N/A — Exam Answers

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1
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Which ranks the solutions from the strongest to weakest acid?

A
cap y rightarrow cap w rightarrow cap x rightarrow cap z
B
cap w rightarrow cap x rightarrow cap z rightarrow cap y
C
cap y rightarrow cap z rightarrow cap x rightarrow cap w
D
cap w rightarrow cap x rightarrow cap y rightarrow cap z
2
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Which change of state is shown in the model?

A
condensation
B
freezing
C
sublimation
D
boiling
3

What is the chemical formula for the molecule represented by the model?

A
CHO
B
cap c sub 3 cap h sub 8 cap o sub 2
C
cap c sub 4 cap h sub 8 cap o
D
cap c sub 4 cap h sub 9 cap o sub 2
4

Which statement is best supported by the information in the chart?

A
The weight is the heaviest object.
B
The weight is heavier than Object 2.
C
Object 1 is the heaviest object.
D
Object 3 is heavier than Object 1.
6

Which label belongs in the region marked X?

A
produces neutrons
B
forms heavier atoms
C
joins two nuclei
D
forms lighter nuclei
8

Atoms from which two elements would form ionic bonds?

A
argon and iodine
B
calcium and gold
C
gold and argon
D
iodine and calcium
11

Which label should be written in the area marked cap x ?

A
reacts with carbonates
B
produces OH raised to the negative power ions
C
conducts electric current
D
tastes sour
12

A sample of a solid nonmetal is compared to a sample of a solid metal. Both samples have the same volume. What is the most likely difference between the two samples?

A
The metal takes up more space.
B
The nonmetal has more mass.
C
The metal has more mass.
D
The nonmetal takes up more space.
13

A solution is oversaturated with solute. Which could be done to decrease the oversaturation?

A
cool the solution
B
add a different solute
C
add more solute
D
dilute the solution
15

Which properties do metalloids share with metals?

A
Both are brittle and are gases at room temperature.
B
Both are shiny and are solid at room temperature.
C
Both are very conductive and are dull.
D
Both are shiny and are brittle.
16

Talia plugs her lamp into the wall and turns it on. To make the lamp work, which properties of metals in the lamp’s wires are most important?

A
conduction and shininess
B
ductility and conduction
C
malleability and ductility
D
shininess and malleability
17

How would an electron shell model of an oxygen atom cap o appear after the atom has formed chemical bonds?

A
It would have six electrons in the outermost shell.
B
It would have eight electrons in the outermost shell.
C
It would have six electrons in the innermost shell.
D
It would have eight electrons in the innermost shell.
18

How much of a sample remains after five half-lives have occurred?

A
1 fifth of the original sample
B
1 over 25 of the original sample
C
1 over 32 of the original sample
D
1 over 64 of the original sample
19

A radioactive nuclide that is used for geological dating has an atomic number of 19 and mass number 40 . Which is the symbol of this nuclide?

A
19 to the 40th power cap k
B
21 to the 19th power cap k
C
19 to the 21th power cap k
D
40 to the 19th power cap k

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