Atomic Mass and Diameter (Grade 10 NSC Matric Physical Sciences): Flashcards
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Atomic mass unit (amu) purpose
Atomic mass unit (amu) purpose
Special unit to compare masses of different atoms
Carbon standard atomic mass value
Carbon standard atomic mass value
Exactly 12.0 u
1 amu in kg
1 amu in kg
kg
Particles Rutherford fired at gold foil
Particles Rutherford fired at gold foil
Alpha particles (positively charged)
Main observation in Rutherford's experiment
Main observation in Rutherford's experiment
Most alpha particles passed straight through
Charge of atomic nucleus (Rutherford)
Charge of atomic nucleus (Rutherford)
Positively charged
Size of nucleus compared to atom
Size of nucleus compared to atom
Very small, atom mostly empty space
Where most of atom's mass is located
Where most of atom's mass is located
In the nucleus
If atom = football stadium, nucleus size
If atom = football stadium, nucleus size
Size of a pea
Relative atomic mass definition
Relative atomic mass definition
Average mass of element's naturally occurring isotopes