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Questions

Explanations

26 Which type of reaction occurs when H⁺(aq) reacts with OH^-(aq)?

(1) combustion         (3) fermentation

(2) decomposition    (4) neutralization

H+  +  OH- ==> H2O

27 According to one acid-base theory, a molecule acts as an acid when the molecule

(1) accepts an H⁺               (3) donates an H⁺

(2) accepts an OH^-            (4) donates an OH^-

28 In which type of reaction can an atom of one element be converted to an atom of another element?

(1) addition         (3) substitution

(2) reduction      (4) transmutation

29 An unstable nucleus spontaneously releases a positron. This is an example of

(1) radioactive decay

(2) nuclear fusion

(3) chemical decomposition

(4) thermal conductivity

30 Which phrase describes a risk associated with producing energy in a nuclear power plant?

(1) depletion of atmospheric hydrogen (H₂)

(2) depletion of atmospheric carbon dioxide (CO₂)

(3) production of wastes needing long-term storage

(4) production of wastes that cool surrounding water supplies

Questions 1-5 Questions 6-10 Questions 11-15 Questions 16-20 Questions 21-25 Questions 26-30 Questions 31-35 Questions 36-40 Questions 41-45 Questions 46-50

Questions 51-54
 Questions 55-56 Questions 57-59 Questions 60-62 Questions 63-65  Questions 66  Questions 67-69  Questions 70-72 Questions 73-77 Questions 78-81 Questions 82-85