Atomic theory Flashcards
What are the five atomic models
Plum pudding positive and negative charges, nuclear model, planetary model and cloud model
How was the electron discovered?
The electron was discovered by using cathode ray tubes.
What does the plum pudding model show?
It shows there are electrons in atoms
How was the nucleus discovered?
In 1911, Rutherford discovered the nucleus by overwhelming a thin gold sheet with the alpha particles emitted by radium.
What is a atomic emission spectrum?
An atomic emission spectrum is the pattern of lines formed when light passes through a prism to separate it into the different frequencies of light it contains.
How many electrons can the first shell hold?
2
How many electrons can the second shell hold?
8
How many electrons can the third shell hold?
32
How do you find neutrons?
Subtracted the atomic number from the mass number
What colour does copper give?
Green
What colour does potassium give?
Pink
What colour does calcium give?
Red
What is alpha particles identity?
2 protons and 2 neutrons
What is beta particles identity?
Electron
What is gamma particles identity?
Electromagnetic wave
