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It all depends on the substance and its physical properties. For example, salt water can be separated by boiling the water and letting the salt remain.
You can evaporate the water from the sugar.
You can evaporate the water from the sugar.
A mixture cannot be separated with chemical change because a mixture is two or more substances which will retain their physical properties when combined. Mixtures are separated by physical means like filters, sifting, chromatography, centrifuge, electrophoresis and magnetic attraction depending on what the mixture is composed of.
It is possible to filter mud out of water.
density and boiling point
I believe you are talking about a mixture. A mixture is a physical blend of two or more substances where each substance retains its own properties. Since they keep their properties, mixtures can be separated into their original individual substances. Example: If you had a mixture of salt and sand, you could separate them by pouring the mixture into a container of water. Salt is soluble in water and will dissolve. You can then pour the salt water through a filter, capturing the sand. Then, by evaporating the water, the salt will be left.
Water is a compound because it is made from Oxygen and Hydrogen chemically bonded together to form a water molecule (H2O). With water you can not separate the Oxygen from the Hydrogen by physical means.A soft drink is a mixture because it is made from:WaterSugarFlavoringsColoringsIt is possible to separate these things out of the mixture using physical means.
That would probably depend on how you separate them. For example, if you want to use reverse osmosis, then the salt molecules don't go through the filter as easily as the water molecules - either because they are bigger or because of their electric charge.
the physical properties are gold and ice cream due to the salt being covered by the gold and the ice cream being in my belly.
a mixture is a physical reaction because, by definition, a mixture is the combination of 2 or more substances and they maintain their chemical properties. For example putting food dye in water is a mixture because although it looks like a color change (clear to colored) it is merely the dye molecules diffusing throughout the water while maintaining their chemical properties.
These physical properties depends on the water temperature.