the mouth, forming a plaque
Excessive, making teeth yellow, and
Caries occurs.
8. EMPHYSEMA. Emphysema is widening and
Damage to air sacs of the lung
Decrease the lung capacity to
Suck oxygen and release CO2.
9. Heart Disease. One in 3 deaths
In the world due to cardiovascular disease.
Tobacco use is one of the factors
The greatest risk for this disease. Cigarettes
Causes faster heart rate,
Increase the risk of hypertension and blockage
Arteries and ultimately lead to attacks
Heart or stroke.
10. CANCER. Cigarette smoke contains 40 kinds
Carcinogenic substances. The likelihood of cancer
Lung in smokers 22 times greater; tongue,
Mouth, salivary glands, and pharynx 6-7 times more
Besark; Cancer of the esophagus 12 times larger,
Oesophagus 8-10 times greater (WHO, 2002).
11. DISKLORI JARI-JARI. Tar found on
Cigarette smoke accumulates in the fingers and nails
Which leaves a yellow and brownish color.
12. POINT BACK. Tobacco consumption
Lowered resistance to bacteria
Causing peptic ulcers, also minimizing
The ability of the stomach to neutralize acid
Stomach after meal so will
Gnawing at the stomach wall. Stomach ulcers
In smokers is more difficult to cure.
13. UTERUS CANCER. Smoking can improve
Risk of cervical and uterine cervix. This cancer can
Caused by nicotine in the blood.
Why? Because of the cigarette smoke coming in
The body will soon spread throughout the body.
Nicotine substances that exist in cigarette smoke
Will trigger abnormal cell growth
Then become the culprit of the emergence of cancer cells
Cervix.
14. PSORIASIS. The development of psosiasis /
Noncotageous inflammation of the skin
Leaving a watery red spots and itchy 2-3 times
Is greater in smokers.
15. BEURGER DISEASES. That disease too
Known with this obliteran throaboanginosis
Is the occurrence of inflammation in the venous arteries and
The main nerve of the leg that results
Inhibition of blood flow and if left unchecked
No treatment will lead to gangrene
(The death of body cells) so patients need
be amputated.
Try to mention the positive and negative effects of chemical reactions and give examples?
BalasHapusPositive:
Hapus- making Nuclear Power Plant Materials
- develop pharmacological drugs
- develop pesticides
- developing artificial fertilizer for agriculture
- testing of food content
Negative
- create mass exterminator
- explosives
- toxic materials
- habitat destroyers
- environment destroyer
Why should we know the cause and effect of chemical reactions, and which chemical reactions are most dangerous?
BalasHapusThe top 5 most dangerous chemicals I have ever herd of. The full viedo can be found on the SciShow YouTube channel and it is a lot funnier and better than my cliff notes version so check that out if you have time, otherwise read on, but seriously the video is better and can be found here SciShow
HapusChlorine trifluoride (ClF3), this chemical burns everything even things that have already been burnt. It explodes on contact with water, boils in air, toxic to breath in and decomposes into hydrofluric acid. America spilt some of this stuff by accident and it burnt through concrete and a metre into the ground.
Azidoazide Azide (C2N14), this is the most explosive chemical compound ever made. When made by a German company that specialise in making dangerous chemicals made and tested it to see how sensitive it was the results were inconclusive. Examples of what made it explode were exposure to light, exposure to air, placing in a spectrometer, turning on the spectrometer and absolutely nothing they had it in a shock proof box in a temperature controlled environment and one day it just blew up.
Dimethylcadmium (CH3-CD-CH3), this chemical is toxic very, very toxic it has both acute and chronic effects in short if it doesn't kill you straight away it will give you cancer just to spite you. Oh and if you spill it, it explodes on contact with water, friction makes it explode too and the smell is ungodly.
Thioacetone (C3H6S) this is the smelliest chemical ever made. A soap company on the German Swiss boarder made this chemical by accident and it made people up to half a mile away vomit uncontrollably the end result was the evacuation of the entire city.
Fluoroantimonic Acid (H2FSbF6), this is a super acid it eats everything it is 10,000,000,000,000 times stronger than sulphuric acid and once the acid has eaten your skin the remaining fluorine will burn through your bones because of it reactivity with calcium. The only thing it doesn't eat is Teflon and as such it isn't very testable.
So there you have it 5 of the most dangerous chemicals ever made by anyone ever. Credit must be given to Scishow where I first learnt about these marvels of chemistry. Even if you know how I would suggest you don't try this at home you will probably get hurt.