Yes.
Yes.
yes
they expand
expand
because the particles
Most substances expand when heated.
When heated, most substances expand due to the increase in kinetic energy of their atoms or molecules. This leads to an increase in the average distance between the particles, causing the substance to expand.
expand
No, although it does expand with heat as do most substances.
materials usually expand when heated.
When substances are heated, typically their molecules gain energy and begin to move more rapidly. This increased movement can cause the substance to expand, change phase (from solid to liquid or gas), or even chemically react to form new substances. The specific changes depend on the substance's properties.
The coefficient of _____ expansion. It depends what kind of expansion you are talking about.