Changing States Of Matter Flashcards
What can be added or removed to change water from one state to another?
Energy
Adding heat to a solid or liquid causes its particles to move about __________ and ____________
More and faster
If enough heat is added to a solid or liquid what happens to the particles?
The particles break free from each other and the substance changes state
If enough heat is added to a solid or liquid what happens to the particles?
The particles break free from each other and the substance changes state
What are the 3 state changes that can occur when enough heat energy is added to a substance?
Melting, evaporation or sublimation
What is melting?
The process in which heat causes a solid to change into a liquid
When the physical properties of a substance has changed (eg. Change of state) is the substance itself exactly the same?
Yes!
Sold water (ice) and hand water is still water.
What is sublimation?
When a substance changes state from a solid to a gas.
What is sublimation?
When a substance changes state from a solid to a gas.
What is the definition of melting point?
The temperature at which a solid melts.
What is the definition of melting point?
The temperature at which a solid melts.
Choose the correct states.
A substance is ______________ below its melting point and is______________ (a melted liquid) above it.
Solid
Molten
A substance is ______________ below its melting point and is______________ la melted liquid) above it.
Solid
Molten
What is the melting point temperature of water?
0°C
