What Must Occur in a Physical Change

question 73

Multiple Choice

What must occur in a physical change?

• A)A new substance must be formed.
• B)The chemical identity of a material must change.
• C)A material must decompose or be formed.
• D)The state of matter must be altered.

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Definitions:

Confidence Interval

A range of values, derived from sample statistics, that is believed, with a certain probability, to contain the true value of a population parameter.

Population Mean

The average value of a set of characteristics for an entire population.

Confidence Interval

is a range of values, derived from sample data, that is likely to contain the value of an unknown population parameter, with a certain level of confidence.

Mean Temperature

The average value of temperature measured over a specific period of time or across different locations.