Which of the Following Is an Example of a Chemical

question 7

Multiple Choice

Which of the following is an example of a chemical change?

• A)gasoline being used in the engine of a car producing exhaust
• B)water freezing into ice crystals
• C)aftershave or perfume on your skin generating a smell
• D)a piece of metal expanding when heated,but returning to original size when cooled
• E)breaking a glass window

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Definitions:

Standard Deviation Units

Units of measurement derived from the standard deviation, used to quantify the variation or dispersion of a set of data points.

Bell-Shaped

Describes the graphical representation of a normal distribution, where most values cluster around a central peak and the distribution tapers off symmetrically towards both tails.

Standard Normal Distribution

A distribution of probability that displays symmetry around its mean, highlighting that instances near the mean happen more often than those far from it.

Mean

The mean of a number set, determined by dividing the total sum of the numbers by the count of numbers present.