Radiation
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Which part of the atom emits radiation
The nucleus
Why do some atoms emit radiation
The nuclei is unstable
Give the relative mass, charge and symbol of an alpha particle
4 He2+ 2
Give the relative mass, charge and symbol of an beta particle
0 e -1
What are Gamma rays
waves of energy
What is the mass and charge of Gamma rays
1 0
How far can alpha particles travel in the air and what can be used to stop the particles
few cm paper
How far can beta particles travel in the air and what can be used to stop the particles
1 metre Aluminium
How far can gamma rays travel in the air and what can be used to stop the particles
Long distance Lead or concrete
Which particle would be attracted to a positive charge?
Beta
Which particle would be attracted to a negative charge?
Alpha
Which particle would not be affected by an electric field
Gamma
Define the term half life
The time taken for the atoms in a sample to decay by half.
What methods could be used to identify a metal in a solution
flame testing
What does it mean by concordant titre results
Results within 0.2cm3 of each other
What is the definition of the term “standard solution”
A solution of accurately known concentration
Define a precipitation reaction
2 liquids making a solid ( insoluble salt)