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Why might the actual energy change for a reaction be different from the predicted energy change?
The actual energy change for a reaction might be different from the predicted energy change due to experimental errors, incomplete reactant conversion, side reactions, impurities in reactants, or inaccurate assumptions about reaction conditions. Kinetic factors such as reaction rates and temperature variations during the reaction can also contribute to discrepancies between predicted and actual energy changes.
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Is a change that produces a new element a physical change?
No, it is a chemical change. ---------------------------------- Yes, it is a physical change because this change not involve a chemical reaction but a nuclear reaction followed by a change in the number of protons and neutrons.
What does a transmutation reaction always have to involve?
A transmutation reaction always involves a change in the identity of the atoms involved, resulting in the formation of different elements. This can be achieved through processes like radioactive decay or nuclear fusion.
What type of change produces a new substance?
A chemical change produces a new substance. This occurs when the original substances undergo a chemical reaction, resulting in the formation of new substances with different chemical properties.
Can a catalyst alone make a nonspontaneous reaction occur spontaneously Explain why or why not.?
No, a catalyst alone cannot make a nonspontaneous reaction occur spontaneously. A catalyst can only speed up the rate of a reaction by lowering the activation energy, but it cannot change the overall thermodynamics of the reaction. In order for a nonspontaneous reaction to occur spontaneously, the reaction must have a negative change in Gibbs free energy (G) value.
What is actual motion?
Actual motion refers to the physical movement of an object from one position to another in space. It involves a change in an object's location or orientation relative to a reference point. It is different from perceived or apparent motion, which may appear to be occurring but is not actually resulting in physical displacement.
What is the relationship between the standard Gibbs free energy change (G) and the actual Gibbs free energy change (G) in a chemical reaction?
The relationship between the standard Gibbs free energy change (G) and the actual Gibbs free energy change (G) in a chemical reaction is that the standard Gibbs free energy change is the value calculated under standard conditions, while the actual Gibbs free energy change takes into account the specific conditions of the reaction. The actual Gibbs free energy change can be different from the standard value depending on factors such as temperature, pressure, and concentrations of reactants and products.
What overall change does an atom have?
Dalton predicted that the atom of any element are different from the atoms of all other elements.
What is The new and different substances formed as a result of a chemical change?
The new and different substances formed as a result of a chemical change (reaction) are the products of the reaction.
When a substance change into a different substance it is called what?
This is a chemical reaction.
What is another term for chemical change?
A chemical change is also referred to as a chemical reaction. It typically involves the transformation of substances into new substances with different chemical compositions.
What is the difference between the heat (q) of a reaction and the reaction enthalpy (Hrxn)?
The heat (q) of a reaction is the amount of energy transferred as heat during a chemical reaction, while the reaction enthalpy (Hrxn) is the overall change in heat energy of a reaction at constant pressure. The main difference is that heat (q) is the actual energy transferred, while reaction enthalpy (Hrxn) is a measure of the total heat change in a reaction.
Is a catalysed reaction the same as a chemical reaction?
Yes, the only difference is that a catalyst is used to change the activation energy of the reaction, so the reaction will occur at a different rate.
Is a change in mass an indicator of chemical reaction?
A change in mass can be an indicator of a chemical reaction if there is a conversion of reactants into products with different mass compositions. For example, if gas is released during a reaction or if there is a change in the number of moles of substances present, there may be a noticeable change in mass.
Is the reaction between aluminum and copper chloride a physical or chemical change?
The reaction between aluminum and copper chloride is a chemical change. During the reaction, a chemical reaction occurs resulting in the formation of new substances with different properties than the original reactants. This is different from a physical change where substances maintain their original properties.
Why is iron changing to rust a chemical change?
As changing Iron to Rust is changing the actual chemical elements of the compound. It becomes Iron Oxide, or Iron with an Oxygen reaction having taken place so that the material is different.
What is a chemical reaction and how are reaction and products involved?
A chemical reaction is a change in which one kind of matter changes into a different kind of matter with different properties. Reactant is a substance used in a chemical reaction and a product is a substance made in a chemical reaction. Hope this is helpful! ;)
Is ice melting. A chemical reaction?
No, it's a physical reaction because it is still water just in a different form.
