Examination
180 minutes
Instructions:
1. Read each question carefully.
2. Answer all questions.
3. Use the provided answer sheet to mark your responses.
4. Ensure all answers are final before submitting the exam.
5. Please answer each question below and click Submit when you
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7. This is Exam which will assess your knowledge on the course
Learning Resources.
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Read All Instructions Carefully and Answer All the
Questions Correctly Good Luck: -
Which of the following is a tentative explanation for a
set of observations?
a. Law
b. Hypothesis
c. Theory
d. Phenomena
e. Prediction - Answer>> b. Hypothesis
Which of the following cannot be separated into simpler
substances by chemical means?
a. Element
b. Emulsion
c. Compound
d. Homogeneous mixture
e. Heterogeneous mixture - Answer>> a. Element
A substance in which the atoms or molecules are free
to move relative to one another. It always assumes the
shape and volume of its container. - Answer>> gas
A substance in which the atoms or molecules pack
closer than a gas, but are still able to freely move
relative to one another. It exhibits a fixed volume, but
not a fixed shape. - Answer>> liquid
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, A substance in which the atoms or molecules are fixed
at a specific position. It exhibits a fixed volume and
rigid shape. - Answer>> solid
A solid that has atoms and molecules in a repeatable
pattern. - Answer>> crystalline solid
A solid whose atoms or molecules are not arranged in a
specific pattern. - Answer>> amorphous solid
A substance does not vary its composition within the
substance nor between samples of the same
substance. - Answer>> pure substance
A physical combination of substances in which each
substance keeps its own physical and chemical
properties. - Answer>> mixture
A physical combination of substances of non-uniform
composition. - Answer>> heterogeneous mixture
A physical combination of substances of uniform
composition. - Answer>> homogeneous mixture
A pure substance that cannot be broken into
component parts. Examples include helium, nitrogen,
and oxygen. - Answer>> element
A pure substance made up of two or more elements. -
Answer>> compound
A quantitative observation. - Answer>> measurement
Any division of a quantity that may be used in a
measurement. - Answer>> unit
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