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YES
- So the response to the first question, “Does it have fixed composition?” will be YES, since we know the chemical formula of salt. We know what it is made out of. The response to the next question, “Does it contain more than 1 type of atom?” is YES. This is because NaCl consists of two types of atom, Na and Cl. So, that means salt is a COMPOUND.
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Key Chemical Properties. Melting and Boiling Points: Sodium chloride has a high melting point (about 801°C) and boiling point (about 1413°C), typical of ionic compounds. Solubility: NaCl is highly soluble in water due to the polarity of water molecules, which can separate the sodium and chloride ions.
In salt solution, salt is the solute and water is the solvent. The particles of solute and solvent are completely and evenly mixed. Solutions are clear – you can see through them.
In chemistry, a salt or ionic compound is a chemical compound consisting of an assembly of positively charged ions (cations) and negatively charged ions (anions), [1] which results in a compound with no net electric charge (electrically neutral). The constituent ions are held together by electrostatic forces termed ionic bonds.
Mar 10, 2016 · 6.4: Does a Compound Have a Fixed Composition? is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by LibreTexts. Back to top 6.3: Compounds, Combustion, and the Conservation of Mass
Salt easily dissolves in water, but salt water cannot be classified as a substance because its composition can vary. You may dissolve a small amount of salt or a large amount into a given amount of water.
In common usage, salt is a mineral composed primarily of sodium chloride (NaCl). When used in food, especially in granulated form, it is more formally called table salt. In the form of a natural crystalline mineral, salt is also known as rock salt or halite.
Salt easily dissolves in water, but salt water cannot be classified as a pure substance because its composition can vary. You may dissolve a small amount of salt or a large amount into a given amount of water.
