Check box ALL of the following that would be considered an indication of a chemical change?
H.Chem- 20%- Formative Lab: Evidence of a Chemical Change

Quiz
•
Chemistry
•
10th Grade
•
Medium
Eric Peterson
Used 4+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
melting point
temperature change
formation of a gas
production of light
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following best explains the difference between exothermic and endothermic reactions?
Exothermic reactions release energy, while endothermic reactions absorb energy.
Exothermic reactions absorb energy, while endothermic reactions release energy.
Both exothermic and endothermic reactions release energy.
Both exothermic and endothermic reactions absorb energy.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the last reaction of this experiment, pieces of aluminum were placed into a solution of copper II chloride, the aluminum seemed to disappear and a brownish solid was formed. What do you think the brownish solid was, and what happened to the aluminum foil?
The brownish solid was copper, and the aluminum chemically reacted forming aluminum chloride.
The brownish solid was rust, and the aluminum foil remained unchanged.
The brownish solid was aluminum oxide, and the aluminum turned into copper.
The brownish solid was copper chloride, and the aluminum foil formed a protective layer.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sarah made her Kool-Aid, by dissolving the powder into the liquid and stirring it. Is this a chemical reaction?
Yes, because the ingredients are mixed and a new substance is formed.
No, because mixing Kool-Aid is a physical change, not a chemical change.
Yes, because the color and taste change, indicating a chemical reaction.
No, because the process is irreversible and no new substance is formed.
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Check box all of the following reactions from the lab that were considered a double replacement reaction
Reaction #1= mixing copper (II) nitrate and sodium hydroxide
Reaction #2= mixing sodium carbonate and calcium chloride
Reaction # 5= calcium chloride and water
Reaction #6= Copper (II) chloride and water
6.
DRAG AND DROP QUESTION
1 min • 1 pt
In reaction #6, aluminum pieces were placed in a copper (II) chloride solution. This was considered an (a) reaction with one of the products being (b)
7.
CLASSIFICATION QUESTION
3 mins • 1 pt
Classify each of your reactions are endothermic or exothermic
Groups:
(a) Exothermic
,
(b) Endothermic
Reaction #5
Reaction # 1
Reaction #3
Reaction #6
Reaction #4
Reaction #2
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