CHEM 103 MODULE 1 TO 6 EXAM ACTUAL TEST PAPER QUESTIONS CORRECT ANSWERS GRADED A PLUS

CHEM 103 MODULE 1 TO 6 EXAM ACTUAL TEST PAPER QUESTIONS CORRECT ANSWERS
GRADED A PLUS
Chem 103 Module 1 to 6 Exam answers Portage
learning 2026/2027 Questions and Answers Verified
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Question:
What are the three domains of chemistry?

Answer:
macroscopic, microscopic, symbolic



Question:
macroscopic domain

Answer:
large enough to be sensed directly by human sight or touch



Question:
microscopic domain

Answer:
realm of things that are too small to be sensed directly (can be seen using microscope)



Question:
symbolic domain

Answer:
Language of chemistry: chemical symbols, formulas, calculations etc., that help chemists
communicate about properties that cannot be observed.



Question:

,Which domain of chemistry is H20?

Answer:
symbolic domain



Question:
Which domain of chemistry is a lead pencil?

Answer:
macroscopic domain



Question:
Which domain of chemistry is a water bottle?

Answer:
macroscopic domain



Question:
Which domain of chemistry is a carbon atom?

Answer:
microscopic domain



Question:
Which domain of chemistry is Cu(s)?

Answer:
symbolic domain



Question:
Which domain of chemistry is an electron?

, Answer:
microscopic domain



Question:
What are the three basic parts of a measurement?

Answer:
a number, a unit, and indication of uncertainty



Question:
What is the difference between an exact number and an uncertain measurement?

Answer:
Exact number- derived from counting Uncertain number- derived from a measurement other than
counting and subject uncertainty due to limitations of the measurement process used



Question:
What are the 3 states of matter commonly found on earth?

Answer:
Solid- fixed shape and volume Liquid- takes the shape of the container, has a fixed volume, for
horizontal surface Gas- takes shape and volume of container



Question:
Explain the law of the conservation of matter

Answer:
The amount of matter involved in chemical or physical change must remain constant



Question:
Who used a cathode ray tube to calculate the mass-to-charge ratio of cathode ray particles?