| Quiz | Developing the model of the atom |
|---|---|
| Name | |
| Result | PASSED |
| Score | 65 / 66 (98.5%) |
| Passing score | 52.8 |
| Quiz took | 5 min 27 sec |
| Quiz finished at | 2023-12-06 09:22:11 |
Atoms are mostly
A mass has a half life of 20 minutes. Its initial count is 200 Bq. What is its count after one hour?
____________ is temporary exposure to radiation.
How many protons does a {}_{14}{}^{30}Si atom have?
Isotopes have different numbers of
A neutron has a relative mass of
Atoms become positively charged particles called positive ions when they lose ________
In the gold film experiment, most of the alpha particles went straight through because atoms are
Which of these is not a common source of background radiation
The gold leaf experiment was conducted by
A nuclear weapon is made from nuclear
Fission is the ________ of atoms
Which of the following is NOT commonly caused by radiation sickness?
This can be used in smoke alarms
This can be used to ensure the thickness of paper is correct
______ is the least ionising
How many neutrons does a {}_{14}{}^{30}Si atom have?
Radioactive _________ is the unwanted presence of radioactive material on or inside other materials or human bodies.
This subatomic particle has a neutral charge
_______ showed that electrons had to orbit a positive nucleus in energy levels
Which of these was shot at gold film in a famous experiment?
A _________ can be used to detect nuclear radiation.
_______ is ionising radiation from an external radioactive source travelling to the body – it is not breathed in, eaten or drunk.
High doses of radiation can kills cells, so radiation can be used to kill cancer cells. This treatment is known as
Radiation dose is commonly measured in
This subatomic particle has a positive charge
Isotopes have the same numbers of
_________ is the rate at which a source of unstable nuclei decays.
Which of the following requires thick lead of several metres of concrete to block it?
Nuclear _________ is carried out on Earth in power plants
In nuclear fission, energy is often converted into electricity by
What is the mass number of a {}_{14}{}^{30}Si atom?
Fusion is the _________ of atoms
__________ came up with the plum pudding model for the atom
Which of these is not a common source of background radiation
_________ discovered that neutral particles called neutrons where found in the nucleus of an atom
An electron will move from a lower to a higher orbit, if it ______ electromagnetic radiation
An electron will move from a higher to a lower orbit, if it ______ electromagnetic radiation
The sun makes its energy from nuclear
This subatomic particle has a negative charge
An alpha particle is
______ is the most penetrating
Activity is measured in
How many electrons does a {}_{14}{}^{30}Si atom have?
In an atom the number of electrons is equal to the number of protons. There is _______ net charge on the atom.
For nuclear fusion, we would require
______ is the most ionising
Gamma radiation is
What atomic number does a {}_{14}{}^{30}Si atom have?
In the gold leaf experiment, _________ were fired at gold foil
This subatomic particle has a negligible mass
This can be used to make food last longer
Nuclear fission can result in ________ reactions
This can be used to kill cancer cells
{}_{88}{}^{222}Ra \to {}_{86}{}^{}Rn + {}_{2}{}^{4}He What is the missing mass number in the equation above?
This can be used to sterilise surgical equipment
A nuclear weapon is made from uncontrolled
_______ orbit the nucleus
Why was gold used by Rutherford and Marsden?
A proton has a relative mass of
____________ occurs when radioactive atoms get stuck onto objects or living organisms.
In nuclear fission, energy is often carried away by ________
A beta particle is
Consider nuclear fission equations. How many products are greenhouse gases?
{}_{}{}^{131}I \to {}_{54}{}^{131}Xe + {}_{-1}{}^{0}e What is the missing atomic number in the equation above?
______ is the least penetrating