Physical and Chemical Changes Substances can undergo various changes in properties, these changes may be classified as either physical or chemical.
(Physical and Chemical Changes Substances; can undergo; various changes in properties, these changes may be classified as either physical or chemical) (these changes; may be classified; as either physical or chemical)
Physical and Chemical Changes Substances these changes
can undergo may be classified
various changes in properties, these changes may be classified as either physical or chemical
as either physical or chemical