BSC1010L MIDTERM PRACTICAL (PBSC) EXAM
QUESTIONS AND ANSWERS WITH COMPLETE
SOLUTIONS GRADED A++ LATEST UPDATE
Inductive reasoning
specific to general
Deductive reasoning
general to specific
Independent variable
variable that is manipulated
Dependent variable
variable is the variable being tested and measured in a scientific experiment
Significant figures
All the digits that can be known precisely in a measurement, plus a last estimated digit
Farenheit to Celsius
(32°F − 32) × 5/9 = 0°C
Celsius to Fahrenheit
(0°C × 9/5) + 32 = 32°F
Blow out pipette
The double rings on the upper end of pipette indicate that the pipette
Delivery pipette
, the delivered quantity of liquid corresponds to the capacity printed on the pipette
Tare
a deduction from the gross weight of a substance and its container made in allowance
for the weight of the container
Balance beam
scales do not measure weight, instead they value mass
Electronic
scales determine the weight of an object
Meniscus
a lens that is convex on one side and concave on the other
Accuracy
refers to the closeness of a measured value to a standard or known value
Presicion
refers to the closeness of two or more measurements to each other
Anthocyanins
are the pigments that give red, purple, and blue plants their rich coloring
Strong acids
Example of ____ are hydrochloric acid , perchloric acid , nitric acid and sulfuric acid
Weak acids
Example of ____ are acetic acid (vinegar), lactic acid, citric acid, and phosphoric acid
Weak bases
Example of ____ are Ammonia, Diethylamine, and Methylamine
Strong bases
QUESTIONS AND ANSWERS WITH COMPLETE
SOLUTIONS GRADED A++ LATEST UPDATE
Inductive reasoning
specific to general
Deductive reasoning
general to specific
Independent variable
variable that is manipulated
Dependent variable
variable is the variable being tested and measured in a scientific experiment
Significant figures
All the digits that can be known precisely in a measurement, plus a last estimated digit
Farenheit to Celsius
(32°F − 32) × 5/9 = 0°C
Celsius to Fahrenheit
(0°C × 9/5) + 32 = 32°F
Blow out pipette
The double rings on the upper end of pipette indicate that the pipette
Delivery pipette
, the delivered quantity of liquid corresponds to the capacity printed on the pipette
Tare
a deduction from the gross weight of a substance and its container made in allowance
for the weight of the container
Balance beam
scales do not measure weight, instead they value mass
Electronic
scales determine the weight of an object
Meniscus
a lens that is convex on one side and concave on the other
Accuracy
refers to the closeness of a measured value to a standard or known value
Presicion
refers to the closeness of two or more measurements to each other
Anthocyanins
are the pigments that give red, purple, and blue plants their rich coloring
Strong acids
Example of ____ are hydrochloric acid , perchloric acid , nitric acid and sulfuric acid
Weak acids
Example of ____ are acetic acid (vinegar), lactic acid, citric acid, and phosphoric acid
Weak bases
Example of ____ are Ammonia, Diethylamine, and Methylamine
Strong bases
