7. which of the following does NOT indicate that a chemical change may have taken place?
A. fracture formation
B. gas production
C. precipitate formation
D. energy transfer

8. what happens to matter during a chemical reaction?
A. matter is neither destroyed or created.
B. some matter is destroyed
C. some matter is created
D. some matter is destroyed and some is created.

Question

7. which of the following does NOT indicate that a chemical change may have taken place?
A. fracture formation
B. gas production
C. precipitate formation 
D. energy transfer

8. what happens to matter during a chemical reaction?
A. matter is neither destroyed or created.
B. some matter is destroyed 
C. some matter is created
D. some matter is destroyed and some is created.

anonymous · Answer

Both A, what grade is this may i ask?

anonymous · Answer

10th

anonymous · Answer

Really?

anonymous · Answer

Did you just start taking biology?

anonymous · Answer

heres the answers to your questions: http://quizlet.com/13787324/chemistry-unit-1-matter-flash-cards/