Chapter 2 - Matter Flashcards
What is the position, mass and charge of a proton?
Nucleus
1
+(+1)
What is the position, mass and charge of a neutron?
Nucleus
1
N (0)
What is the position, mass and charge of an electron?
Shells
1/2000
- (-1)
Atomic number
Number of protons, and the same as the number of electrons
Mass number
Number of protons plus number of neutrons (number in the nucleus)
Element
A substance made up from only one type of atom - cannot be broken down further
Theory
An idea supported by scientific evidence
Mixture
Two or more elements or compounds that are in the same place but not chemically joined together
Atom
Smallest part of an element that can exist on its own
Polymer
A substance made up of long, repeating chains of molecules with unique properties
Monomer
A monomer is a type of molecule that can be reacted together with other monomer molecules to form a polymer chain