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
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
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What scientific concept do you need to know in order to solve this problem?
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