Will the change of temperature affect the mass or volume of matter and the Examples?

Answer 1

The mass of an entity will remain constant, independent of temperature. It is always the volume that changes. Take water for example:

When you have measure 1kg of liquid water in a closed container of dimensions 1m x 1m x 1m (it is closed so no water will evaporate), its mass will remain 1kg whether the room is 7°C or 45°C. As the volume of the container is 1m3, the density of the measured water is 1kg.m-3.

[Density is mass / volume]

Now assume the water is frozen (below 0°C), its volume will increase due to its expansion. As the density of ice is less that of water, the ice will float (hence why we get icebergs in the sea). The mass however will remain the same as nothing has been added or taken away.

N.B - water is at its most dense at 4°C.

Answer 2

A change in temperature can affect the volume of matter through thermal expansion or contraction. For example, when a solid is heated, its particles gain energy and vibrate more, causing the solid to expand. However, the change in temperature does not affect the mass of matter, as mass is a measure of the amount of substance present and remains constant unless there is a change in the number of particles.