SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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freezing point
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reactivity
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density
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boiling point
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Detailed explanation-1: -Reactivity with oxygen depends on the chemical nature of object, thus, it is not a physical property. It is a chemical property.
Detailed explanation-2: -Reactivity is the ability of matter to combine chemically with other substances. Some kinds of matter are extremely reactive; others are extremely unreactive. For example, potassium is very reactive, even with water.
Detailed explanation-3: -Thus, Flammability is not a physical property. It is a chemical change or the one that can be observed when a substance changes into something else. Therefore, the correct answer is option (E).
Detailed explanation-4: -Familiar examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity.
Detailed explanation-5: -The decay of matter is not a physical change.