O Level Chemistry Practice Test 111

Making and Breaking Bonds Quiz Answers PDF Download - 111

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Chemistry: Making & Breaking Bonds MCQs Quiz PDF Download

MCQ: Overall energy change can be calculated by

A) subtracting the energy taken in when bonds are broken from the energy given out, when bonds are made

B) adding the energy taken in when bonds are broken and the energy given out, when bonds are made

C) subtracting the energy given out when bonds are made from the energy taken in, when bonds are broken

D) multiplying all the enthalpy changes

MCQ: Ca(OH)₂ indicates that the molecule is formed through

A) two Ca ions and one OH ion

B) One Ca ion and two OH ions

C) three Ca ion and two OH ions

D) four Ca ion and two OH ions

MCQ: Digestive fluids in the stomach have a pH of

A) 0

B) 2

C) 4

D) 6

MCQ: It cannot be split into simpler substances through chemical processes. It is

A) a matter

B) an element

C) a metal

D) an atom

MCQ: In Calcium Hydroxide (Ca(OH)₂), valency of Ca is

A) −1

B) −2

C) +1

D) +2

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