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scoundrel [369]
3 years ago
6

What are 3 examples of physical change?

Chemistry
1 answer:
bazaltina [42]3 years ago
3 0

Just breaking stuff so yea that’s it

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Provide a specific example the relationship between processing, structure, and properties of an engineering material. Be specifi
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An example of engineering material, <em><u>are plastics,</u></em> they are derived from organic, natural materials, such as cellulose, coal, natural gas, salt and, of course, oil. Oil is a complex mixture of thousands of compounds and must be processed before being used.

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Plastic production begins with distillation at a refinery, where crude oil is separated into groups of lighter components, called fractions. Each fraction is a mixture of hydrocarbon chains (chemical compounds formed by carbon and hydrogen) that differ in terms of the size and structure of their molecules. One of those fractions, naphtha, is the essential compound for the production of plastic.

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3 years ago
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the formation of cations by using electron dot structures are :

a) Al

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Al .    losing the three valence electrons makes the Al³⁺

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b) Sr :  

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A Lewis electron dot diagram is a representation of the valence electrons of an atom that employments specks around the image of the element. The number of dots equals the number of valence electrons within the molecule. These dots are arranged to the right and left and over and underneath the symbol, with no more than two dots on a side. Cations are the positive ions shaped by the loss of one or more electrons. The foremost commonly shaped cations of the representative elements are those that include the loss of all of the valence electrons.

To know more about the lewis electron dot diagram refer to the link brainly.com/question/14191114?referrer=searchResults.

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