Q:

Is sand a compound or a mixture?

A:

Quick Answer

Sand is a mixture, not a compound. Sand is classified as a heterogeneous mixture because it does not have the same properties, composition and appearance throughout the mixture. A homogeneous mixture has a uniform mix throughout.

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Full Answer

Sand is found over much of Earth's surface, blanketing beaches, riverbeds and deserts. It is made up of small particles of rock, minerals and other materials. The composition of sand varies depending on its location. Silicon dioxide in the form of quartz is the most common component of sand. It is found in an array of colors, including pink, green, black, tan and white.

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    How do you separate a mixture of sand and sugar?

    A:

    To separate sugar from its mixture with sand, a proportionally large amount of water is added to the mixture and shaken vigorously to allow the sugar to dissolve. The solid-liquid mixture is filtered using a porous material to retain the sand on the filter and to allow the liquid portion to pass through. The liquid contains the sugar originally present in the solid mixture.

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    What is racemic mixture?

    A:

    A racemic mixture is a mixture with equal amounts of two different stereoisomers of a chemical compound. These stereoisomers are mirror images of one another that cannot be superimposed onto one another. These types of stereoisomers are also called enantiomers.

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  • Q:

    What are five common mixtures?

    A:

    Some examples of mixtures include metal alloys containing two or more metals, salt dissolved in water, air containing various gases, sand mixed with tiny rocks and pebbles, and trail mix with different types of nuts and raisins. When two or more substances mix and retain their chemical properties through the process, they form a mixture. The individual components in a mixture can be separated.

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