Flashcards
atom
Cards in this deck (8)
- 1WHAT IS AN ATOM?An atom is the smallest particle of an element that has all the chemical properties of that element
- 2Atomic TheoryPlum Pudding Model
- 3Sub-atomic Particles
- 4Electronic configuration It's how electrons are arranged in an atomEnergy levels
- 5Atomic Number This is the number of protons in an atom Number of protons = Number of electrons e.g Na has 11 protons, so it's atomic number is 11Mass Number
This is the total number of protons + neutrons in the atom. E.g a Sodium atom that has 11 protons and 12 neutrons will have a mass number of 23 - 6Nuclide Notation how to represent atoms by displaying their atomic and mass numbers
- 7NucleonsIsotopes
Atoms of the same element that have different number of neutrons
- 8Relative Atomic Mass (R.A.M) How many times does the mass of 1/12 th the mass of carbon fit into one atom of that element