1) Reversible Changes-A change that can be undone or reversed, allowing the substance to return to its original state. 2) Melting Ice: Ice melts into water, but freezing the water reforms ice. 3) Boiling Water: Water turns to steam, but condensing the steam returns liquid water. 4) Folding Paper: Folding and unfolding paper restores its original shape. 5) Dissolving sugar in water and then evaporating the water to get the sugar back.

bởi

Bảng xếp hạng

Phong cách trực quan

Tùy chọn

Chuyển đổi mẫu

Bạn có muốn khôi phục tự động lưu: không?