Solutions and Mixtures
the ability to dissolve in another substance
solubility
when this is added to a liquid, the liquid becomes a gas
heat
Has a definite volume but not a definite shape
Liquid
How many known elements are there on the periodic table?
118
Cutting wire is an example of what kind of change?
physical
a homogeneous combination of two or more substances
solution
the point at which a liquid becomes a gas
boiling
Has a definite shape and volume.
Solid
Anything that has mass and takes up space
matter
any change that alters the form or appearance of matter but does not change the substance into something new
physical change
a liquid substance capable of dissolving other substances (water is most common)
solvent
the point at which a liquid becomes a solid
In what state do molecules move extremely quickly and by bouncing off each other
Gas
how much matter or mass there is in a given amount of space or volume.
Mass divided by Volume
density
change in matter that creates one or more new substances, with different properties than the original substance(s)
chemical change
the substance that is dissolved
solute
most substances can exist as a solid, liquid or gas depending on this
tempertature
Another name for the states of matter
Phases of Matter
A pure substance made of only one kind of atom
element
List at least two examples of physical changes for matter.
examples - boiling point, melting point, cutting, freezing point.
a mixture that does not have the same properties throughout; You can tell one part from another.
Heterogeneous
Another way to say "heat energy"
Thermal energy
An unusual state of matter found in neon signs
Plasma
A group of atoms held together by chemical bonds
molecules
List at least 2 examples of chemical changes for matter.
Examples: flammable, toxic, rotting, rusting, etc.