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Energy can either decrease or increase during a chemical reaction depending on whether it is an exothermic reaction (energy is released) or an endothermic reaction (energy is absorbed). In an exothermic reaction, energy is released in the form of heat, and in an endothermic reaction, energy is absorbed from the surroundings.
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Why does the temperature increase and decrease during neutralization?
During neutralization, an acid and a base react to form water and a salt. This reaction is usually exothermic, releasing heat and causing the temperature to increase. As the reaction progresses and reaches completion, the temperature may then decrease as the system returns to equilibrium.
How change will decrease the number of effective collisions during a chemical reaction?
An increase in temperature will lead to an increase in the kinetic energy of molecules, causing them to move faster and collide more frequently. This will result in more effective collisions during a chemical reaction.
How might a thermometer help you decide if there was any chemical change on mixing iron and charcoal?
A thermometer can help you determine if there was a chemical change by measuring any temperature change that occurs during the reaction of iron and charcoal. If there is a noticeable increase or decrease in temperature, it could indicate a chemical reaction took place, as chemical reactions often involve the release or absorption of heat energy.
Does a chemical change effect mass?
Yes, a chemical change does affect mass. This is because during a chemical reaction, new bonds are formed or broken, leading to a rearrangement of atoms. This can result in either an increase or decrease in mass.
When two or more substances are combined the temperature of the reaction will?
When two or more substances are combined, the temperature of the reaction may increase or decrease depending on the specific reaction. This change in temperature is due to the release or absorption of energy during the chemical reaction.
Does the temperature increase or decrease when energy is released during a chemical reaction?
The temperature increases when energy is released during a chemical reaction. This is because the energy released is typically in the form of heat, which raises the temperature of the surroundings.
Why does the temperature increase and decrease during neutralization?
During neutralization, an acid and a base react to form water and a salt. This reaction is usually exothermic, releasing heat and causing the temperature to increase. As the reaction progresses and reaches completion, the temperature may then decrease as the system returns to equilibrium.
How change will decrease the number of effective collisions during a chemical reaction?
An increase in temperature will lead to an increase in the kinetic energy of molecules, causing them to move faster and collide more frequently. This will result in more effective collisions during a chemical reaction.
A substance that shows a decrease in oxidation number during chemical reaction?
A substance that shows a decrease in oxidation number during a chemical reaction is being reduced. Reduction involves a decrease in the oxidation number of an element. This indicates a gain of electrons by the substance.
How will you judge whether a chemical reaction is exothermic or endothermic in nature?
A chemical reaction is exothermic if it releases heat to its surroundings, causing an increase in temperature. On the other hand, a reaction is endothermic if it absorbs heat from its surroundings, resulting in a decrease in temperature. This can be determined by measuring the temperature change during the reaction or by analyzing the enthalpy change of the reaction.
How might a thermometer help you decide if there was any chemical change on mixing iron and charcoal?
A thermometer can help you determine if there was a chemical change by measuring any temperature change that occurs during the reaction of iron and charcoal. If there is a noticeable increase or decrease in temperature, it could indicate a chemical reaction took place, as chemical reactions often involve the release or absorption of heat energy.
What is the definition of catalysis?
Catalysis is the action to increase the reaction rate of a chemical reaction using substances called catalysts which are not transformed during this reaction.
Does a chemical change effect mass?
Yes, a chemical change does affect mass. This is because during a chemical reaction, new bonds are formed or broken, leading to a rearrangement of atoms. This can result in either an increase or decrease in mass.
Does the total amount of mass during a chemical reaction increase?
The total mass of the compounds remain constant.
When two or more substances are combined the temperature of the reaction will?
When two or more substances are combined, the temperature of the reaction may increase or decrease depending on the specific reaction. This change in temperature is due to the release or absorption of energy during the chemical reaction.
What is the effect of a chemical changes on the mass of matter?
Chemical changes can cause the mass of matter to change. During a chemical reaction, bonds between atoms are broken and new bonds are formed, leading to the rearrangement of atoms. This can result in either an increase or decrease in the overall mass of the substances involved in the reaction.
What undergoes no chemical change during a chemical reaction?
A catalyst undergoes no chemical change during a chemical reaction.
