Particle motion and thermal heat energy should both be increasing
A change of phase: melting, evaporation, liquefaction or chemical changes as thermal dehydration, thermal decomposition, oxydation, etc.
During both freezing and melting, you have a phase change.
Alpha particle
an alpha particle
During melting, both the solid and liquid states of matter are present.
During melting the temperature remain constant if it was achieved the melting point.
A change of solid occurs during both freezing and melting.
A change in temperature occurs during both freezing and melting. Freezing and melting are physical changes since the chemical contents of the matter do not change.
The particle emitted during beta- decay is an electron, therefore it has a negative charge.
During precipitation, a water particle is released from the clouds. This particle can be in the form of a water droplet of rain, sleet, snow, freezing rain or even hail.
The substance would be in a liquid and gas state, this would be due to vaporization that is happening during boiling.
No, a delta particle is not a fast moving electron given off by a nucleus during radioactive decay. The electron described here is a beta particle, and specifically a beta minus particle. It is given off in (no surprise) beta minus decay. A link to a related question can be found below.