Phases
the 4 phases of matter
What are liquid, solid, gas and plasma?
the state of matter in which atoms or molecules are completely separated from one another by empty space and can move freely
What is gas?
When the temperature is 0 degrees C and pressure is 101 kPa.
What is STP (or standard temperature and pressure)?
the physical form matter takes as determined by the arrangement and motion of its atoms or molecules
What is state of matter?
to change state from a gas to a liquid
A phase of matter with both fixed volume and fixed shape.
What is a solid?
the state of matter in which atoms or molecules are closely packed and touching one another but are not held in fixed positions
What is liquid?
The way heat flows.
Hint: from ____ to ____
What is always from WARMER to COOLER areas?
the temperature at which a substance changes from a liquid to a gas as thermal energy is added to it
What is boiling point?
the temperature at which a substance changes from a solid to a liquid as thermal energy is added to it
What is melting point?
A phase of matter with fixed volume but NOT fixed shape
What is a liquid?
the state of matter in which atoms or molecules are closely packed and touching one another in fixed positions, vibrating in place
What is solid?
To make water boil at a lower temp, you can do this.
What is lower the pressure on the water particles so they can spread out more?
to change state from a gas to a solid
What is deposit?
to change state from a liquid to a gas at the surface of the liquid
What is evaporate?
A phase of matter with neither a fixed shape or fixed volume.
What is a gas?
The energy or motion of particles is largely related to this.
What is the temperature?
Measuring an unknown liquid's mass, volume or pressure will not help determine what the liquid is because these are properties that can change. Instead, scientists could use this property to identify a substance.
What is boiling point? (or density)
Or a few other things we haven't learned =)
thermal energy transferred from a warmer object to a cooler one
What is heat?
to change state from a solid to a gas
What is sublime?
Highly energized gas where electrons are ripped away from atoms, forming a highly charged state (e.g., stars and lightning)
What is plasma?
The amount of space available for a substance is related to this.
(*also considered the amount of force exerted over a certain area)
What is pressure?
Dry ice sublimates instead of melts like regular ice because of this big difference between the two substances.
Hint: Regular ice particles have _________ than dry ice particles.
What is "Regular ice particles have STRONGER ATTRACTION for each other than dry ice particles"?
a measure of the average kinetic energy of the particles of a substance
What is temperature?
the TOTAL energy related to the motion of the atoms and molecules in an object or sample of matter
What is thermal energy?