Chemistry Flashcards
Chemistry
The study of matter and all the changes it undergoes
Matter
Anything that has mass and takes up space which can be a solid liquid or gas
Element
A pure substance that cannot be broken into simpler substances by ordinary chemical means
Chemical symbol
Abbreviation of the name of an element
Atom
Smallest particles of an element
Molecule
Two or more atoms joined together by chemical bonds
Model
A representation of something else
Metals
High luster, malleable, ductile, good conductors
Non-metals
Dull, poor conductors
Atomic number
This number represents how many protons it has
Proton
Positive charge, inside the nucleus, heavy in mass
Neutron
No charge / neutral, inside the nucleus, same mass as proton
Electron
Negative charge, outside the nucleus, very light