.
Protons
Neutrons
Electrons
Orbitals
2, 8, 8, 18
2, 4, 6, 8
2, 14, 26, 28
2, 2, 8, 12
Negative ion
Positive ion
Polyatomic ion
Neutral ion
Single atoms
Molecules
Compound
Element
Single atoms
Molecules
Compound
Element
Single atoms
Molecules
Elements
Mixture
Copper + oxygen -> carbon dioxide
Copper + oxygen -> copper sulfide
Copper + oxygen -> copper oxide
Copper + oxygen -> copper iodide
Cl, P, Co, So, Ni, I
Cl, K, Cu, Na, N, Fe
Cl, K, Co, So, N, Fe
Cl, Po, Co, Na, N, Fe
A combination of two protons and two electrons
A combination of two or more chemical elements bonded together
A mixture of two or more chemical elements
Any substance that contains chemically bonded particles
Sea water
Distilled water
Iron oxide
Oxygen
Cobolt and helium
Copper and holmium
Carbon and hydrogen
Carbon and helium
There are approximately 118 identified elements
An element is defined by its number of electrons - this is how elements are ordered in the periodic table
An element's atomic number indicates its number of protons
You can find an element's neutrons by subtracting the number of protons from the atomic mass
5
8
9
13
1,7
10, 7
2, 8, 7
2, 8, 8, 18
Electrons
Occupied shells
Protons
Valence electrons
2
2, 7
2, 8, 2
2, 8, 7
500
505
503
55
Mass cannot be created but it can be destroyed under extreme pressures.
When added to a system, energy can destroy mass.
The mass of a closed system cannot change over time; mass cannot be created nor destroyed.
Mass cannot be conserved during a chemical reaction; a little bit of mass is always lost.
To eliminate all measurement errors.
To change data as necessary.
To make sure you prove the law.
To know the level of accuracy of your measurements.
The gases released
The reactants
The solids put into the reaction
The whole system
It is positively charged
It is negatively charged
It is the location of protons
It is the location of electrons
It is the location of neutrons
It contains most of the mass of an atom
It contains most of the volume of an atom
Valences
Ions
Isotopes
Molecules
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