Characteristics Of Chemical Reactions Pretest

Quiz
•
Science
•
6th Grade
•
Medium
+1
Standards-aligned
Katherine Sawyer
Used 182+ times
FREE Resource
13 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sodium and Chlorine react to form salt. At an atomic level, how do we know that a chemical reaction has occurred?
Salt molecules are negatively charged.
For every two sodium atoms, two chlorine atoms are needed.
The sodium and chlorine atoms rearrange to form a new molecule.
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which statement is true?
Combining Substance A and B resulted in a chemical reaction because the temperature did NOT change.
Combining Substance C and D resulted in a chemical reaction because the temperature did NOT change.
Combining Substance A and B resulted in a chemical reaction because a gas was formed.
Neither combinations resulted in a chemical reaction because none of them changed color.
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which statement is TRUE?
Cutting paper is an example of a chemical reaction because a new substance is formed and the process cannot be undone.
Burning paper is an example of a chemical reaction because a new substance is formed and the process cannot be undone.
Freezing water is an example of a chemical reaction because a new substance is formed and the process cannot be undone.
Tags
NGSS.MS-PS1-2
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A student see's bubbles begin to form within a mixture. the student believes this is a good sign that a chemical reaction has taken place. Explain why the bubbles are good evidence of a chemical reaction.
Bubbles are cool.
Bubbles are evidence of a chemical reaction because they indicate the presence of air.
Bubbles are REALLY cool
Bubbles are evidence of a chemical reaction because they indicate that a new substance (gas) has formed.
Tags
NGSS.MS-PS1-2
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Chemical reaction or not?
yes
no
Tags
NGSS.MS-PS1-2
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Is dissolving crystals/powder evidence of a chemical reaction?
yes
no
Tags
NGSS.MS-PS1-2
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Hint: gas bubbles are being produced. Chemical reaction or not?
yes
no
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
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