10 points
true or false: a characteristic of a substance that can be observed or measured
without changing the identity of the substance is a physical property.
true
or
false

The given statement is true.

Explanation:

A property that does not bring any change in chemical composition of a substance are known as physical properties.

For example, shape, size, mass, volume, density, etc of a substance are all physical properties.

As melting of ice only changes its state and not its identity.

And, a property that changes chemical composition of a substance is known as chemical property.

For example, precipitation, reactivity, toxicity etc are chemical property.

Therefore, we can conclude that the statement a characteristic of a substance that can be observed or measured  without changing the identity of the substance is a physical property, is true.

which

what is a measurement of the earth’s history divided into time periods?

> fossil record <

sedimentary rock

> geologic time scale <

radioactive elements