Solids, Liquids, Gases
H2O in solid form
The Unit of measurements for liquids
liter (L) or milliliter (mL)
Movement of thermal energy from a warmer object to a cooler object.
Heat
The transfer of thermal energy by touching
Conduction
Solid to gas
Sublimation
What can cause the molecules freedom of movement to change?
Freezing, condensing, evaporating, melting
True or false: gases have mass
True
Liquids have a _______ ________, but __ ________ ________ .
definite volume, no definite shape
All matter is made of tiny particles called ________ or ___________.
atoms, molecules
What is the freedom of movement?
the way molecules in a substance move around relative to each other
The way molecules move around each other
Describe the difference in Macro-scale and Micro-scale
Macro scale is what you can see with the naked eye.
Micro scale you would need to use a microscope or a magnifying glass.
If enough is added, the motion of the particles...
begins to overcome the attraction and the particles move more freely.
In a solid the particles are _______ ______, and vibrate in a ______ ________.
tightly packed, fixed position
Particles vibrate or move around less if the matter is ______.
Cooled
Matter is
anything that takes up space and has mass
The transfer of thermal energy by heating and cooling a fluid: _______.
Name two examples of that heat transfer ________.
Convection, Boiling water, hot balloon...
Water turn to gas when energy is______ and the process is called______
The temperature at which a substance begins to melt is called
melting point
Solids have a _______ _______ and a _______ _______.
definite shape, definite volume.
Why does a solid keep its shape?
because its molecules only move in place, not around each other.
The average kinetic energy of the particles that make up a material.
Temperature
Adding or removing _______ ______ causes a change in state of matter.
thermal energy
Water turns to solid ice when energy is...
Energy is removed
The freezing of water is very unusual because...
water molecules move farther apart as they arrange themselves into the structure of ice as water freeze.
In solid, particles do not move fast enough to overcome the strong ______ between them.
Attraction
The particles of a gas are very ___ _____ and move ______ except when they collide.
far apart, freely
Thermal energy is ____________ of all the particles that make up an object.
Total energy
In order to remove energy and slow particles down, you can do this.
Decrease temperature
When a liquid is boiling, does the temperature increase, decrease, or stay the same?
Stays the same.
What could have happened to Titan lake?
It evaporated
It froze
It could have turned into a gas
It could have melted