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Is electrolysis of water to form hydrogen and oxygen a physical or chemical change?
It is a chemical change because you are breaking the water into its elements, hydrogen and oxygen, and it is no longer water. I NEED THE NUMBER'S ^ Here They are Oxidation of ions or neutral molecules occurs at the anode, and the reduction of ions or neutral molecules occurs at the cathode. For example, it is possible to oxidize ferrous ions to ferric ions at the anode:Fe2+ aq → Fe3+ aq + e- It is also possible to reduce ferricyanide ions to ferrocyanide ions at the cathode:Fe(CN)3- 6 + e- → Fe(CN)4- 6
What happens to the mass of 40g of i c e cubes when they melt?
Nothing. Ignoring evaporation, the mass stays the same as ice turns to water. It's a physical change, not a chemical.
What is the Delta E chemistry formula used to calculate the change in energy of a chemical reaction?
The Delta E formula in chemistry is used to calculate the change in energy of a chemical reaction. It is represented as E E(final state) - E(initial state), where E is the change in energy, E(final state) is the energy of the system in its final state, and E(initial state) is the energy of the system in its initial state.
Does mass of ingredients change during a physical changes?
it is neither. no chemical reaction or physical change (melting boiling etc) can change net mass only nuclear reactions change the over all mass by converting mass to energy via Einstein's famous E=MC^2 equation
What has the author E A Moelwyn-Hughes written?
E. A. Moelwyn-Hughes has written: 'The chemical statics and kinetics of solutions' -- subject(s): Chemical equilibrium, Chemical kinetics, Solution (Chemistry) 'A short course of physical chemistry' -- subject(s): Physical and theoretical Chemistry 'The kinetics of reactions in solutions' -- subject(s): Chemical reactions, Solution (Chemistry) 'Physical chemistry' -- subject(s): Physical and theoretical Chemistry, Quantum chemistry, Quantum theory
Is electro plating a physical or chemical change?
Galvanizing is a physical change. This is because the zinc is coated on the Iron using the magnetic properties of the elements. In the chemical changes a new substance is formed, here the zinc only forms a layer on the Iron,
When 2 substances are brought together in contact there may be a physical or a chemical change depending on conditionsgive 2 examples?
When iron and sulfur are mixed together, a chemical change occurs resulting in the formation of iron sulfide. On the other hand, when water and oil are mixed together, they undergo a physical change forming separate layers due to differences in their densities.
What has the author Andrew E Godfrey written?
Andrew E. Godfrey has written: 'Chemical and physical erosion in the South Mountain anticlinorium, Maryland' -- subject(s): Erosion
Where is the mass found in chemical change?
In the energy because of Einsteins equation: E=mc^2. In a chemical change, mass is converted to energy because of the loss in strong forces and weak forces in molecules.
Is Rolling a ball of dough to make roti is reversible or irreversible change?
no it is not, it is a chemical and irreversible change,
What has the author Michael E P Hopper written?
Michael E P. Hopper has written: 'A study of the physical and chemical effects of water at high temperatures on wool keratin'
Is electrolysis of water chemical change or physical change?
It is a chemical change because you are breaking the water into its elements, hydrogen and oxygen, and it is no longer water. I NEED THE NUMBER'S ^ Here They are Oxidation of ions or neutral molecules occurs at the anode, and the reduction of ions or neutral molecules occurs at the cathode. For example, it is possible to oxidize ferrous ions to ferric ions at the anode:Fe2+ aq → Fe3+ aq + e- It is also possible to reduce ferricyanide ions to ferrocyanide ions at the cathode:Fe(CN)3- 6 + e- → Fe(CN)4- 6
