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a precipitate is a solid that forms during a chemical reactions

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What are Two main kinds of changes that you can observe when chemical reaction occur?

a precipitate is a solid that forms during a chemical reactions


Two mains kinds of changes that you can observe when chemical reactions occur?

ripping a towel, or breaking a glass window


What Kinds of chemical changes?

Exothermic reactions. E.g. combustion, oxidation


What two main kinds of change that you can observe when chemical reactions occur?

ripping a towel, or breaking a glass window


What chemical reactions involve two main kinds of changes?

formation of new substances!!


What are some kinds os chemical changes that release energy?

Some examples of chemical changes that release energy include combustion reactions (burning of fuel), oxidation reactions (rusting of iron), and exothermic reactions such as the reaction between acids and bases. These reactions typically result in the production of heat, light, or sound.


What are some kinds of chemical changes that release energy?

Some examples of chemical changes that release energy include combustion reactions, oxidation reactions, and certain types of nuclear reactions. These reactions typically involve the breaking of chemical bonds and the formation of new, more stable bonds, resulting in the release of energy in the form of heat or light.


What kinds of chemical reactions produce water?

Chlorine


When two clear iquids make yellow is it a chemical change?

Chemical change: The clear liquids are potassium iodide and lead nitrate. When mixed, they form a new chemical--lead iodide.


What are the two main kinds of changes that can occur when chemical reactions occur?

color change. thats the one i know but i dont know the other one unless its gas formation


What is one other change in chemical changes?

There are many different kinds of chemical reactions, which involve many different kinds of chemical changes. All of these changes are observable, but some are more easily observable than others. Fire is an example of a chemical change that is extremely obvious and easily observed. When a piece of wood burns, it is changed into ash, as well as gases which are temporarily visible in the form of flame. We observe a dramatic change in temperature, since fire produces a lot of heat. Solid logs can be turned into gaseous carbon dioxide and water vapor, along with ashes and various other combustion products. But fire is not the only kind of chemical reaction. You can take two transparent aqueous solutions, mix them together, and have a chemical reaction take place that is invisible to the eye, but which can be analysed with various tests or equipment. One protein can be transformed into another protein, and both types of protein can look exactly the same. Chemical identity can be very subtle. Some chemical reactions involve visible changes of color, but most do not. Chemical reactions can produce lots of heat, or very little heat (but with a sensitive thermometer, you can detect even small changes in temperature). Chemical reactions can cause a change of phase (as from solid to gas) but they usually don't. Chemical reactions can alter solubility, so that an insoluble product is formed, which as a result causes a visible precipitate. There are many other possible results of a chemical reaction.


How many different kinds of chemical reactions can one kind of enzyme control?

hundereds