The part of an atom with no charge
Neutron
A part of an atom with a negative charge
Electron
The atomic number tells you
The number of protons (and electrons) an atom of an element has.
The part of an atom with a positive charge
Proton
The location of protons and neutrons.
Inside the nucleus
Atomic mass tells you.
Protons + Neutrons
Tiny particles that make up all matter.
Atoms
The location of electrons.
Outside the nucleus
Columns on a periodic table are called
Groups
What are the three types of elements.
Metals, metalloids, and nonmetals
Rows on the periodic table
Periods
Boiling water is an example of what type of change.
Physical
A molecule with only 1 type of atom.
An element
A molecule with more than 1 type of atom.
Compound
The majority of the elements on the periodic table are this.
Metals
A __________ contains two or more substances that are not chemically combined.
Mixture
Found in a zigzag line on the periodic table.
Metalloids
Located on the right side of the zigzag line.
Non-metals
Iron oxide Fe2O3 is an example of what type of molecule?
Compound
Arsenic (As) has 33.
Protons and electrons