Question

How are chemical changes different from physical changes?(1 point)
Responses

They are reversible.
They are reversible.

They involve heat.
They involve heat.

They form new substances.
They form new substances.

They include shifts in the phase of matter.

Answer 1

Chemical changes differ from physical changes primarily because **they form new substances**. In a chemical change, the composition of the substance changes, resulting in the creation of one or more new substances, whereas a physical change does not alter the chemical composition and often involves changes in state or phase.