Vocabulary
a group of atoms joined together in a particular way
molecule
This happens to molecules movement when you transfer energy in
What is move faster
Burning/Combustion will lead to this.
What is a new/different substance?
You have two substances, one with a strong and one with a weak attraction, and both are liquids right now. You need to add less energy to this substance to change to a gas.
The one with the weak attraction
If you keep adding an energy to a gas it will became this phase
What is plasma?
the energy that an object has because it is moving
Kinetic energy
A scientist has a container with a substance inside. At first, the molecules in the substance move away from each other. Later, the molecules move around each other.
What is gas to liquid (Condensation)
Dry Ice does this phase change as it turns from solid to gas.
What is sublimation?
the temperature at which a substance changes from the solid phase to the liquid phase
melting point
This state of matter moves in place
What is a solid?
the way molecules in a substance move around relative to each other
freedom of movement
This happens to molecules kinetic energy when they move slower
What is decreases?
These two phase changes lose energy
What is Condensation and Freezing?
Water has a _____ molecular attraction than alcohol
What is stronger?
This happens to the temperature during a phase change
What is stays constant/doesn't change?
What is temperature?
Mario is making chocolate. At the beginning of the chocolate-making process, the molecules were moving around each other. After the chocolate cooled the molecules moved in place .
What is Liquid to solid (Freezing)?
These two phase changes gain energy
What is Melting and Evaporation?
This stays the same for each substance no matter how much energy is added or taken away
What is attraction?
This is why water boils at a lower temperature at high elevations or on Mars.
What is lower pressure?
a pull between two molecules that is always the same for a substance
molecular attraction
Scientists put a sample of water into a sealed tank. Water can be a solid, liquid, or gas. At first, the molecules moving around each other. Then, the scientists transferred energy into the substance, and the molecules moved apart.
What is liquid to gas (Evaporating)?
These two phases have no fixed shape and will take the shape of their containers?
What is Gas and Liquid?
If enough energy is added to break the attraction of a substance, this will happen.
What is a phase change?
What is increases?