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Trimester 1: Types Of Chemical Equations
Test Description: Classifying Chemical Equations
Instructions: Answer all questions to get your test result.
1) During which chemical reaction is oxygen (O2) added to a hydrocarbon to form carbon dioxide (CO2) and water (H2O)?
A
decomposition
B
single displacement / replacement
C
synthesis / combination
D
combustion
2) Which statment best describes what occurs during the following reacction: F2 + energy = F + F?
A
Energy is released as a bond is formed.
B
Energy is released as a bond is broken.
C
Energy is absorbed as a bond is formed.
D
Energy is absorbed as a bond is broken.
3) 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 released as a bond is broken.
C
Energy is released as a bond is formed.
D
Energy is absorbed as a bond is broken.
4) What type of reaction is represented by the equation: 3F2 + 2FeI3 = 3I2 + 2FeF3?
A
decomposition
B
single replacement / displacement
C
synthesis / combination
D
combustion
5) Which chemical equation represents a double replacement / displacement reaction?
A
2Na + Cl2 = 2NaCl
B
Zn + 2HCl = ZnCl2 + H2
C
2KCLO3 = 2KCl + 3O2
D
NaOH + HCl = NaCl + H2O
6) What is an environmental indicator of an exothermic reaction?
A
all of the above
B
condensation forms
C
thermometer temperature rises
D
thermometer temperature falls
7) In an endothermic reaction
A
energy is neither absorbed or released
B
reactants absorb more energy than products release
C
reactants and products absorb and release equal amounts of energy
D
products absorb more energy than reactants release
8) During what type of chemical reaction is one product formed from multiple reactants?
A
synthesis / combination
B
decomposition
C
single replacement / displacement
D
combustion
9) Which of the following accurately represents a decomposition reaction?
A
NaOH + HCl = NaCl + H2O
B
Zn + 2HCl = ZnCl2 + H2
C
2KCLO3 = 2KCl + 3O2
D
2Na + Cl2 = 2NaCl
10) What type of graph represents endothermic and exothermic reactions?
A
mass - volume
B
enthalpy
C
BOTG
D
position - time
*select an answer for all questions
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