Trimester 1: Types Of Chemical Equations Question Preview (ID: 30482)


Classifying Chemical Equations. TEACHERS: click here for quick copy question ID numbers.

During which chemical reaction is oxygen (O2) added to a hydrocarbon to form carbon dioxide (CO2) and water (H2O)?
a) decomposition
b) synthesis / combination
c) single displacement / replacement
d) combustion

Which statment best describes what occurs during the following reacction: F2 + energy = F + F?
a) Energy is absorbed as a bond is formed.
b) Energy is absorbed as a bond is broken.
c) Energy is released as a bond is formed.
d) Energy is released as a bond is broken.

Which statment best describes what occurs during the following reacction: F2 = F + F + energy?
a) Energy is absorbed as a bond is formed.
b) Energy is absorbed as a bond is broken.
c) Energy is released as a bond is formed.
d) Energy is released as a bond is broken.

What type of reaction is represented by the equation: 3F2 + 2FeI3 = 3I2 + 2FeF3?
a) synthesis / combination
b) combustion
c) decomposition
d) single replacement / displacement

Which chemical equation represents a double replacement / displacement reaction?
a) 2Na + Cl2 = 2NaCl
b) 2KCLO3 = 2KCl + 3O2
c) NaOH + HCl = NaCl + H2O
d) Zn + 2HCl = ZnCl2 + H2

What is an environmental indicator of an exothermic reaction?
a) thermometer temperature rises
b) thermometer temperature falls
c) condensation forms
d) all of the above

In an endothermic reaction
a) reactants and products absorb and release equal amounts of energy
b) reactants absorb more energy than products release
c) products absorb more energy than reactants release
d) energy is neither absorbed or released

During what type of chemical reaction is one product formed from multiple reactants?
a) decomposition
b) combustion
c) single replacement / displacement
d) synthesis / combination

Which of the following accurately represents a decomposition reaction?
a) 2KCLO3 = 2KCl + 3O2
b) Zn + 2HCl = ZnCl2 + H2
c) 2Na + Cl2 = 2NaCl
d) NaOH + HCl = NaCl + H2O

What type of graph represents endothermic and exothermic reactions?
a) mass - volume
b) enthalpy
c) BOTG
d) position - time

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