S1-Q1- Ch1 L1 measurement

pH value of the basic solution is ---------

• >7

• <7

• =14

• =7

Glass tool used for distillation is ------------

• volumetric flask

• rounded bottom flask

• pipette

• burette

branch of science that study the chemical reaction in the living organisms is -----------

• physical chemistry

• Biochemistry

• chemistry

• Biology

To measure the volume of the liquid which of the following tools can be used ?

(that may be more than one)

• Beaker

• burette

• Graduated Cylinder

• Volumetric flask

Using the pHmeter to compare two acidic solutions A was 2.5 and B was 5 on the pH scale , then -----------

• B is more acidic then A

• A is more acidic than B

• Both are strong acids

• Both are weak acids

Amylase enzyme work in mouth in pH 7.5 to 9.5 , So the medium of pH in the mouth is ---------

• Acidic

• Basic

• Neutral

• no correct answer

A branch science that study the concentration of sodium and potassium ions in mineral water , this science is considered ------------

• Biology

• Biochemistry

• Chemistry

• Physical chemistry

------------ are substances that have healing properties

• hormones

• Enzymes

• Medicines

• fertilizers

--------- is a method to know whether the solution is acidic or basic or neutral .

• pH scale

• pHmeter

• pH measurement

• Litmus paper

A long glass tube used in titration process is --------

• conical flask

• Burette

• pipette

• volumetric flask