Question

Temperature

Energy Input
The three states of matter are modeled in the heatind cu
curve seen here. Identify ALL of the changes that must take place for a
substance to change state, from a solid to a gas.
A)
Pressure increases
B)
Temperature increases
19
7
Particles spread apart
D)
Kinetic energy increases
E)
Particle motion increases

Answer 1

To transition a substance from solid to gas, the temperature and kinetic energy must increase, allowing the particles to move from tightly packed in a solid to freely moving in a gas through processes like melting and vaporization.

Step-by-step explanation:

To change a substance from a solid to a gas, we must apply energy to overcome intermolecular forces and increase the particles' kinetic energy. When heat is added to the solid, temperature increases, causing particles to vibrate more vigorously until the solid reaches its melting point and transitions into a liquid (melting).

As additional heat is introduced, the temperature rises further, leading to an increase in kinetic energy and particle motion. Eventually, the substance reaches boiling point, and particles acquire enough energy to spread apart, becoming a gas (vaporization). This process is affected by pressure, but for a substance to transition from solid to gas at constant pressure, primarily temperature and kinetic energy are key drivers of the state change.