Problem: The following are properties of the metal lithium. Classify them as physical or chemical.In the liquid state it boils at 1317 °CCan be cut with a sharp knife Reacts violently with chlorine to form a white solidIn the liquid state reacts spontaneously with its glass container, producing a hole in the containerBurns in oxygen with a bright red flameLight enough to float on water Changes from silvery gray to black when placed in moist airSilvery gray in color 

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Physical property – can be observed or measured without changing the composition of matter

Chemical property – can be observed or measured when the material undergoes a chemical reaction or chemical change


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The following are properties of the metal lithium. Classify them as physical or chemical.

In the liquid state it boils at 1317 °C

Can be cut with a sharp knife 

Reacts violently with chlorine to form a white solid

In the liquid state reacts spontaneously with its glass container, producing a hole in the container

Burns in oxygen with a bright red flame

Light enough to float on water 

Changes from silvery gray to black when placed in moist air

Silvery gray in color