Question

What phase change is the following substance undergoing?

First, the particles of this substance are closely packed and
are not easily compressed. After the change, the substance
can flow easily but cannot be easily compressed.
a freezing
b melting
Cevaporation
d deposition
e sublimation

Answer 1

b melting

Step-by-step explanation:

The phase change the substance is undergoing is from solid to liquid and this is called melting.

• To understand this process, we need to know the the substance changing.
• A substance that contains particles that are not easily compressed and packed is a solid.
• Solids have fixed shapes and volumes.
• Liquids can easily flow although they cannot also be easily compressed.

The phase change from solid to liquid is facilitated by a melting process.