Atoms
What is a group of bonded atoms called?
Molecule or Compound
What is a subatomic particle?
A particle that is smaller than an atom.
What is an Isotope?
Atoms of the same element that have different mass numbers.
What is an ion?
An atom or group of atoms with a charge.
What are 2 examples of units of amounts?
Where was the person who thought of the idea of atoms from?
Ancient Greece
What are the three types of subatomic particles that make up an atom?
Protons, Electrons, and Neutrons
What is the atomic number?
Number of protons
How many particles are in a mole?
6.022x1023
Whether or not an element reacts with another element is what?
Chemical property
Which subatomic particle(s) do not contribute to the atom's mass?
Electrons
How do you calculate mass number?
Protons + Neutrons
If an atom has more protons than electrons, the charge is __________.
positive
What do we call the number 6.022x1023?
Avogadro's Number
What are the different parts of an atom?
Nucleus and Electron Cloud
Which subatomic particles determine the atom's charge?
Protons and Electrons
If an atom has 34 protons and 43 neutrons, what is its mass number?
77
An atom has 17 protons, 18 neutrons, and 16 electrons. What is the charge of this ion?
+1
Why do we not use moles outside of chemistry?
It is too big of a number to use with anything bigger than atoms/molecules.
All of the atom's mass is found where?
Nucleus
Which subatomic particle determines the chemical identity of an atom?
Protons
If an atom with 91 neutrons has a mass number of 167, what is the atom's identity?
Osmium (Os)
If a Arsenic atom has 36 electrons, what is its charge?
3-
What is the molar mass of Krypton?
83.80 g/mol