last physics test Flashcards
solid
cannot be squished, rigid, fixed shape
liquid
can not be squished, not rigid, not fixed shape
gas
can be squished, not rigid, not fixed shape
substance definition
A substance is anything that contains matter
Mixture
Any group of substances that are combined without a chemical reaction occuring
Pure substance
A single substance, either an element or a substance that has been formed by a chemical reaction (a compound)
Elements
an element is a type of atom, classified according to the number of protons it has (known as the atomic number). The elements are arranged on the periodic table according to the atomic number it has. . An element can be a single atom or a group of atoms that are all the same type.
how many elements do we know of
118
Aluminum
Al
Calcium
Ca
Carbon
C
Chlorine
Cl
Copper
Cu
Gold
Au
Helium
He
Hydrogen
H
Iron
Fe
Lead
Pb
Magnesium
Mg
Mercury
Hg
Neon
Ne
Nickle
Ni
Nitrogen
N
Oxygen
O
Pottasium
K
Silicon
Si
Silver
Ag
Sodium
Na
Sulfur
S
Tin
Sn
Uranium
U
Zinc
Z
Heterogenious mixture
When you can visually tell that there is more than one substance in a micture
Homogenious
When you can’t visually tell that there’s more than one substance in a mixture
Solutions
One substance (the solute) dissolves in another (the solvent)
suspensions
A heterogenious mixture where two phases are involved. It can look like a sol
Colloids
A
