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CHEM 1100 MIDTERM PRACTICE TEST QUESTIONS WITH CORRECT DETAILED ANSWERS.
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CHEM 1100 MIDTERM PRACTICE TEST QUESTIONS WITH CORRECT DETAILED ANSWERS.
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CHEM 1100 MIDTERM PRACTICE TESTQUESTIONS WITH CORRECT DETAILED
ANSWERS.
The amount of space occupied by a substance is its - ANSWER- volume
Which of the following is a measurement of mass in the metric system - ANSWER-
kilogram
A value of 36 mL is a measure of - ANSWER- volume
The measurement of 0.000004 3m, expressed correctly using scientific notation is -
ANSWER- 4.3 x 10 -6 m
The number of significant figures in the measurement 45.030mm is - ANSWER- five
Which of the following examples illustrates a number that is correctly rounded to three
significant figures? - ANSWER- 20.0332 Grams to 20.0 grams
Which of the following is a homogeneous mixture? - ANSWER- tea
Which of the following is a heterogeneous mixture - ANSWER- noodle soup
If the temperature is 20. celsius what is the corresponding temperature on the
fahrenheit scale? - ANSWER- 68 F
Symbol of Silver - ANSWER- Ag
Which of the following is a characteristic of the modern periodic table? - ANSWER- The
elements in each group have similar chemical properties.
Which of the following descriptions of a subatomic particle is correct - ANSWER- A
proton has a positive charge and a mass of approximately 1 amu
What is the mass number of an atom of potassium that has 20 neutrons? - ANSWER-
39
Consider an isotope of sodium with a mass number of 25. The number of neutrons in
this isotope of sodium is - ANSWER- 14
A sample of chlorine has two naturally occurring isotopes. The isotopes Cl-35 makes up
75.8 percent of the sample, and the isotope Cl-37 makes up 24.3 percent of the sample.
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