0
What else can I help you with?
Is it possible for the change in enthalpy, represented as H, to have a negative value in a chemical reaction?
Yes, it is possible for the change in enthalpy (H) to have a negative value in a chemical reaction, indicating that the reaction releases heat energy.
Is burned ethanol a physical or chemical change?
Burning anything (a liquid or a solid) is a chemical change and the reaction is known as a combustion reaction.
When ice melts is it a physical change or a chemical change?
It is a physical change. There is no chemical reaction whatsoever.
Why is a phase change not a chemical reaction?
A phase change is a physical change that involves rearranging the molecules in a substance without changing its chemical composition. In contrast, a chemical reaction involves the breaking and forming of chemical bonds, resulting in the formation of new substances with different chemical compositions.
What kind of chemical reaction is waterfall?
A waterfall is a physical process, not a chemical reaction. It involves the flow of water over terrain due to gravity, and does not involve a chemical change in the water molecules themselves.
What is the only part of a chemical reaction that you can change?
The molecules of the reactants.
What makes a chemical reaction different from a physical change?
In a chemical reaction, atoms are rearranged, such that some atoms get out of some molecules and join other molecules.
Is solubilty the same as a chemical Change?
Solubility is forming of chemical bonds between solute molecules and solvent molecules, hence a chemical reaction.
Does decomposition have chemical reactions with different molecules trade position?
A decomposition reaction does not involve molecules trading positions. When two different molecules or pairs of molecules change position with one another, the chemical reaction is known as an exchange reaction.
Is it possible for the change in enthalpy, represented as H, to have a negative value in a chemical reaction?
Yes, it is possible for the change in enthalpy (H) to have a negative value in a chemical reaction, indicating that the reaction releases heat energy.
Is ice melting. A chemical reaction?
No, it's a physical reaction because it is still water just in a different form.
What can you talk about as a chemical reaction?
Some indicators of a chemical reaction are: - change of color - change of odor - release of a gas - change of the temperature - change of the viscosity - formation of a precipitate - change of general appearance - possible explosion - possible chemiluminiscence
Is burned ethanol a physical or chemical change?
Burning anything (a liquid or a solid) is a chemical change and the reaction is known as a combustion reaction.
When ice melts is it a physical change or a chemical change?
It is a physical change. There is no chemical reaction whatsoever.
Is it a chemical reaction when a substance changes its form?
The change of form in not a chemical process; it is only a physical change, the molecules remain unchanged.
Why is rusting a chemical change?
Rusting is a reaction which combines molecules to form other molecules: metal + oxygen -> rust. The definition of a chemical reaction is molecules turning into other molecules, so rusting is a chemical reaction.
What are 3 conditions that necessary for a reaction to occur?
There are many factors that affect the occurance of a chemical reaction. If the reaction you are using has any buffer or catalyst than you should be selective in that keeping in mind your reactants and product. The temperature required for any particular reaction to occur should also be kept in mind.
