CHEM 1205 Exam 1 Questions With
Correct Answers
conversion |for |1km |to |m |- |CORRECT |ANSWER✔✔-1 |km= |1000m
conversion |for |1m |to |mm |- |CORRECT |ANSWER✔✔-1 |m= |1000mm
conversion |for |1m |to |cm |- |CORRECT |ANSWER✔✔-1 |m= |100cm
conversion |for |1kL |to |L |- |CORRECT |ANSWER✔✔-1 |kL= |1000 |L
conversion |for |1L |to |mL |- |CORRECT |ANSWER✔✔-1 |L= |1000mL
What |is |specific |gravity? |- |CORRECT |ANSWER✔✔--a |quantity |that |compares |the |density |of |a |
substance |with |the |density |of |water |at |4*C
-SG= |density |of |a |substance |(g/ml) |over |density |of |water |(g/ml)
What |are |the |properties |of |metals? |- |CORRECT |ANSWER✔✔--shiny |substances |that |conduct |
heat |and |electricity, |solid |at |room |temp, |ductile |and |malleable
What |are |the |properties |of |metalloids? |- |CORRECT |ANSWER✔✔--have |properties |of |both |
metals |and |nonmetals, |shiny |like |metals |but |do |not |conduct |electricity
What |are |the |properties |of |nonmetals? |- |CORRECT |ANSWER✔✔-poor |conductors |of |heat |and |
electricity, |have |a |dull |appearance, |may |be |solid |liquid |or |gas
, What |are |the |four |building |block |elements? |- |CORRECT |ANSWER✔✔-oxygen, |carbon |
hydrogen, |nitrogen
What |is |atomic |mass |unit? |- |CORRECT |ANSWER✔✔-the |mass |of |individual |atoms |relative |to |a |
standard |mass
What |are |isotopes? |- |CORRECT |ANSWER✔✔--two |atoms |of |the |same |element |always |have |the
|same |number |of |protons, |but |the |number |of |neutrons |can |vary
-mass |number |(A)= |number |of |protons |(Z) |+ |the |number |of |neutrons
What |is |atomic |weight/ |mass? |- |CORRECT |ANSWER✔✔-weighted |average |of |the |mass |of |the |
naturally |occurring |isotopes |of |a |particular |element |reported |in |atomic |mass |units
What |are |properties |of |alkali |metals? |- |CORRECT |ANSWER✔✔--located |in |group |1
-soft |and |shiny |and |have |low |melting |points
-good |conductors |of |heat |and |electricity
-react |readily |with |water |to |form |basic |solutions
What |are |the |properties |of |alkaline |earth |elements? |- |CORRECT |ANSWER✔✔--located |in |group
|2
-shiny |solids |but |less |reactive |than |the |alkali |metals
How |many |electrons |can |the |first |shell |hold? |- |CORRECT |ANSWER✔✔-2 |electrons
How |many |electrons |can |the |second |shell |hold? |- |CORRECT |ANSWER✔✔-8 |electrons
How |many |electrons |can |the |third |energy |level |hold? |- |CORRECT |ANSWER✔✔-18 |electrons
Correct Answers
conversion |for |1km |to |m |- |CORRECT |ANSWER✔✔-1 |km= |1000m
conversion |for |1m |to |mm |- |CORRECT |ANSWER✔✔-1 |m= |1000mm
conversion |for |1m |to |cm |- |CORRECT |ANSWER✔✔-1 |m= |100cm
conversion |for |1kL |to |L |- |CORRECT |ANSWER✔✔-1 |kL= |1000 |L
conversion |for |1L |to |mL |- |CORRECT |ANSWER✔✔-1 |L= |1000mL
What |is |specific |gravity? |- |CORRECT |ANSWER✔✔--a |quantity |that |compares |the |density |of |a |
substance |with |the |density |of |water |at |4*C
-SG= |density |of |a |substance |(g/ml) |over |density |of |water |(g/ml)
What |are |the |properties |of |metals? |- |CORRECT |ANSWER✔✔--shiny |substances |that |conduct |
heat |and |electricity, |solid |at |room |temp, |ductile |and |malleable
What |are |the |properties |of |metalloids? |- |CORRECT |ANSWER✔✔--have |properties |of |both |
metals |and |nonmetals, |shiny |like |metals |but |do |not |conduct |electricity
What |are |the |properties |of |nonmetals? |- |CORRECT |ANSWER✔✔-poor |conductors |of |heat |and |
electricity, |have |a |dull |appearance, |may |be |solid |liquid |or |gas
, What |are |the |four |building |block |elements? |- |CORRECT |ANSWER✔✔-oxygen, |carbon |
hydrogen, |nitrogen
What |is |atomic |mass |unit? |- |CORRECT |ANSWER✔✔-the |mass |of |individual |atoms |relative |to |a |
standard |mass
What |are |isotopes? |- |CORRECT |ANSWER✔✔--two |atoms |of |the |same |element |always |have |the
|same |number |of |protons, |but |the |number |of |neutrons |can |vary
-mass |number |(A)= |number |of |protons |(Z) |+ |the |number |of |neutrons
What |is |atomic |weight/ |mass? |- |CORRECT |ANSWER✔✔-weighted |average |of |the |mass |of |the |
naturally |occurring |isotopes |of |a |particular |element |reported |in |atomic |mass |units
What |are |properties |of |alkali |metals? |- |CORRECT |ANSWER✔✔--located |in |group |1
-soft |and |shiny |and |have |low |melting |points
-good |conductors |of |heat |and |electricity
-react |readily |with |water |to |form |basic |solutions
What |are |the |properties |of |alkaline |earth |elements? |- |CORRECT |ANSWER✔✔--located |in |group
|2
-shiny |solids |but |less |reactive |than |the |alkali |metals
How |many |electrons |can |the |first |shell |hold? |- |CORRECT |ANSWER✔✔-2 |electrons
How |many |electrons |can |the |second |shell |hold? |- |CORRECT |ANSWER✔✔-8 |electrons
How |many |electrons |can |the |third |energy |level |hold? |- |CORRECT |ANSWER✔✔-18 |electrons
