C165 - Unit 3 Chemistry - Lessons 7-
19: Quiz Questions and Answers
100% PASS
WHEN NACL FORMS, EACH NA ATOM TRANSFERS AN ELECTRON TO
A CL ATOM. WHEN THIS OCCURS, THE NA AND CL ATOMS BECOME
IONS. EACH NA ION HAS A CHARGE OF:
-2
+2
-1
0
+1 - CORRECT ANSWER-+1
EXPLANATION:
EACH SODIUM ATOM LOSES ONE ELECTRON, PRODUCING AN
OVERALL CHARGE OF +1.
INSTRUCTIONS: USE THE FOLLOWING SCENARIO FOR QUESTIONS 2
AND 3.
,SCENARIO: THE CHEF PLACES COLD WATER IN A POT, PLACES THE
POT ON THE STOVE, AND MONITORS ITS TEMPERATURE AS TIME
PASSES. WHICH OF THESE BEST DESCRIBES THE CHANGES THE
CHEF SEES OCCURRING AT DIFFERENT STAGES OF HEATING THE
POT OF WATER?
BEFORE THE WATER BEGINS TO BOIL, THERMAL ENERGY _____.
REMAINS THE SAME.
INCREASES.
DECREASES. - CORRECT ANSWER-INCREASES.
EXPLANATION:
THERMAL ENERGY INCREASES AS THE WATER GETS HOTTER.
WHILE THE WATER BOILS, THE AVERAGE KINETIC ENERGY OF
THE WATER MOLECULES ______
REMAINS THE SAME.
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law
, DECREASES.
INCREASES. - CORRECT ANSWER-REMAINS THE SAME.
EXPLANATION:
THE ADDED ENERGY IS GOING INTO CHANGING THE WATER
FROM A LIQUID TO A GAS BY BREAKING THE ATTACHMENTS OF
THE WATER MOLECULES TO EACH OTHER, RATHER THAN INTO
RAISING ITS TEMPERATURE OR AVERAGE KINETIC ENERGY PER
MOLECULE.
IF A LIQUID EVAPORATES BELOW ITS BOILING TEMPERATURE TO
CHANGE INTO A GAS BY EVAPORATION, IT _____ THERMAL
ENERGY FROM ITS SURROUNDINGS.
RELEASES
NEITHER ABSORBS NOR RELEASES
ABSORBS - CORRECT ANSWER-ABSORBS
EXPLANATION:
19: Quiz Questions and Answers
100% PASS
WHEN NACL FORMS, EACH NA ATOM TRANSFERS AN ELECTRON TO
A CL ATOM. WHEN THIS OCCURS, THE NA AND CL ATOMS BECOME
IONS. EACH NA ION HAS A CHARGE OF:
-2
+2
-1
0
+1 - CORRECT ANSWER-+1
EXPLANATION:
EACH SODIUM ATOM LOSES ONE ELECTRON, PRODUCING AN
OVERALL CHARGE OF +1.
INSTRUCTIONS: USE THE FOLLOWING SCENARIO FOR QUESTIONS 2
AND 3.
,SCENARIO: THE CHEF PLACES COLD WATER IN A POT, PLACES THE
POT ON THE STOVE, AND MONITORS ITS TEMPERATURE AS TIME
PASSES. WHICH OF THESE BEST DESCRIBES THE CHANGES THE
CHEF SEES OCCURRING AT DIFFERENT STAGES OF HEATING THE
POT OF WATER?
BEFORE THE WATER BEGINS TO BOIL, THERMAL ENERGY _____.
REMAINS THE SAME.
INCREASES.
DECREASES. - CORRECT ANSWER-INCREASES.
EXPLANATION:
THERMAL ENERGY INCREASES AS THE WATER GETS HOTTER.
WHILE THE WATER BOILS, THE AVERAGE KINETIC ENERGY OF
THE WATER MOLECULES ______
REMAINS THE SAME.
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law
, DECREASES.
INCREASES. - CORRECT ANSWER-REMAINS THE SAME.
EXPLANATION:
THE ADDED ENERGY IS GOING INTO CHANGING THE WATER
FROM A LIQUID TO A GAS BY BREAKING THE ATTACHMENTS OF
THE WATER MOLECULES TO EACH OTHER, RATHER THAN INTO
RAISING ITS TEMPERATURE OR AVERAGE KINETIC ENERGY PER
MOLECULE.
IF A LIQUID EVAPORATES BELOW ITS BOILING TEMPERATURE TO
CHANGE INTO A GAS BY EVAPORATION, IT _____ THERMAL
ENERGY FROM ITS SURROUNDINGS.
RELEASES
NEITHER ABSORBS NOR RELEASES
ABSORBS - CORRECT ANSWER-ABSORBS
EXPLANATION:
