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Only reactions that show a change in color, effervescence, and disappearance of one of the reactants provide the visual evidence. Some reactions, such as the reaction between Hydrochloric acid and Sodium Hydroxide, do not provide any visual evidence because there is no change in color of the solution, no effervescence, and no disappearance of a reactant.

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What is visual intrusion?

Visual intrusion occurs when a person's line of sight is disrupted or obstructed by an unwanted visual element in their environment. This can include things like billboards, overhead power lines, or other structures that disrupt the natural visual landscape. Visual intrusion can be a concern in urban planning and design, as it can impact the aesthetic quality and visual experience of a place.


What are all reactions in the body called?

Generally in a body two type of reactions take place, catabolic and anabolic. Catabolic reactions are the type of reactions in which bio-molecules in our body split into their constituents to release energy; while anabolic reactions are those reactions in which new bio-molecules are synthesized in our Body. Together both reactions are known as METABOLISM.


What are the patterns of combustion reaction?

Combustion reactions involve a fuel (hydrocarbon) reacting with oxygen to produce carbon dioxide and water. The general pattern is: fuel + oxygen -> carbon dioxide + water. Combustion reactions are exothermic, releasing heat and light energy.


What changes gives NO evidence that a chemical reaction has taken place?

Changes such as a change in state (solid to liquid), change in color, change in odor, change in solubility, or change in temperature do not provide direct evidence that a chemical reaction has occurred. These changes can be indicative of a physical change rather than a chemical change. To confirm a chemical reaction, additional evidence such as the formation of new substances, evolution of gas, or consumption of reactants is necessary.


Are all combustion reactions redox reactions?

Sometimes, as during oxidation reactions oxygen is either added or hydrogen is removed from that particular element or compound undergoing the reaction. Combustion is burning taking place in the presence of oxygen so when the certain substance burns it is having oxygen added to it. Eg. 2Mg + O2 gives 2MgO Here Mg is getting oxidised and combustion is taking place as Mg is being heated in the presence of Oxygen.

Related Questions

The reactions that produce molecular oxygen (O2) take place in?

The reactions that produce molecular oxygen (O2) take place in the light-dependent reactions of photosynthesis, specifically in the thylakoid membranes of the chloroplasts. Here, water molecules are split through a process called photolysis, releasing oxygen as a byproduct.


Where can one learn how to produce visual effects?

The best place where one could go to learn how to produce cinematic visual effects is the internet. There are sites such as Smashing Magazine and No Film School that offer this information.


What do the nuclear reactions that take place in the sun produce?

Helium plus released energy (heat)


Were chemcal reaction takes place cell organelles?

Chemical reactions take place in various cell organelles. For example, in mitochondria, reactions like cellular respiration occur to produce energy. In the nucleus, reactions like DNA replication and transcription occur. And in the cytoplasm, reactions like protein synthesis take place.


Where does the Light (dependent) reaction take place?

The light dependent reaction take place in the thylakoid of the chloroplast


Where do nearly of the body's chemical reactions including those that produce energy and build new tissues take place?

in the liver


Where do nearly all of the body's chemical reactions include that produce energy and build new tissues take place?

in the liver


Where do the light-idependent reactions pf photosynthesis take place?

The light-independent reactions of photosynthesis take place in the stroma of the chloroplasts. This is where carbon fixation and the Calvin cycle occur, utilizing the products of the light-dependent reactions to produce glucose.


What is the place where controlled nuclear fission reactions take place?

The place where controlled nuclear fission reactions take place is called a nuclear reactor. In a nuclear reactor, uranium atoms are split in a controlled manner to produce heat energy, which is used to generate electricity.


Where do nearly all the body's chemical reactions including those that produce energy and build new tissues take place?

in the liver


Where do nearly all the body's chemical reactions including those that produce energy and build new tissue take place?

in the liver


Where do nearly all of the bodies chemical reactions including those that produce energy and build new tissues take place?

in the liver