Question

when copper is heated what happens to the particles as it expands

Answer 1

Answer:

When a metal is heated the kinetic energy in the particles increases and hence the force pf attraction decreases among the particle (as electrons try to escape due to kinetic energy). This causes the metal to expand.

Answer 2

Answer:

when a metal is heated the kinetic energy in the particles increases and hence the force pf attraction decrease among the particle.this cause the metal to expand.