(A) Internal structural changes in matter (X)
(B) Composition of matter (X)
(C) Composition and properties of matter ()
(D) Properties of matter (X)
Answers : Composition and properties of matter
(A) Internal structural changes in matter (X)
(B) Composition of matter (X)
(C) Composition and properties of matter ()
(D) Properties of matter (X)
Answers : Composition and properties of matter
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