C165 - Unit 3 Chemistry - Lessons 1-
6: Quiz- Questions and Answers
100% PASS
HYDROGEN SULFIDE (H2S), WHICH CAN BE FOUND IN CRUDE OIL,
IS TOXIC AND CORROSIVE. IT MUST BE REMOVED BEFORE THE
CRUDE CAN BE USED. CRUDE OIL IS SEPARATED INTO DIFFERENT
PRODUCTS DURING A PROCESS CALLED REFINING. HYDROGEN
SULFIDE IS A:
COMPOUND AND A MIXTURE.
MOLECULE AND AN ELEMENT.
MOLECULE AND A COMPOUND. - CORRECT ANSWER-MOLECULE
AND A COMPOUND.
EXPLANATION:
,HYDROGEN SULFIDE (H2S) HAS A FIXED RATIO OF ATOMS AND IS A
MOLECULE. IT HAS TWO TYPES OF ATOMS, SO IT IS A COMPOUND.
THE MACROSCOPIC PROPERTIES OF SOLIDS, LIQUIDS, AND GASES
RESULT FROM THE MICROSCOPIC PROPERTIES OF THE PARTICLES
OF WHICH THEY ARE COMPOSED. A SOLID HAS A FIXED SHAPE
(MEANING THAT THE SHAPE DOES NOT CHANGE) BECAUSE:
PARTICLES SLIDE PAST ONE ANOTHER.
PARTICLES VIBRATE IN PLACE.
PARTICLES MOVE RAPIDLY. - CORRECT ANSWER-PARTICLES
VIBRATE IN PLACE.
EXPLANATION:
A SOLID HAS A FIXED SHAPE (MEANING THAT THE SHAPE DOES
NOT CHANGE) BECAUSE PARTICLES VIBRATE IN PLACE.
FOSSIL FUELS ARE COMPOSED MOSTLY OF HYDROCARBONS
(MOLECULES OF HYDROGEN AND CARBON), WHICH ARE:
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law
, INORGANIC MATERIALS.
ORGANIC MATERIALS. - CORRECT ANSWER-ORGANIC MATERIALS.
EXPLANATION:
HYDROCARBONS ARE ORGANIC MOLECULES, SINCE THEY CONSIST
OF HYDROGEN AND CARBON ATOMS.
NEGATIVELY CHARGED PARTICLES THAT MOVE AROUND THE
NUCLEUS ARE CALLED:
ELECTRONS.
ELEMENTS.
COMPOUNDS.
PROTONS. - CORRECT ANSWER-ELECTRONS.
6: Quiz- Questions and Answers
100% PASS
HYDROGEN SULFIDE (H2S), WHICH CAN BE FOUND IN CRUDE OIL,
IS TOXIC AND CORROSIVE. IT MUST BE REMOVED BEFORE THE
CRUDE CAN BE USED. CRUDE OIL IS SEPARATED INTO DIFFERENT
PRODUCTS DURING A PROCESS CALLED REFINING. HYDROGEN
SULFIDE IS A:
COMPOUND AND A MIXTURE.
MOLECULE AND AN ELEMENT.
MOLECULE AND A COMPOUND. - CORRECT ANSWER-MOLECULE
AND A COMPOUND.
EXPLANATION:
,HYDROGEN SULFIDE (H2S) HAS A FIXED RATIO OF ATOMS AND IS A
MOLECULE. IT HAS TWO TYPES OF ATOMS, SO IT IS A COMPOUND.
THE MACROSCOPIC PROPERTIES OF SOLIDS, LIQUIDS, AND GASES
RESULT FROM THE MICROSCOPIC PROPERTIES OF THE PARTICLES
OF WHICH THEY ARE COMPOSED. A SOLID HAS A FIXED SHAPE
(MEANING THAT THE SHAPE DOES NOT CHANGE) BECAUSE:
PARTICLES SLIDE PAST ONE ANOTHER.
PARTICLES VIBRATE IN PLACE.
PARTICLES MOVE RAPIDLY. - CORRECT ANSWER-PARTICLES
VIBRATE IN PLACE.
EXPLANATION:
A SOLID HAS A FIXED SHAPE (MEANING THAT THE SHAPE DOES
NOT CHANGE) BECAUSE PARTICLES VIBRATE IN PLACE.
FOSSIL FUELS ARE COMPOSED MOSTLY OF HYDROCARBONS
(MOLECULES OF HYDROGEN AND CARBON), WHICH ARE:
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law
, INORGANIC MATERIALS.
ORGANIC MATERIALS. - CORRECT ANSWER-ORGANIC MATERIALS.
EXPLANATION:
HYDROCARBONS ARE ORGANIC MOLECULES, SINCE THEY CONSIST
OF HYDROGEN AND CARBON ATOMS.
NEGATIVELY CHARGED PARTICLES THAT MOVE AROUND THE
NUCLEUS ARE CALLED:
ELECTRONS.
ELEMENTS.
COMPOUNDS.
PROTONS. - CORRECT ANSWER-ELECTRONS.
