Question

Which statement describes a chemical property of matter?

Answer 1

Answer: D. Sodium is a very reactive element that combines easily with nonmetals

Explanation:

Chemical property is defined as the property of a substance which is observed during a reaction where the chemical composition identity of the substance gets changed.

Physical property is defined as the property which can be measured and whose value describes the state of physical system. For Example: State, density etc.

A. The density of ice is 0.4 g/ml is a physical property.

B. The boiling point of ethanol is $78.4^0C$ is a physical property.

C. Rust is a flaky material with an orange-red color is a physical property.

D. Sodium is a very reactive element that combines easily with nonmetals is a chemical property.

$4Na+O_2\rightarrow 2Na_2O$

Thus the statement that describes a chemical property of matter is  Sodium is a very reactive element that combines easily with nonmetals.

Answer 2

C because rust is a chemical property do you