Concept explainers
(a)
Interpretation:
The given property of sodium has to be labelled as a physical property or chemical property.
“Sodium is a soft metal (can be cut with a knife)”.
Concept Introduction:
Physical properties:
The properties which are measured or observed without change in composition of matter are said to be physical properties. These includes appearance, texture, color, odor, melting point, boiling point, density, solubility, polarity and so on.
Chemical properties:
The properties that are observed when a substance undergoes any
(b)
Interpretation:
The given property of sodium has to be labelled as a physical property or chemical property.
“Sodium reacts violently with water to produce hydrogen gas and sodium hydroxide”.
Concept Introduction:
Refer to part (a).
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