Which steps allow a user to change the column layout in the Handout Master? Click the Home tab, go to the Paragraph group, and select the columns icon to choose the number of columns.
Click the View tab, select Handout Master, and select Handout Orientation to choose the number of columns.
Click the Home tab, go to the Slides group, and choose the number of columns in the Layout drop-down list.
Click the View tab, select Handout Master, and choose the number of columns in the Slides Per Page drop-down list.

answer: when the substance contain the two parts (polar and non-polar) like soap.

explanation:

soap is produced from the basic hydrolysis of ester "saponification", it is considered as a salt of hydrocarbons. the soap molecule contains the two parts: a polar group   (-coo-na+) and a non-polar group (r-hydrocarbon part). the polar group is called the head and the tail is the non-polar group. the polar group is hydrophilic in nature (water loving) and the non-polar group is hydrophobic in nature (water repelling).the polar/non-polar nature of a substance is useful that it can dissolve the non-polar substances by the polar part and also can dissolve the polar substances by the non-polar part. it commonly used in detergents and soaps.