Measurments
What is the measure of distance
lenght
made of one type of atom or molecule
Pure substance
Has a physical blend of 2 or more parts
Mixtrue
What is an atom?
The smallest unit of an element
What is atomic mass
A weighted of the masses of isotopes of an element
What is the basic unit of length
meter
The simplest form of matter
Element
Its a physical blend of 2 or more parts
Heterogeneous mixture
What is the nucleus
The central part of an atom
What is an isotope
two or more forms of the same element that contain equal numbers of protons
What is the amount of space an object takes up
Volume
This the smallest particle that makes up and atom
Atom
Its a mixture that Is the same throughout
Homogeneous mixture
How are protons used
To give a postive charge to the atom
what is a mass number
the total number of protons and neutrons in a nucleus.