NEW
Font size
WorksheetsAtomic structure and radioactivity
Total questions: 20
Worksheet time: 12mins
Under the guidence of Rutherford, what particle did Geiger & Marsden fire at gold foil?
Neutron
Alpha
Proton
Electron
What is the charge of electron?
1.6x10-19 C
-1.6x10-19C
1.6x1019C
-1.6x1019C
What is radioactivity?
It this the process when nuclei absorb radio wave
It this the process when unstable nuclei emit radiation
It is the process when unstable nuclei absorb radar
It this the process when unstable nuclei emit radar
With which nuclei does alpha particle is like?
Hydrogen nuclei
Helium nuclei
Carbon Nuclei
Aluminium nuclei
In Rutherford experiment, a very few alpha particle is bounce back. What does this statement means!
The atom consisted of positively charge particle called proton which cover all of the atom while very small part of it is electron
The atom hits a very dense part of atom which very small later called nucleus
An atom consisted of negatively charge particle called electron which surround the nucleus
Atom consisted mostly dense part
In Rutherford experiment, why the air has to be pumped out of the experiment instrument?
Because alpha particle can easily stopped by air molecule
Because alpha particle is negatively charge
Because alpha particle is electrically neutral
Because alpha particle is like hydrogen nuclei
What the nucleus of an atom is consisted of?
Proton and Neutron
Proton and Electron
Neutron and Electron
Positron and Eectron
Proton and neutron in the nucleus are collectively called?
nucleon
neuron
Nuclei of the same element with different numbers of neutron but the same number of proton is called?
isobar
isoton
isotope
isomer
A Lithium nuclei has relative mass number of 7. If the number of proton inside the nucleus are 3, how many neutron are there in the nucleus
1
2
3
4
nucleon number for neutral aluminium is 27. If the number of proton inside the nuclei is 13 what is the number of electron?
13
14
15
16
What is the force that keep proton and neutron inside the nucleus?
Electrostatic force
Strong nuclear force
Gravitational force
Frictional force
Atoms that has number of proton more than 83 are unstable, what they do in order to become more stable?
By radioactive emission
By radioactive absorbtion
What does the atomic number represents?
the number of proton
the number of neutron
What is the charge of alpha particle?
Positive
Negative
Neutral
