State Shifter
Convert states using heat and kinetic energy
What this lesson covers
Why it matters
Imagine ice cubes vibrating so violently they shatter their rigid formation and flow like water. Heat is not just warmth; it is kinetic energy breaking invisible bonds.
Predict first
What happens to the particles when ice melts into water?
Melting is a physical change where added heat increases kinetic energy, allowing particles to overcome fixed positions and flow.
- Particles get larger and spread out
- Particles gain kinetic energy and slide past each other — correct
- Particles break into smaller atoms
- Particles stop moving completely
What you do
Drag the temperature slider. Watch how particle speed and spacing change as ice becomes water, then steam.
Check yourself
Why does steam cause more severe burns than boiling water at the same temperature?
Steam holds extra energy (latent heat) absorbed during boiling. When it condenses on skin, this energy releases as heat.
In which state are intermolecular forces strongest?
In solids, particles are packed tightly with strong forces holding them in fixed positions, requiring the most energy to break.
What happens to the temperature of water during boiling?
During phase change, added heat breaks intermolecular bonds rather than increasing kinetic energy, so temperature remains steady.
- Steam is hotter than 100°C
- Steam contains latent heat of vaporization — correct
- Steam particles are heavier
- Water particles move faster than steam particles
- Gas
- Liquid
- Solid — correct
- Plasma
- It rises continuously
- It stays constant at 100°C — correct
- It drops as steam escapes
- It fluctuates randomly