Atom Diagram - Parts of an Atom
You can find this storyboard in the following articles and resources:
Understanding Atomic Structures
Lesson Plans by Amy Roediger
Science teachers often rely on analogies and comparisons to help students picture what an atom “looks like”. The following activities aim to help students understand the atom, as it serves as the foundation for the rest of chemistry and plays an important role in many parts of physics.
Storyboard Description
Atom Diagram - Parts of an Atom
Storyboard Text
- PROTON
- NEUTRON
- ELECTRON
- The proton is found in the NUCLEUS of the atom. It has a relative charge of +1 and a relative mass of 1 amu.
- ATOMIC NUMBER
- The atomic number is 3.
- The neutron is found in the NUCLEUS of the atom. It has a relative charge of 0 and a relative mass of 1 amu.
- MASS NUMBER
- The mass number is 7. 3 + 4 = 7
- The electron is found outside the NUCLEUS of the atom. It has a relative charge of -1 and a relative mass of ~0 amu.
- TRY IT!
- The atomic number tells us the number of PROTONS in an atom. Since atoms have no charge, it also tells us the number of ELECTRONS in an atom.
- The mass number is the sum of PROTONS + NEUTRONS in the atom. Since protons and neutrons each have a mass of 1 amu, their sum is the same as the mass.
- What are the atomic number and mass number of this atom?
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