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.

lunar landing mission. apollo 11 was the first manned mission to land on the moon. the first steps by humans on another planetary body were taken by neil armstrong and buzz aldrin on july 20, 1969. the astronauts also returned to earth the first samples from another planetary body.

explanation: