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Exothermic

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Q: What type of reaction occurs if two substances are chemically combined and there is a release of energy?
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Why The non-metals do not show displacement reaction?

Because during this reaction no new substances release.


Why the non metals do not show displacement reaction?

Because during this reaction no new substances release.


Is typical of an endothermic reaction?

Endothermic reactions are characterized by the release of heat during the reaction. A typical example is the combustion of methane, which when combined with oxygen releases water and carbon dioxide.


Is biomass chemical energy?

As it decays bacteria catalyses a chemical reaction to release methane and heat. When you burn it a chemical reaction occurs between the biomass and oxygen that releases light and heat. Biomass contains potential energy that can be chemically released.


What would you expect from an endothermic reaction?

Endothermic reactions are characterized by the release of heat during the reaction. A typical example is the combustion of methane, which when combined with oxygen releases water and carbon dioxide.


What substances to animals release to the environment?

There are various substances that animals release to the environment. Carbon dioxide is one of substances which is then taken in by plants for purposes of photosynthesis.


What kind of energy conversions take place in a match?

The thermal energy released when you strike a match comes from chemical energy of the substances that make up the match head. These substances go through a chemical reaction to give different new substances (products) with less energy (considered at the initial temperature), and thermal energy that flows to the surroundings (heat) at a lower temperature.


If oxygen is required for combustion why is water used to put out fire although it contains a large amount of oxygen?

When people say you need oxygen for a fire, they mean elemental oxygen, O2, in which it is not chemically combined with anything else. In a fire oxygen chemically combines with some flammable material to form new substances and release energy. The oxygen in water is already combined with hydrogen and the energy is essentially already released. In fact, you get water as a product when you burn hydrogen gas or a flammable hydrogen compound. Water is used to put out fires mainly because it is very good at absorbing heat, and so can rob a fire of the heat it needs to keep burning. As a secondary effect, it can also cut off a fire's oxygen supply.


What happens to the energy release of an exothermic reaction?

The energy release of an exothermic reaction is released to the surroundings.


When two substances are mixed together a chemical reaction may take place. Which of the following characteristics indicates a high chemical reactivity for one or more of the reagents?

the release of large amounts of heata rapid or instant reactionthe release of large amounts of gasall of these


Which type of reaction of gasoline to release heat?

A chemical reaction


What substances do the plants release to the environment?

oxygen