PSLE Science – General Practice Test

Question: 1 / 400

Which of the following is a physical change that can occur in a substance?

Burning

Melting

Melting is indeed a physical change that occurs in a substance. During the melting process, a solid transitions to a liquid when it is heated. This change occurs because the particles within the solid gain energy and are able to move more freely, resulting in a change of state without a change in the chemical composition of the substance.

In contrast, burning, rusting, and digestion involve chemical changes. Burning leads to the formation of new substances as materials combust, rusting involves the reaction of metal with oxygen to form rust (iron oxide), and digestion breaks down food into simpler chemical compounds that the body can use. Each of these processes alters the identity and structure of the original material, making them chemical rather than physical changes.

Get further explanation with Examzify DeepDiveBeta

Rusting

Digestion

Next Question

Report this question

Download PSLE Science – General Practice Test PDF Study Guide
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy