Thermal Energy Flashcards
All 5 cards in this deck
What two things can happen when a system is heated?
Its temperature rises, or it changes state.
What happens to the energy stored in a system when it is heated?
The energy in its thermal (internal) energy store increases, so the particles move faster or are pulled further apart.
What is the energy supplied to a substance used for during a change of state?
Breaking the forces of attraction between particles (separating them), not raising the temperature.
True or false? While a substance is changing state, its temperature stays constant even though energy is still being supplied.
True. The energy separates the particles instead of raising the temperature.
What happens to energy and temperature when steam condenses to water at °C?
Energy is transferred from the substance to the surroundings while the temperature stays constant.