| A | B |
|---|
| Element Symbol | An abbreviation that represents an Element. |
| Atomic Number | Equal to the number of protons in the nucleus of an atom. |
| Mass Number | Equal to the mass of the nucleus. (protons + neutrons) |
| How do you find the number of neutrons in an atom? | = mass number - atomic number |
| How do you find the number of protons in an atom? | = atomic number |
| How do you find the number of electrons in an atom? | = atomic number |
| Isotope | A version of an atom that has a different number of neutrons. The mass of each isotope is averaged and shown as the mass number. |
| Average Atomic Mass | = (% abundance) * (mass isotope) + ... |
| What is the atomic number of Carbon (C)? | 6 |
| What is the atomic number of Zinc (Zn)? | 30 |
| What is the mass number of Nitrogen (N)? | 14.01 |
| What is the mass number of Sodium (Na)? | 22.99 |
| How many protons does Aluminum (Al) have? | 13 |
| How many protons does Neon (Ne) have? | 10 |
| How many electrons does Sulfur (S) have? | 16 |
| How many electrons does Titanium (Ti) have? | 22 |
| How many neutrons does Chlorine (Cl) have? | = round(35.45) - 17 = 35 - 17 = 18 |
| How many neutrons does Hydrogen have? | = round(1.01) - 1 = 1 - 1 = 0 |
| What element has the symbol "Ga"? | Galium (Ga) |
| What element has the symbol "Fe"? | Iron (Fe) |
| What element has the symbol "Cu"? | Copper (Cu) |
| What element has the symbol "Au"? | Gold (Au) |
| What element has the symbol "U"? | Uranium (U) |
| How many neutrons does the Carbon-13 isotope have? | Mass number = 13, Atomic Number = 6, neutrons = 13 - 6 = 7 |
| How many neutrons does the Carbon-12 isotope have? | Mass number = 12, Atomic Number = 6, neutrons = 12 - 6 = 6 |
| How many neutrons does the Carbon-12 isotope have? | Mass number = 14, Atomic Number = 6, neutrons = 14 - 6 = 8 |
