Ouestion no 10 answer is first and 11 is 3
Ca ionises into Ca^2+. Ca^2+ will be attracted to O^2- ions in the water, since opposite charges attract. (Hydrogen in water forms H^+)
C is your answer. Because if you add two of them together you get a compound.
Answer:
A nucleus collides with a neutron and splits, releasing energy.
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Answer: try watchong videos search up what you just say and wtch the videos it could help
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