A
anything that takes up space and has mass
matter
NaCl2
How many Chlorine atoms are in this chemical formula?
2
Substances that are made of only 1 kind of atom
element
What do we call 2 or more atoms joining together to form a new particle?
molecule
Elements grouped in rows and columns according to their kind:
Periodic Table of Elements
the smallest particle of a substance
atom
What tells you the unique number of protons and atom has?
atomic number
We are all made in the image of ______.
God
the approximate mass of an atom
atomic mass
Arrange from biggest to smallest:
atom, electron, nucleus, proton
atom
nucleus
proton
electron
These have a positive charge and are the heaviest part of an atom
proton
A shorthand method that lists the types of atoms in a molecule
chemical formula
These have a negative charge and move quickly around the nucleus
electron
These are located inside of the nucleus and have no charge
neutron
This is the shortened form of a chemicals name.
Example Hydrogen is H
chemical symbol
This is the study or Right vs. Wrong
Ethics
What year was the latest version of the atomic model made?
1913
Hydrogen is H, Carbon is C ....
Why is Gold Au?
Why is Lead Pb?
Their symbols come from Latin
This is where you can find the electrons
shell
Substances with 2 or more elements make a ________
compound