Pennsylvania Cosmetology Practice Exam

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Prepare for the Pennsylvania Cosmetology Exam with study materials featuring flashcards and multiple choice questions. Each question comes with hints and explanations to enhance your understanding. Ace your exam with confidence!

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Which of the following are considered physical properties?

Boiling point, melting point
Reactivity, Flammability
Size, Color, Weight, Hardness
Electrical conductivity, Magnetism

The correct answer is: Size, Color, Weight, Hardness

Physical properties are characteristics of a substance that can be observed or measured without altering the chemical composition of the substance. Option C relates to characteristics that determine the appearance or state of a substance, such as its size, color, weight, and hardness. These properties do not involve chemical reactions and can be observed or measured directly. Option A and D are incorrect because boiling point, melting point, electrical conductivity, and magnetism are all examples of physical properties, but they are already specified in option C. Option B is incorrect because reactivity and flammability are chemical properties, which involve changes to the substance's chemical composition.