The History and Arrangement of the Periodic Table — Cumulative exam Answers
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21
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Chemists use activity series to determine whether which type of reaction will occur?
A
combustionB
double replacementC
decompositionD
single replacement22
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Which is a correct comparison between the modern quantum model and John Dalton’s model of the atom?
A
The modern model is not as widely accepted by scientists as Dalton’s model.B
The modern model states that atoms of all elements are identical, whereas Dalton’s model does not.C
The modern model recognizes particles in the atom, whereas Dalton’s model does not.D
The modern model does not explain emission spectra, whereas Dalton’s model does.23
Which equation is a decomposition reaction?
A
Li2CO3 Li2O + CO2
B
Zn + HCl ZnCl2 + H2
C
Na2O + CO2 Na2CO3
D
C6H12O6 + O2 CO2 + H2O
24
What is the ratio of Fe ions to O ions in a neutral compound?
A
1:2B
2:1C
2:3D
3:225
In an investigation that uses the scientific method, which step immediately follows asking a question?
A
presenting the resultsB
making observationsC
creating a hypothesisD
designing an experimentDid you find these answers helpful?
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