IGCSE O Level Chemistry Practice Test 111

Making and Breaking Bonds Quiz PDF: Questions and Answers - 111

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The Quiz: Overall energy change can be calculated by; "Making & Breaking Bonds" App Download (Android & iOS) Free with answers adding the energy taken in when bonds are broken and the energy given out, when bonds are made, subtracting the energy taken in when bonds are broken from the energy given out, when bonds are made, subtracting the energy given out when bonds are made from the energy taken in, when bonds are broken and multiplying all the enthalpy changes to study online schools courses. Practice energy from chemicals questions and answers, Google eBook to download free sample for ACT practice test.

Making & Breaking Bonds Questions and Answers PDF Download: Quiz 111

MCQ 551: Overall energy change can be calculated by

subtracting the energy taken in when bonds are broken from the energy given out, when bonds are made
adding the energy taken in when bonds are broken and the energy given out, when bonds are made
subtracting the energy given out when bonds are made from the energy taken in, when bonds are broken
multiplying all the enthalpy changes

MCQ 552: Ca(OH)₂ indicates that the molecule is formed through

two Ca ions and one OH ion
One Ca ion and two OH ions
three Ca ion and two OH ions
four Ca ion and two OH ions

MCQ 553: Digestive fluids in the stomach have a pH of

MCQ 554: It cannot be split into simpler substances through chemical processes. It is

a matter
an element
a metal
an atom

MCQ 555: In Calcium Hydroxide (Ca(OH)₂), valency of Ca is

−1
−2
+1
+2

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