To help, I drew a diagram. This represents an ionic bond between Na and Cl. Na is giving his single electron to Cl, which is indicated by the arrow, to make Cl full with 8 electrons.
Answer:
The exposed metal rusts is an example of a chemical change because rust is an example of a chemical change in objects for example bicycles, scooters, etc.
D. M represents electrical energy, K represents mechanical energy
Explanation:
A blender transforms electrical energy to mechanical energy. Where M is the electrical energy and K is the mechanical energy.
- A blender is laboratory device used to mix and puree food substances especially fruits.
- It is powered by electricity which causes the blades to turn and rotate very fast.
- therefore, it transforms electrical energy into mechanical energy.
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Answer:
The answer is, in fact, Calcium Nitrate. I even looked it up to make sure, and according to PubChem, it is Calcium Nitrate. I suggest asking your teacher what this question is trying to ask because if it says it is not Calcium Nitrate, someone got it wrong.
Explanation:
The only other name I can think of, though, is Calcium Dinitrite.
The answer is- The order of decreasing potential energy is :
The potential energy can be expressed as the static energy that is stored in the chemical bonds.
What is the trend of potential energy in an exothermic reaction and an endothermic reaction?
- During an exothermic reaction, heat is released and the stored potential energy of bonds is converted into the kinetic energy and thus there is a decrease in the potential energy during an exothermic reaction.
- During an endothermic reaction, heat is absorbed during the reaction and this heat is stored as potential energy in bond, hence the potential energy increases during a endothermic reaction.
- Now, during this reaction, basic Magnesium hydroxide, reacts with acidic , thus this reaction is an exothermic reaction.
- Hence, the potential energy of products is less than the potential of reactants.
- Next, the potential energy of solids are always more than the potential energy of gases.
- Therefore, the decreasing order of potential energy is
[H2O is not considered]
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