Atoms
what is the first model of an atom
what is .
What is Seconds (s)
Phase of matter that, Fills its container completely
gas
shows which elements and how many atoms of each make up a compound
defines homogenes
can't see individual parts like, salt water, and sweet tea
define Mass number
Weighted average mass of all isotopes of a element
The SI unit for the amount of substance, Discovered by Avogadro
Mole (mol)
Phase of matter that, changes shape depending on its container
Liquid
Define substance
matter that has the same composition and properties throughout
define periodic
atomic numbers as well as atomic symbols
define Atomic number
the number of protons in the nucleus of an atom
The SI unit of Length
What is Meter (m)
Phase of matter that, has a definite volume and shape
Solid
define compound
substances who's smallest unit is atoms of more than one element bonded together
define groups/families on the periodic table
groups of elements with similar properties and behaviors
Define Isotopes
atoms of the same element that have different numbers of neutrons
The SI unit of Mass
Kilogram (Kg)
define Physical Property
a Characteristic we can measure without changing the substance at all
define mixture
mix 2 or more substances without a chemical change
define density
relates objects mass to its volume, (d=m/v)
The currently used atom model
Electron cloud model
the SI unit of temperature
Kelvin (c)
define chemical properties
characterize the ability of a substance to change into another substance
define heterogenes
you can see the individual parts like a salad, or pizza
define surface tention
the tension of the surface film of a liquid by the attraction of particles