Vocabulary #1 matter
Matter
Matter is everything that has mass and takes up space.
The substance a physical object is made up of.
Made up of small particles called ATOMS. Matter and Atoms have
mass and take up space. (MEA)
Physical
property of
matter
Characteristics that are observable and measurable EX. Six shape
temp, color, texture.
The things that can be measured without changing the chemical
property
Element
Pure. Can’t be broken down. Make up ALL the things on Earth.
All Atoms of the same Elements have the same property.
EX. All matter made of iron has the same property. (MEA)
Atom
Smallest part of an element. All elements are made of atoms.
Matter is made of elements. Elements are made of atoms. (MEA).
Particles
Small piece or part
Thermal energy
Heat energy
Change in phase
Changing a material or mixture from one state of matter to
another.
Matter changes from one state to another.
Atoms move faster and spread out more when heated
Phase
Stages:
4 forms: Solid, liquid, gas, plasma (In which matter
can exist)
Boiling Point
Temperature water boils
Melting Point
Temperature at which solids melt
Pure Substances
Matter that CAN NOT be SEPARATED into any other
matter by physical process.
Solubility
The amount of solute that can dissolve in a solvent.
The TEMPERATURE of the solvent determines the
solubility of that substance/item.
The ability of one substance to dissolve into
another substance
Solute
Solid part of a solution
Solvent
Liquid part of a solution.
WATER is the most common solvent
Density
The amount of Matter in a given volume.
The more MATTER you put in a defined space
(volume), the more DENSER it gets.
Mass
The more STUFF (matter) you put in a SPACE
(volume), the more the MASS will increase, so the
more the DENSITY.
Physical change
Volume
A change takes place, but NOT in the molecular
composition of the substance. (not a chemical
change). The change may be: tearing one piece of
paper into two pieces.
The amount of SPACE something takes up
Molecules movement when heated:
Heated/solid
Molecules shake in a tight space./not moving
apart-they just VIBRATE
Heated/liquid
Molecules move a little from each other
Heated/gas
Molecules move very fast and far away from each
other.
The hotter ----the more the energy—the more the
movement---the more the EXPANSION.
SOLIDS/ atoms are not compressible
Very small movements. Definite volume and shape.
Atoms are packed together. Atoms vibrate because
of thermal energy.
Solid to a liquid
You must add heat. Definite volume but can change
shape. The particles touch BUT the particles can
move around.
They take the shape of the container because the
liquid molecules can move.
Liquid to gas
When heat is added it has no definite shape or
volume.
Gasses can keep on spreading and spreading out
indefinitely.
NOTE: Density, melting point, boiling point, and
solubility
DO NOT CHANGE based on the amount of matter
present.
EX: Ice will always melt at 32 degrees F. Weather
there is a lot of ice or a little bit of ice.
NOTE: Volume, Mass, and Weight
CHANGES based on how much stuff (MATTER) you
have present.