Chem 133 Midterm (2025) Actual Exam
Questions and Answers A+ Graded
Not .significant .- .CORRECT .ANSWER-Significant .or .not .significant? .Zeroes
.before .a .number .before .the .decimal .place.
Insignificant .- .CORRECT .ANSWER-Significant .or .not .significant? .Zeroes .before
.a .number .after .the .decimal .place.
Significant .- .CORRECT .ANSWER-Significant .or .not .significant? .Zeroes .after .a
.number .to .the .right .of .the .decimal .place.
Not .significant .- .CORRECT .ANSWER-Significant .or .not .significant? .Zeroes
.following .a .number .to .the .left .of .a .decimal .place .with .no .decimal .point.
Significant .- .CORRECT .ANSWER-Significant .or .not .significant? .Zeroes
.following .a .number .to .the .left .of .a .decimal .place .with .a .decimal .point.
Significant .- .CORRECT .ANSWER-Significant .or .not .significant? .Nonzero
.numbers
Significant .- .CORRECT .ANSWER-Significant .or .not .significant? .Zeroes .between
.nonzero .numbers
Report .the .numbers .you .know .and .estimate .one .additional .value. .- .CORRECT
.ANSWER-When .measuring .volume .or .mass .on .a .triple .beam .balance, .how .do
.you .report .the .correct .number .of .significant .figures?
Only .report .the .number .that .is .given .with .no .estimations. .- .CORRECT
.ANSWER-When .measuring .mass .on .an .electric .balance, .how .do .report .the
.correct .number .of .significant .figures?
It .having .more .significant .figures .following .the .decimal .point. .- .CORRECT
.ANSWER-What .makes .a .measuring .tool .more .precise?
Divide .the .mass .by .the .volume .- .CORRECT .ANSWER-How .do .you .calculate
.density .given .the .mass .and .volume .of .an .object?
Subtract .the .cumulative .mass .from .the .mass .of .the .object. .This .is .the .mass .of
.the .water, .which .is .also .the .volume .of .the .water .(if .not .water, .you .must .know
.density .of .liquid .to .solve). .Subtract .this .volume .from .the .volume .observed .to
.get .the .volume .of .the .material. .Then .divide .the .mass .and .volume .of .the .object.
Questions and Answers A+ Graded
Not .significant .- .CORRECT .ANSWER-Significant .or .not .significant? .Zeroes
.before .a .number .before .the .decimal .place.
Insignificant .- .CORRECT .ANSWER-Significant .or .not .significant? .Zeroes .before
.a .number .after .the .decimal .place.
Significant .- .CORRECT .ANSWER-Significant .or .not .significant? .Zeroes .after .a
.number .to .the .right .of .the .decimal .place.
Not .significant .- .CORRECT .ANSWER-Significant .or .not .significant? .Zeroes
.following .a .number .to .the .left .of .a .decimal .place .with .no .decimal .point.
Significant .- .CORRECT .ANSWER-Significant .or .not .significant? .Zeroes
.following .a .number .to .the .left .of .a .decimal .place .with .a .decimal .point.
Significant .- .CORRECT .ANSWER-Significant .or .not .significant? .Nonzero
.numbers
Significant .- .CORRECT .ANSWER-Significant .or .not .significant? .Zeroes .between
.nonzero .numbers
Report .the .numbers .you .know .and .estimate .one .additional .value. .- .CORRECT
.ANSWER-When .measuring .volume .or .mass .on .a .triple .beam .balance, .how .do
.you .report .the .correct .number .of .significant .figures?
Only .report .the .number .that .is .given .with .no .estimations. .- .CORRECT
.ANSWER-When .measuring .mass .on .an .electric .balance, .how .do .report .the
.correct .number .of .significant .figures?
It .having .more .significant .figures .following .the .decimal .point. .- .CORRECT
.ANSWER-What .makes .a .measuring .tool .more .precise?
Divide .the .mass .by .the .volume .- .CORRECT .ANSWER-How .do .you .calculate
.density .given .the .mass .and .volume .of .an .object?
Subtract .the .cumulative .mass .from .the .mass .of .the .object. .This .is .the .mass .of
.the .water, .which .is .also .the .volume .of .the .water .(if .not .water, .you .must .know
.density .of .liquid .to .solve). .Subtract .this .volume .from .the .volume .observed .to
.get .the .volume .of .the .material. .Then .divide .the .mass .and .volume .of .the .object.
