Element-Term | Symbol-Definition |
Hydrogen | H |
Lithium | Li |
Boron | B |
Nitrogen | N |
Fluorine | F |
Sodium | Na |
Aluminum | Al |
Phosphorus | P |
Chlorine | Cl |
Potassium | K |
Gold | Au |
Copper | Cu |
Mercury | Hg |
Helium | He |
Beryllium | Be |
Carbon | C |
Oxygen | O |
Neon | Ne |
Magnesium | Mg |
Silicon | Si |
Sulfur | S |
Argon | Ar |
Calcium | Ca |
Silver | Ag |
Krypton | Kr |
What is a chemical symbol? | A one or two-letter representation of an element (Si, Ar, Mg, etc.) |
What is a group? | Elements in the same vertical column of the periodic table (Same thing as a family) |
What is a family? | Elements in the same vertical column of the periodic table (Same thing as a group) |
What is a period? | A horizontal row of elements in the periodic table. |
What is a valence electron? | One of the furthest electrons from the center of the nucleus, the ones in the outer shell. |
What is a proton? | A small, positively charged particle in the nucleus of an atom. |
What is an electron? | A small, negatively charged particle in the nucleus of an atom. |
What is a neutron? | A small particle with no charge in the nucleus of an atom. |
What is AMU? | Atomic Mass Unit - A unit used to measure the mass of particles in atoms. |
What is an atomic number? | The number of protons in the nucleus of an atom. |
What is the periodic table? | A chart of elements. |
What is atomic mass? | The average mass of an atom. |
The number of ______ and ______ in an element are equal. | Protons and electrons. |
To find Atomic Mass : | Subtract the number of neutrons from the number of protons. |
To find the number of neutrons : | Subtract the Atomic Number from the Atomic Mass. (Round the atomic mass to the nearest whole number)/ |