1.7.3. Energy resources
A subsection of Physics, 0625, through 1. Motion, forces and energy
Listing 10 of 215 questions
There are three naturally occurring isotopes of hydrogen: hydrogen-1, hydrogen-2 and hydrogen-3. The nuclide notation for hydrogen-1 is 1 1H. Write down the symbol, using nuclide notation, for: hydrogen-2 hydrogen-3. In a fusion reactor, a nucleus of hydrogen-2 and a nucleus of hydrogen-3 undergo fusion. State what is meant by nuclear fusion. The fusion reaction produces a free neutron and one other particle. Write down, using nuclide notation, the equation that represents this reaction. Nuclear fusion in the Sun is the source of most but not all of the resources that are used to generate electrical energy on Earth. State two resources for which nuclear fusion in the Sun is not the source. 1. 2.
0625_s21_qp_41
THEORY
2021
Paper 4, Variant 1
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