Evaporate the water from the salt water to leave the salt. Get fresh water once it is dry and add it to the salt. The salt dissolves again. A compound cannot be separated by simple means (e.g. Evaporating). A mixture can be.
Pizza is an example. There are also other things like cake, but it has to show more than one part in there for it to be a homogeneous mixture.
A particle diagram representing a mixture of an element and a compound would show individual atoms or molecules of the element and compound mixed together without forming any new chemical bonds. The particles of the element and compound would be distinct from each other within the mixture.
A compound consists of two or more elements that have physically reacted and bonded together, either ionically ar covalently. An example of this is water - H2O. A mixture, on the other hand, is two or more substance that have been brought together, but have not chemically bonded with each other.
Technically, yes. A heterogeneous mixture is a combination of two or more compounds that can be easily identified as more than one substance. An example would be oil and water, they can be put in the same container and mixed up but will be obvious that they are not one substance. A homogeneous mixture is a combination of two or more compounds that appears as one substance and can be sometimes confused as just a compound. This is apparent when something is dissolved in different liquid like pouring salt in water and the salt doesn't show up until the water evaporates.
To show that salt is still present in water after dissolving, you can evaporate the water and observe the salt residue left behind. Start by weighing the original amount of salt, dissolve it in water, then heat the solution until all the water evaporates. Finally, measure the remaining salt residue to confirm that the salt did not disappear during the dissolving process.
Yes. A heterogeneous mixture is one that lacks uniformity. When salt water (a homogeneous mixture) and sand are placed in the same container, the sand sinks to the bottom and the salt solution remains, largely, above the sand, demonstrating the characteristic lack of uniformity. See related link, below.
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Pizza is an example. There are also other things like cake, but it has to show more than one part in there for it to be a homogeneous mixture.
A particle diagram representing a mixture of an element and a compound would show individual atoms or molecules of the element and compound mixed together without forming any new chemical bonds. The particles of the element and compound would be distinct from each other within the mixture.
Salt solutions are used in osmosis experiment to show that water will move to the side that has more salt. "Water follows salt."
Sea water is not a pure substance because it is a mixture of various compounds such as salt, minerals, and organic matter dissolved in water. Testing the conductivity of sea water can also reveal that it contains different ions, indicating its impure nature.
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A compound consists of two or more elements that have physically reacted and bonded together, either ionically ar covalently. An example of this is water - H2O. A mixture, on the other hand, is two or more substance that have been brought together, but have not chemically bonded with each other.
A solution is a compound, or a mixture and will probably show a slight discoloration or blur.
To show that salt is still present in water after dissolving, you can evaporate the water and observe the salt residue left behind. Start by weighing the original amount of salt, dissolve it in water, then heat the solution until all the water evaporates. Finally, measure the remaining salt residue to confirm that the salt did not disappear during the dissolving process.
Technically, yes. A heterogeneous mixture is a combination of two or more compounds that can be easily identified as more than one substance. An example would be oil and water, they can be put in the same container and mixed up but will be obvious that they are not one substance. A homogeneous mixture is a combination of two or more compounds that appears as one substance and can be sometimes confused as just a compound. This is apparent when something is dissolved in different liquid like pouring salt in water and the salt doesn't show up until the water evaporates.
Because liquids are different substances or mixture of substances; each chemical compound (substance) has a specific density.