Defining atoms
What is the smallest unit of matter that still keeps elemental properties?
An atom
Which two particles are found inside the nucleus?
Protons and neutrons
What number tells you the element on the periodic table?
The atomic number
What table organizes elements by property & atomic number?
The periodic table
What is the name of the center of the atom
The nucleus
What determines an atoms' charge?
# of protons and electrons
What is the charge of an atom with the same number of protons and electrons?
0
What particle has no charge?
Neutron
What subatomic particle has a negative charge?
An electron
Total number of protons + electrons
What is the charge of an atom with more electrons than protons?
Negative (anion)
Who is credited for finding moles?
Avogardo
What subatomic particle determines the element of an atom?
Protons
What do you call an atom when it loses or gains electrons
An ion
What is the number of protons + neutrons called?
Mass number
Which scientist came up with the idea that electrons orbit the nucleus in fixed energy levels?
Niels Bohr
Atoms of he same element with the same number of protons but different numbers of neutrons are called what?
Isotopes
What's the name of the space where electrons are present within an atom
Electron cloud/orbital
Proton number
What law states that matter cannot be created nor destroyed during a chemical reaction?
The law of conservation mass