Question

Which observation most likely indicates that only a chemical change has taken place?
• The change cannot be reversed.
• States of matter changes.
• A reaction occurs.
• The shape changes.

Answer 1

1- reaction occurs
2- 2 and 4
3- only a phase change occurs
4- burning wood

i hope this helps<3

Answer 2

RADAAAAAAAAR aproves

Answer 3

Thank you it really helped................. your a goat

Answer 4

Aidencooking is right 100%