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Why does a change in teperature indicate that a change reaction may have occured?
Chemical reactions that involve bond-breaking tend to absorb energy from the surroundings, making the surroundings cooler. Chemical reactions that involve making bonds release energy, which makes the surroundings hotter. An example of a temperature change in a chemical reaction is when a burning fire produces heat.
What does it mean if the change in enthalpy value for a chemical reaction is positive?
A positive change in enthalpy for a chemical reaction indicates that the reaction is endothermic, meaning it absorbs heat from its surroundings. This typically results in the surroundings feeling cooler.
How does endothermic reactions affect room temperature?
Endothermic reactions absorb heat from their surroundings, resulting in a decrease in temperature in the room where the reaction takes place. This can make the room feel cooler as the reaction uses up the heat energy present in the environment.
If a gas condenses to liquid will it make its surroundings warmer or cooler?
Much warmer.
Is sparkler burning endothermic or exothermic?
Endothermic reactions take in heat from the surroundings (and make it cooler), exothermic reactions give out heat to the surroundings making it hotter. Get too close to a sparkler and you'll find it is very hot! This is because it is an exothermic reaction.
What is the difference between an exothermic and an endothermic chemical reaction?
In an exothermic reaction, energy is released in the form of heat, making the surroundings warmer. In contrast, an endothermic reaction requires energy input from the surroundings to proceed, making the surroundings cooler as it absorbs heat.
When propane reacts with oxygen does the surroundings area become warmer or cooler?
The surroundings become warmer when propane reacts with oxygen as it undergoes combustion, releasing heat energy as a byproduct of the reaction.
Why does a change in teperature indicate that a change reaction may have occured?
Chemical reactions that involve bond-breaking tend to absorb energy from the surroundings, making the surroundings cooler. Chemical reactions that involve making bonds release energy, which makes the surroundings hotter. An example of a temperature change in a chemical reaction is when a burning fire produces heat.
What happens in an endothermic reaction and how does it differ from an exothermic reaction?
In an endothermic reaction, energy is absorbed from the surroundings, causing the surroundings to feel cooler. This is in contrast to an exothermic reaction, where energy is released into the surroundings, causing them to feel warmer.
What is an exothermic reaction and how does it differ from an endothermic reaction?
An exothermic reaction releases heat energy, while an endothermic reaction absorbs heat energy. In an exothermic reaction, the surroundings get warmer, whereas in an endothermic reaction, the surroundings get cooler.
What is different between exothermic and endothermic reactions?
If energy is released as a result of a process, an exothermic change has taken place. If a constant input of energy is required to drive a physical or chemical change, the change is described as endothermic.
What does it mean if the change in enthalpy value for a chemical reaction is positive?
A positive change in enthalpy for a chemical reaction indicates that the reaction is endothermic, meaning it absorbs heat from its surroundings. This typically results in the surroundings feeling cooler.
Why do some areas of the photosphere become cooler than surroundings areas?
because of you
How do you determine if a reaction is endothermic?
An endothermic reaction is determined by observing if heat is absorbed or taken in during the reaction. If the surroundings feel cooler or if the temperature decreases during the reaction, it is likely endothermic.
A blank reaction is a reaction in which energy is absorbed?
In a blank reaction, energy is absorbed from the surroundings, causing the surroundings to feel cooler. This is an endothermic reaction because energy is required for the reaction to occur. Examples include melting ice or mixing ammonium nitrate with water.
Are sunspots hotter than the surroundings?
No, they are cooler.
Why does ammonium nitrate get cold in water?
When ammonium nitrate dissolves in water, it absorbs energy from the surroundings to break the bonds between its ions. This absorption of energy causes the surroundings to become cooler, leading to a decrease in temperature.
