CHEM 212 TEST 1 with accurate detailed ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
answers
An ice cube melting on the counter of a warm room is an example of a:
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a) physical property b) physical change
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c) chemical property d) chemical change - correct answer✔✔B. physical change
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An eggplant has stored up energy which I have the potential to access if I eat it. This is
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a:
a) physical property b) physical change
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c) chemical property d) chemical change - correct answer✔✔c. chemical property
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Which statement concerning laboratory safety is true: ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) The maid will come to clean your workbench every afternoon. Leave it as messy as you
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want.
b) If you want to leave early, start the lab experiment before everyone else shows up.
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c) It's fine to snack, chew gum, or have beverages in the lab classroom.
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d) If chemicals, heat, or glassware will be used in the lab, safety glasses must be worn. -
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correct answer✔✔d) If chemicals, heat, or glassware will be used in the lab, safety glasses
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must be worn ||\\//|| ||\\//||
1 gram is equal to exactly:
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a) 1 milligram ||\\//|| ||\\//||
||\\//|| b) 100 milligrams ||\\//|| ||\\//||
||\\//|| c) 0.01 milligrams||\\//|| ||\\//||
, ||\\//|| d) 1000 milligrams - correct answer✔✔d) 1000 milligrams
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The weight of an object is different from the mass due to the inclusion of:
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a) size ||\\//|| ||\\//||
b) gravity ||\\//|| ||\\//||
c) volume ||\\//|| ||\\//||
d) density - correct answer✔✔b) gravity
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How many significant figures will the number 0.002 have?
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a) 1 b) 2 c) 3 d) 4 - correct answer✔✔a) 1
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How many significant figures will the number 606000 have?
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a) 3 b) 2 c) 6 d) 4 - correct answer✔✔a) 3
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What is 58.00OC in terms of oF? ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) 0.22 oF b) 331 oF c) 14.44 oF d) 136.40 oF - correct answer✔✔d) 136.40 oF
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Which temperature scale has water freezing at 273? ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) Celsius b) Kelvin c) Centigrade d) Fahrenheit - correct answer✔✔b) Kelvin
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What is the density of an object weighing 4519 mg, with a volume of 0.26 L?
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a) 0.0174 g/mL b) 17,381 g/mL c) 17.38 g/mL d) 57.5 g/mL - correct answer✔✔a) 0.0174
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g/mL
If the density of an object is 3.66 g/mL, what is the volume of 4.50 grams of that object?
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a) 0.813 mL b) 16.47 mL c) 1.23 mL d) 1.22 mL - correct answer✔✔c) 1.23 mL
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answers
An ice cube melting on the counter of a warm room is an example of a:
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a) physical property b) physical change
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c) chemical property d) chemical change - correct answer✔✔B. physical change
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An eggplant has stored up energy which I have the potential to access if I eat it. This is
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a:
a) physical property b) physical change
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c) chemical property d) chemical change - correct answer✔✔c. chemical property
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Which statement concerning laboratory safety is true: ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) The maid will come to clean your workbench every afternoon. Leave it as messy as you
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
want.
b) If you want to leave early, start the lab experiment before everyone else shows up.
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c) It's fine to snack, chew gum, or have beverages in the lab classroom.
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d) If chemicals, heat, or glassware will be used in the lab, safety glasses must be worn. -
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correct answer✔✔d) If chemicals, heat, or glassware will be used in the lab, safety glasses
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must be worn ||\\//|| ||\\//||
1 gram is equal to exactly:
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) 1 milligram ||\\//|| ||\\//||
||\\//|| b) 100 milligrams ||\\//|| ||\\//||
||\\//|| c) 0.01 milligrams||\\//|| ||\\//||
, ||\\//|| d) 1000 milligrams - correct answer✔✔d) 1000 milligrams
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The weight of an object is different from the mass due to the inclusion of:
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) size ||\\//|| ||\\//||
b) gravity ||\\//|| ||\\//||
c) volume ||\\//|| ||\\//||
d) density - correct answer✔✔b) gravity
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How many significant figures will the number 0.002 have?
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a) 1 b) 2 c) 3 d) 4 - correct answer✔✔a) 1
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How many significant figures will the number 606000 have?
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a) 3 b) 2 c) 6 d) 4 - correct answer✔✔a) 3
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What is 58.00OC in terms of oF? ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) 0.22 oF b) 331 oF c) 14.44 oF d) 136.40 oF - correct answer✔✔d) 136.40 oF
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Which temperature scale has water freezing at 273? ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) Celsius b) Kelvin c) Centigrade d) Fahrenheit - correct answer✔✔b) Kelvin
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What is the density of an object weighing 4519 mg, with a volume of 0.26 L?
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a) 0.0174 g/mL b) 17,381 g/mL c) 17.38 g/mL d) 57.5 g/mL - correct answer✔✔a) 0.0174
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g/mL
If the density of an object is 3.66 g/mL, what is the volume of 4.50 grams of that object?
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a) 0.813 mL b) 16.47 mL c) 1.23 mL d) 1.22 mL - correct answer✔✔c) 1.23 mL
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