exam1 IS chapter9

Acid are......?

• bitter

• sour

• slippery

Alkalis are......?

• bitter

• sour

• slippery

Acids and alkalis can be irritant or (a)   .

If our eye is affected by acid or alkali, we should wash it with an _______ ___________ _______________.

(a)  

Red cabbage leaf can be used as natural (a)   .

natural indicators can be used as acid-alkali indicators because they contain (a)   .

(a)   is a available in solution form. the solution can be added to paper strips.

There are ________ litmus and _________ litmus.

• blue

• pink

• red

• green

acids turn blue litmus paper to_____.

alkalis turn red litmus paper to ________.

• red;blue

• blue;blue

• blue;red

• red;red

Neutral solution change the color of......?

• blue litmus paper

• red litmus paper

• both litmus paper

• none of the above