Nuclear Reactions
Chemistry ⇒ Nuclear Chemistry
Nuclear Reactions starts at 10 and continues till grade 12.
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See sample questions for grade 10
Describe the difference between alpha, beta, and gamma radiation.
Describe the process of beta-minus decay.
Explain why nuclear fusion is not yet widely used for power generation on Earth.
What is a nuclear reaction?
What is meant by the term 'chain reaction' in nuclear chemistry?
What is the main danger associated with uncontrolled nuclear chain reactions?
A radioactive isotope has a half-life of 5 years. If you start with 80 grams, how much will remain after 15 years?
A sample of a radioactive isotope has a half-life of 10 years. How much of the original sample will remain after 20 years? (1) 1/2 (2) 1/4 (3) 1/8 (4) 1/16
A sample of a radioactive isotope has a half-life of 10 years. How much of the original sample will remain after 20 years? (1) 1/2 (2) 1/4 (3) 1/8 (4) 1/16
Which of the following best describes a nuclear chain reaction? (1) A single reaction that stops immediately (2) A reaction that produces energy without any byproducts (3) A series of reactions where each reaction causes further reactions (4) A reaction that only occurs in stars
Which of the following best describes beta decay? (1) Emission of a helium nucleus (2) Emission of an electron or positron (3) Absorption of a neutron (4) Splitting of a nucleus
Which of the following is a balanced nuclear equation for the alpha decay of uranium-238? (1) 238U → 234Th + 4He (2) 238U → 239Np + 1n (3) 238U → 238Pu + 0e (4) 238U → 234Pa + 4He
Fill in the blank: In a nuclear reactor, the material used to slow down neutrons is called a __________.
Fill in the blank: The emission of a beta particle increases the __________ number of the nucleus by one.
Fill in the blank: The equation E = mc2 was proposed by __________.
Fill in the blank: The nuclear reaction that powers hydrogen bombs is __________.
True or False: Gamma radiation consists of high-energy electromagnetic waves.
True or False: In nuclear fission, a heavy nucleus splits into two or more lighter nuclei.
True or False: Nuclear fusion occurs naturally in the sun.
True or False: The atomic number of an element changes during beta decay.
