Nuclear Reactions
Chemistry ⇒ Nuclear Chemistry
Nuclear Reactions starts at 10 and continues till grade 12.
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See sample questions for grade 11
A nuclear reaction is represented as 27Al + 4He → 30P + X. What is X?
A sample of 60Co undergoes beta decay. What is the daughter nucleus?
Calculate the missing particle in the reaction: 14N + 4He → 17O + _____.
Describe what happens during beta-minus (β-) decay.
Explain the difference between alpha, beta, and gamma emissions in nuclear reactions.
Explain why mass is not strictly conserved in nuclear reactions.
In a nuclear reaction, what does the symbol 1H2 represent?
State one difference between natural and artificial nuclear reactions.
Which of the following best describes a chain reaction? (1) A reaction that stops after one step (2) A reaction where products initiate further reactions (3) A reaction that only occurs in stars (4) A reaction that does not release energy
Which of the following best explains why a chain reaction can be sustained in uranium-235 but not in uranium-238? (1) U-235 absorbs neutrons more easily (2) U-238 is more stable (3) U-235 releases more energy (4) U-238 is radioactive
Which of the following is a balanced nuclear equation for the beta decay of carbon-14? (1) 14C → 14N + e- + ν̄ (2) 14C → 13C + n (3) 14C → 14B + e- (4) 14C → 12C + 2n
Which of the following is a characteristic of nuclear reactions but not chemical reactions? (1) Involvement of electrons (2) Change in atomic nuclei (3) Formation of new compounds (4) Conservation of mass only
Fill in the blank: The equation E = mc2 relates energy and __________.
Fill in the blank: The nuclear reaction 2H + 3H → 4He + _____ is an example of fusion.
Fill in the blank: The particle represented by 0n1 is called a __________.
Fill in the blank: The process in which two light nuclei combine to form a heavier nucleus is called __________.
The sum of the mass numbers and the sum of the atomic numbers are conserved in a nuclear reaction. (Yes/No)
True or False: Gamma emission changes the atomic number of a nucleus.
True or False: In a nuclear reaction, the total number of protons and neutrons is always conserved.
True or False: In nuclear fission, a heavy nucleus splits into two or more lighter nuclei.
