| Quiz | Developing the model of the atom |
|---|---|
| Name | |
| Result | PASSED |
| Score | 54 / 66 (81.8%) |
| Passing score | 52.8 |
| Quiz took | 12 min 38 sec |
| Quiz finished at | 2023-05-30 07:24:10 |
Nuclear fission can result in ________ reactions
_______ orbit the nucleus
_________ is the rate at which a source of unstable nuclei decays.
__________ came up with the plum pudding model for the atom
Nuclear _________ is carried out on Earth in power plants
An alpha particle is
How many electrons does a {}_{14}{}^{30}Si atom have?
Which of the following is NOT commonly caused by radiation sickness?
For nuclear fusion, we would require
This can be used to sterilise surgical equipment
An electron will move from a higher to a lower orbit, if it ______ electromagnetic radiation
This can be used to ensure the thickness of paper is correct
A neutron has a relative mass of
_________ discovered that neutral particles called neutrons where found in the nucleus of an atom
A proton has a relative mass of
Atoms are mostly
In an atom the number of electrons is equal to the number of protons. There is _______ net charge on the atom.
______ is the least penetrating
Atoms become positively charged particles called positive ions when they lose ________
______ is the most penetrating
Which of these is not a common source of background radiation
How many neutrons does a {}_{14}{}^{30}Si atom have?
An electron will move from a lower to a higher orbit, if it ______ electromagnetic radiation
This subatomic particle has a positive charge
In nuclear fission, energy is often converted into electricity by
In the gold leaf experiment, _________ were fired at gold foil
Fission is the ________ of atoms
The gold leaf experiment was conducted by
____________ is temporary exposure to radiation.
This subatomic particle has a negative charge
______ is the least ionising
Which of these is not a common source of background radiation
The sun makes its energy from nuclear
Consider nuclear fission equations. How many products are greenhouse gases?
This can be used to make food last longer
This can be used to kill cancer cells
A nuclear weapon is made from uncontrolled
Activity is measured in
Why was gold used by Rutherford and Marsden?
_______ showed that electrons had to orbit a positive nucleus in energy levels
Gamma radiation is
Isotopes have different numbers of
High doses of radiation can kills cells, so radiation can be used to kill cancer cells. This treatment is known as
A mass has a half life of 20 minutes. Its initial count is 200 Bq. What is its count after one hour?
A _________ can be used to detect nuclear radiation.
In the gold film experiment, most of the alpha particles went straight through because atoms are
How many protons does a {}_{14}{}^{30}Si atom have?
What is the mass number of a {}_{14}{}^{30}Si atom?
____________ occurs when radioactive atoms get stuck onto objects or living organisms.
______ is the most ionising
_______ is ionising radiation from an external radioactive source travelling to the body – it is not breathed in, eaten or drunk.
{}_{88}{}^{222}Ra \to {}_{86}{}^{}Rn + {}_{2}{}^{4}He What is the missing mass number in the equation above?
Isotopes have the same numbers of
{}_{}{}^{131}I \to {}_{54}{}^{131}Xe + {}_{-1}{}^{0}e What is the missing atomic number in the equation above?
What atomic number does a {}_{14}{}^{30}Si atom have?
Fusion is the _________ of atoms
This subatomic particle has a negligible mass
A nuclear weapon is made from nuclear
In nuclear fission, energy is often carried away by ________
Radiation dose is commonly measured in
Radioactive _________ is the unwanted presence of radioactive material on or inside other materials or human bodies.
This subatomic particle has a neutral charge
Which of these was shot at gold film in a famous experiment?
This can be used in smoke alarms
A beta particle is
Which of the following requires thick lead of several metres of concrete to block it?