Isn t that spoilage? What is metamorphism?

1. First of all, we need to know what the meat spoils like, pick up the meat and smell it, if there is an unpleasant smell. It is likely that it has gone bad. If the meat is found to have a rainbow film on it, the meat will.

2. Meat that has been kept outside the refrigerator or freezer for a long time may spoil. Leaving the meat at room temperature for a long time increases the likelihood that it will spoil. Best.

The law of mutual change of quality is the second basic law of materialist dialectics. It reveals the two states of quantitative change and qualitative change in the development of things, as well as the development process from quantitative change to qualitative change and then to new quantitative change determined by the internal contradictions of things. This law provides a system in which the development of things is qualitative and quantitative.

1. Principles and methods of observing things in a continuous and phased unity.

Introduction: Metamorphosis (biàn zhì) refers to the transformation of the essence of a person's mind or thing from the original (mostly pointing to the transformation of the bad aspect): metamorphosis|Spoiled food.

Metamorphosis is the damage process caused by inflammatory factors, which is seen in the morphology of local cell and tissue metabolism and physicochemical property changes. Xu Teli, "Let the Red Flag of the Revolution Be Passed on from Generation to Generation": "If the things in our minds are not right, the revolutionary will may decline, we will be greedy for comfort, we will enjoy ourselves, we will forget our roots, we will deteriorate, and we will even become people who exploit others."

Lu Xun's "Hot Wind: Reflections Forty-Nine": "At this time, teenagers can only chlorosis first, and then come to activities when they are old in the future and all the neurovascular deterioration.

1. Quantitative change is the increase or decrease in the quantity of things. Quantitative change is characterized by a gradual, continuous, and insignificant change, which is a change in the relatively static state of things in the process of development. The system we see in our daily lives.

1. Equilibrium, relative stillness, etc., are all states shown by things in the stage of quantitative change. 2. Qualitative change is a change in the fundamental nature of things. Qualitative change is characterized by a fundamental and significant change, an interruption in the gradual process of things.

The decomposition of the unity seen in daily life or the destruction of the state of holding, equilibrium, and stillness, are all states embodied in the process of qualitative change. Materialist dialectics holds that quantitative change and qualitative change are the two basic states of development and change of things. The development and change of anything cannot be without quantitative change, nor can it be without qualitative change, but the unity of quantitative change and qualitative change.

1. Quantitative change is the preparation for qualitative change The change of any thing starts from quantitative change, and quantitative change is a necessary preparation for qualitative change, and only when the accumulation of quantity reaches a certain level, will it cause qualitative change. 2. Qualitative change is the inevitable result of quantitative change Quantitative change will not last forever, when the accumulation of quantity reaches a certain level, it will inevitably cause qualitative change and become something of another nature. On the one hand, quantitative change is transformed into qualitative change, quantitative change is the necessary preparation for qualitative change, and qualitative change is the inevitable result of quantitative change.

This shows that quantitative change is both necessary and inevitable for qualitative change, and there is no qualitative change without quantitative change. On the other hand, qualitative change can not only complete quantitative change, reflect and consolidate the results of quantitative change, but also open up the way for new quantitative change. This shows that qualitative change is both inevitable and necessary for quantitative change, and only qualitative change can produce new things and develop the world.

Therefore, the recognition or non-recognition of qualitative change is one of the important markers that distinguish the two views of development, dialectics and metaphysics. The concept of development of dialectics is the same as only acknowledging qualitative change and denying quantitative change"Cataclysm"It is different from the vulgar evolutionary theory, which only recognizes quantitative change and denies qualitative change.

The transformation of qualitative things from one qualitative state to another. One of the basic states of the movement of things. The same amount becomes relative.

Also known as mutations. Qualitative change occurs on the basis of quantitative change, marking the interruption of the gradual process of quantity. The qualitative change of things is rooted in the internal contradictory movement of things.

When the struggle of internal contradictions intensifies, causing a fundamental change in the primary and secondary positions of the two sides of the basic contradiction, and the non-principal contradiction aspect that was originally in the dominant position rises to the main aspect that determines the nature of things, one thing is transformed into another thing of different qualities. The qualitative change of things disintegrates the original qualitative unity of things, destroys the relative static state of things, and breaks through the original degree of things, thus showing significant, rapid and drastic changes. Qualitative change plays an important role in the development of things.

Qualitative change is the decisive link in the development of things, and it is the basis for the creation of the world's many different things and their rich personalities.

In the process of qualitative change, things are in a state of significant change, and qualitative change is generally obvious, sudden, and discontinuous, so it is also called a leap, an interruption or revolution in the gradual process.

Spoiled, including partially spoiled and completely spoiled, in either case, can be distinguished by dilute sulfuric acid (or dilute hydrochloric acid, dilute nitric acid and other strong acids).

Sodium hydroxide. When the solution reacts with dilute sulfuric acid, sodium sulfate and water are formed, but if sodium hydroxide deteriorates, it most likely absorbs carbon dioxide from the air.

It will become sodium carbonate.

It reacts with dilute sulfuric acid to produce bubbles, that is, sodium sulfate, water and carbon dioxide, which can make the clarified lime water turbid.

Note that this deterioration cannot be tested with colorless phenolphthalein test solution, purple litmus test solution, and green bromothymol blue test solution, because the aqueous solution of sodium carbonate is alkaline, which can also make the colorless phenolphthalein test solution red, the purple litmus test solution blue, and the green bromothymol blue test solution blue.

The metamorphic effect of coal refers to the process of transforming lignite into bituminous coal and bituminous coal. Temperature, pressure and the internal duration of DAO action are the main factors of coal metamorphic capacity. In the process of metamorphism, the internal structure, chemical composition, physical characteristics and process performance of coal all change regularly.

Among the three factors, the temperature factor is the most important, because the temperature promotes chemical changes in the aromatic structure of vitrinite, the reduction of functional groups and bonds, the shortening of chains, and the polycondensation of coal, so that the degree of metamorphism of coal increases. The time factor refers to the duration of the coal's heating, and the longer the coal lasts when the coal is subjected to temperatures higher than 50 60, the higher the degree of deterioration of the coal. The relationship between the above time factor and temperature factor is mainly for the metamorphism of plutonic metamorphism.

As for the thermal metamorphism and contact metamorphism of regional magma, due to the high temperature of the magma and the short heating time, there are few quantitative studies. In terms of heating duration, plutonic metamorphism was the longest, followed by regional magmatic thermal metamorphism, and contact metamorphism was the shortest. Pressure is an indispensable factor for coal deterioration, which mainly promotes the change of the physical structure of coal.

Because coal is more sensitive to temperature and pressure than the surrounding rock, when lignite becomes bituminous coal or anthracite, the surrounding rock generally does not deteriorate. Therefore, the transformation from lignite to bituminous coal and anthracite is actually only roughly equivalent to the diagenesis of sedimentary rocks; The further conversion of coal into graphite and natural coke is comparable to the metamorphism of sedimentary rocks. But in the case of coal, it is called metamorphism.

Metamorphism: Earth's crust.

Under the influence of crustal movement and magmatic activity, the rocks that have been formed in Bai have undergone changes in mineral composition, knots, and tectonics, and the action that causes such changes is called metamorphism.

Rocks that have undergone metamorphism are called metamorphic rocks. The main factors that cause the metamorphism of rocks are changes in temperature and pressure, as well as reactive gases and solutions.

Distinctive: Qualitative change, which refers to the transformation of one substance into another, is a qualitative transformation. There are no gains or losses. Deterioration refers to the change of a substance to its original state. It is from good to bad, and qualitative change has no such meaning. The common denominator is "change".

Qualitative change is like boiling water, in the process of slowly boiling, when it reaches the point of boiling, some water will become water vapor. That is to say, when a certain amount is reached, a lot of things that have accumulated will change, and deterioration is a chemical change, and when the food is left for a long time, it will become moldy and smelly, which is spoilage.

The transformation of things from one qualitative state to another. The essence of a person's mind or thing becomes different from the original (mostly pointing to a change in the bad aspect): degenerationSpoiled food.

Qualitative change refers to the deterioration of human nature, and spoilage is the spoilage of food.

Qualitative change means that the essence has changed, and metamorphism is the superficial change, but the essence has not changed.