Molecules move faster when heat energy is added to to water. The water temperature may
increase or some or the molecules may get enough energy to change phase from solid to liquid
or from liquid to vapor.
The amplitude of a wave increases as more energy is added to it. This means that the displacement of the particles or the height of the wave increases, resulting in a larger motion.
Particle motion increases as energy (like heat) is added. The motion slows as energy leaves. Temperature is a measure of this change in particle motion.
The particle speed increases.The energy increases; the speed increases.
When thermal energy is added, particles absorb the energy and their motion increases, leading to higher temperatures. Conversely, when thermal energy is removed, particles lose energy and their motion decreases, causing a decrease in temperature. This relationship between thermal energy and particle motion is described by the kinetic theory of matter.
they spread apart and move faster when energy is added.
When electrical energy is added to water it creates electric shock.
The temperature remains constant during a change of state as the energy is used to break intermolecular bonds rather than increase molecular motion. Once the substance has completely changed state, the temperature will start to rise again as the added energy increases the molecular motion.
I added "external" to the question
it heats up
When energy is added to matter, its particles may vibrate or move faster depending on the type of energy added. This increase in motion can lead to a rise in temperature, change in phase, or chemical reactions. Overall, adding energy can alter the physical or chemical properties of the matter.
When energy is added during a phase change the energy is used to break molecular bonds.
When heat energy is added to a substance, its particles gain more kinetic energy and move more vigorously. This increased motion can cause the particles to spread out, which leads to an increase in volume and a decrease in density of the substance.