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Section 10:-CC3 Atomic Structure
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- 1AtomsAll matters is made of tiny particles called atoms.
Hard spheres that can’t be broken down into smaller parts.
Can’t be destroyed or created.
The atoms are elements are all identical. - 2The Structure of atomsProton
Neuton
Electron - 3Subatomic particlesEnter text here...
- 4Atoms in an elementsAlways have equal number of proton and electoral and have no overall charge,because the charges cancel out.
- 5The nuclear atomThat’s atoms are mostly empty spaces, with a small positive central nucleus that contains most of the mass.
- 6Atomic NumberElement in the periodic table were originally placed in order of the masses of their atoms.
Then similar properties were grouped together.
All the atoms of a particles element have the same unique atomic number. - 7Mass NumberTotal number of protons and neutrons in a atom is called its atom number
- 8Elements symbolsEnter text here...
- 9IsotopesThey have the same atomic number but different mass numbers.
Have same numbers of protons and electrons.
Different numbers of neutrons.
Chemically reacts the same way but has a different structure. - 10Nuclear FissionNew elements that transfers large amounts of energy.
- 11FissionEnter text here...
- 12Relative Atomic MassesIs the mean mass of an atom of an element compared.
- 13Relative atomic mass equationRelative atomic mass=total mass of the atom/the numbers of atoms
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- Flashcards on Section 19:-CC3 Atomic Structure , created by Soria Sediqi on 04/11/2017.
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