Asked by shoto aizawa
                Which observation most likely indicates that only a chemical change has taken place?(1 point)
Responses
States of matter changes.
States of matter changes.
A reaction occurs.
A reaction occurs.
The change cannot be reversed.
The change cannot be reversed.
The shape changes.
            
        Responses
States of matter changes.
States of matter changes.
A reaction occurs.
A reaction occurs.
The change cannot be reversed.
The change cannot be reversed.
The shape changes.
Answers
                    Answered by
            shoto aizawa
            
    Use the table of observed changes to answer the question.
Change # Reacts with another substance? Temperature change? Gas, sound, or light produced? New substance formed?
1 yes yes yes yes
2 no yes yes no
3 yes yes yes yes
4 no no no no
Which changes shown in the table are physical changes?
(1 point)
Responses
2 and 4
2 and 4
1 and 2
1 and 2
1 and 4
1 and 4
2 and 3
    
Change # Reacts with another substance? Temperature change? Gas, sound, or light produced? New substance formed?
1 yes yes yes yes
2 no yes yes no
3 yes yes yes yes
4 no no no no
Which changes shown in the table are physical changes?
(1 point)
Responses
2 and 4
2 and 4
1 and 2
1 and 2
1 and 4
1 and 4
2 and 3
                    Answered by
            shoto aizawa
            
    Why is it a physical change to freeze water?(1 point)
Responses
Only a phase change occurs.
Only a phase change occurs.
A temperature change occurs.
A temperature change occurs.
Heat is released during the process.
Heat is released during the process.
The new and original substances are different.
    
Responses
Only a phase change occurs.
Only a phase change occurs.
A temperature change occurs.
A temperature change occurs.
Heat is released during the process.
Heat is released during the process.
The new and original substances are different.
                    Answered by
            shoto aizawa
            
    Question
Which option is an example of a chemical change?(1 point)
Responses
stretching a rubber band
stretching a rubber band
folding paper
folding paper
chopping vegetables
chopping vegetables
burning wood
    
Which option is an example of a chemical change?(1 point)
Responses
stretching a rubber band
stretching a rubber band
folding paper
folding paper
chopping vegetables
chopping vegetables
burning wood
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