Acids & AlKalis Exam (1) Part A 2021.docx

**Instructions** 1\) Read the questions carefully. 2) Exactly shade the correct answer in the answer\'s sheet. 3) Compare your answers with the correct answers given to you below the answer\'s sheet. 4) Copy this test into your note book as a reference. √ x x Name: **Shade (T) if the statement i...

**Instructions** 1\) Read the questions carefully. 2) Exactly shade the correct answer in the answer\'s sheet. 3) Compare your answers with the correct answers given to you below the answer\'s sheet. 4) Copy this test into your note book as a reference. √ x x Name: **Shade (T) if the statement is true or (F) if it is false on the shading sheet.** 1 Alkali has a sour test. ( ) 2 The term \"acid\" comes is originally Latin and means sour. ( ) 3 Metal and rocks can be corroded or eaten away by Alkalis. ( ) 4 A base is a substance that reacts with acids to produce water. ( ) 5 Bases that dissolve in water are called ashes of the plant according to the Arabic language. ( ) 6 Alkali means the ashes of the plant. ( ) 7 Acids can be neutralized by alkalis. ( ) 8 Litmus paper is a fruitful dye that used to test the Alkalinity of solution. ( ) 9 Litmus dye is green. ( ) 10 If the gray litmus paper is soaked in acidity of solution, it will turn red. ( ) 11 If a red litmus paper is soaked in Alkalinity solution, it will turn blue. ( ) 12 The pH scale is used to measure the strength of the acidity only. ( ) 13 The pH scale measures the concertation of the hydrogen ions on scale of 1 to 14. ( ) 14 Low numbers on the litmus paper shows high acidity. ( ) 15 9.5 is the value of the soup on the scale of the pH. ( ) 16 The distilled water is a neutral matter according to pH value. ( ) 17 7 is the value for the acidic water. ( ) 18 Unlike the pH scale, the litmus paper is a meter or an indicator used to measure pH values. ( ) 19 The acidic rain is produced by the reaction between gases of the burning oil or coal or gases of the cars react with water. ( ) 20 The value of the acid rain can be (2.5). ( ) Answer\'s Sheet ----------------- ------ ------- ---- ------ ------- ---- ------ ------- ---- ------ ------- Q True False Q True False Q True False Q True False 1 6 11 16 2 7 12 17 3 8 13 18 4 9 14 19 5 10 15 20