Chemistry, asked by priya1985, 1 year ago

suggest few physical changes and chemical changes using water sugar and sodium metal ​

Answers

Answered by Harsh1982
2

Answer:

When you dissolve salt in water the sodium chloride dissociates in Na+ ions and Cl- ions, which may be written as a chemical equation:

NaCl(s) → Na+(aq) + Cl-(aq)

Therefore, dissolving salt in water is an example of a chemical change.

Sodium is an alkali metal, being in group 1 of the periodic table, because it has a single electron in its outer shell, which it readily donates, creating a positively charged ion—the Na+ cation. Its only stable isotope is 23Na. The free metal does not occur in nature, and must be prepared from compounds. Sodium is the sixth most abundant element in the Earth's crust and exists in numerous minerals such as feldspars, sodalite, and rock salt (NaCl). Many salts of sodium are highly water-soluble: sodium ions have been leached by the action of water from the Earth's minerals over eons, and thus sodium and chlorine are the most common dissolved elements by weight in the oceans.

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