| Quiz | Developing the model of the atom |
|---|---|
| Name | |
| Result | FAILED |
| Score | 29 / 66 (43.9%) |
| Passing score | 52.8 |
| Quiz took | 1 h 42 min 34 sec |
| Quiz finished at | 2023-03-01 07:54:55 |
A mass has a half life of 20 minutes. Its initial count is 200 Bq. What is its count after one hour?
{}_{88}{}^{222}Ra \to {}_{86}{}^{}Rn + {}_{2}{}^{4}He What is the missing mass number in the equation above?
In nuclear fission, energy is often carried away by ________
Atoms are mostly
A nuclear weapon is made from nuclear
{}_{}{}^{131}I \to {}_{54}{}^{131}Xe + {}_{-1}{}^{0}e What is the missing atomic number in the equation above?
Fusion is the _________ of atoms
A proton has a relative mass of
This subatomic particle has a positive charge
Atoms become positively charged particles called positive ions when they lose ________
This subatomic particle has a neutral charge
______ is the least ionising
In the gold leaf experiment, _________ were fired at gold foil
Which of the following is NOT commonly caused by radiation sickness?
Isotopes have different numbers of
Consider nuclear fission equations. How many products are greenhouse gases?
How many neutrons does a {}_{14}{}^{30}Si atom have?
Why was gold used by Rutherford and Marsden?
____________ is temporary exposure to radiation.
In nuclear fission, energy is often converted into electricity by
______ is the most ionising
A neutron has a relative mass of
What atomic number does a {}_{14}{}^{30}Si atom have?
An electron will move from a higher to a lower orbit, if it ______ electromagnetic radiation
This subatomic particle has a negative charge
In an atom the number of electrons is equal to the number of protons. There is _______ net charge on the atom.
Radioactive _________ is the unwanted presence of radioactive material on or inside other materials or human bodies.
How many electrons does a {}_{14}{}^{30}Si atom have?
_______ orbit the nucleus
Gamma radiation is
Fission is the ________ of atoms
_________ discovered that neutral particles called neutrons where found in the nucleus of an atom
This subatomic particle has a negligible mass
_______ is ionising radiation from an external radioactive source travelling to the body – it is not breathed in, eaten or drunk.
The sun makes its energy from nuclear
_________ is the rate at which a source of unstable nuclei decays.
Activity is measured in
What is the mass number of a {}_{14}{}^{30}Si atom?
Radiation dose is commonly measured in
Which of these is not a common source of background radiation
Nuclear fission can result in ________ reactions
____________ occurs when radioactive atoms get stuck onto objects or living organisms.
_______ showed that electrons had to orbit a positive nucleus in energy levels
This can be used to kill cancer cells
For nuclear fusion, we would require
High doses of radiation can kills cells, so radiation can be used to kill cancer cells. This treatment is known as
______ is the most penetrating
How many protons does a {}_{14}{}^{30}Si atom have?
Which of the following requires thick lead of several metres of concrete to block it?
In the gold film experiment, most of the alpha particles went straight through because atoms are
A _________ can be used to detect nuclear radiation.
An electron will move from a lower to a higher orbit, if it ______ electromagnetic radiation
This can be used to ensure the thickness of paper is correct
This can be used to make food last longer
__________ came up with the plum pudding model for the atom
This can be used to sterilise surgical equipment
Isotopes have the same numbers of
A nuclear weapon is made from uncontrolled
Which of these is not a common source of background radiation
______ is the least penetrating
Which of these was shot at gold film in a famous experiment?
This can be used in smoke alarms
Nuclear _________ is carried out on Earth in power plants
The gold leaf experiment was conducted by
A beta particle is
An alpha particle is