Classify these properties of the metal lithium as physical or chemical. Physical Chemical light enough to float on water silvery

The physical characteristics of lithium do not alter its material structure.

In contrast, its chemical properties can lead to new substances forming from lithium.

light enough to float on water - physical property

silvery gray in appearance - physical property

turns from silvery gray to black when exposed to moist air - chemical property

(when in contact with air, lithium reacts with oxygen creating an oxide that appears black)

can be sliced with a sharp knife - physical property

boils at 1317 °C in liquid form - physical property

reacts aggressively with chlorine yielding a white solid - chemical property

in its liquid state, it interacts with its glass container, causing damage to it - chemical property

burns brightly in oxygen producing a red flame - chemical property

Explanation:

Physical properties are those that do not affect the chemical composition of a substance.

Examples include attributes such as shape, size, mass, volume, density, and hardness.

In contrast, chemical properties result in changes to the chemical structure of a substance.

For instance, precipitation, reactivity, and toxicity are considered chemical properties.

Thus, the properties listed for lithium can be categorized as follows.

• Light enough to float on water - Physical

• silvery gray in appearance - Physical

• changes from silvery gray to black in damp air - Chemical

• can be sliced easily with a knife - Physical

• it boils at in liquid form - Physical

• reacts violently with chlorine to produce a white solid - Chemical

• reacts spontaneously with its glass container, causing a hole - Chemical

• burns in oxygen creating a bright red flame - Chemical