Answer:
Na + O.2 = NaO.2 whereas Cu + AgNo3 = Cu.2No.3 +AG
Answer: If you change the number of electrons in an atom it will become an ion
Explanation: When you change the number of protons in an atom, you will change the atom from one element to a different element. Sometimes, when you add a proton to an element, the element will become radioactive. If you change the number of electrons in an atom, you will get an ion of the element.
Inherited traits are traits that you are born with, they are in one's genes. Natural selection is the concept of "Survival of the Fittest" where only those who have the most beneficial of genetic traits survive to pass on their genetic code onto the next generation.
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<u>Reaction</u> :-
CaCO3 + CH3COOH → Ca(CH3COO)2 + H2O + CO2
Yes it is a chemical change as we know that chemical changes result in formation of new substances, and in this reaction calcium acetate, carbon dioxide, and water are produced.