Exothermic and Endothermic Reactions of Different Substances
Learn about the concepts of exothermic and endothermic reactions, featuring specific substances like sodium hydroxide, lithium nitrate, ammonium nitrate, crystalline ammonium nitrate, and potassium bromide. Discover their properties, uses, and how they interact with water. Explore how these reactions impact temperature changes and find out where exothermic and endothermic substances are commonly utilized in everyday applications.
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Presentation Transcript
exothermic and endothermic changes of some substances when dissolved in water Made By: Zaid Zeidan
What are Exothermic and Endothermic Reactions Endothermic An endothermic reaction is when a substance doesn t have enough energy to mix with the other so it takes in energy from its surroundings. They often have a negative change in temperature Exothermic An exothermic reaction is when a substance releases energy to the surroundings. Usually and exothermic reaction has a positive change in temperature
Substances Used Firstly for our exothermic substances we used sodium hydroxide and lithium nitrate and for our endothermic substances we used ammonium nitrate, crystalline ammonium nitrate and potassium bromide
Properties Sodium Hydroxide is exothermic and is crystal like at room temperature and it also has a high melting point. Ammonium Nitrate is endothermic and its highly soluble Lithium nitrate is a white, crystalline solid at room temperature. It is soluble in water and forms a clear, colorless solution. Crystalline ammonium nitrate typically appears as white, colorless crystals or granules. It is highly soluble in water and forms an aqueous solution Potassium bromide is a white, crystalline solid at room temperature. It is highly soluble in water and forms a clear, colorless solution.
What they are used In Mostly, Exothermic substances are used for heating yourself. They are mostly used in heating systems in houses and they Hare used to generate power. However endothermic substances are used in cooling systems like refrigerators in your home or freezers they are also used in air cooling systems.
