Fields of Chemistry

Specializes in the study of the chemical composition of the cell parts ...........................

• Physical chemistry

• Biochemistry

• Organic chemistry

• Electrochemistry

One of the following is used to determine the mass of substances ............................

• Burette

• Round-bottom flask

• Sensitive balance

• Beaker

One of the types of glass tools used in the operations of preparation and distillation is ................

• Beaker

• Round-bottom flask

• Volumetric flask

• Pipette

The pH value of acidic solution is ...........

• pH = 7

• pH < 7

• pH > 7

• pH = 0

The comparison of an unknown amount with another amount of its kind to know the number

of times the first includes the second is ................

• Physical quantity

• Measuring unit

• Measurement process

• Metric system

One of the 1D Nano substances ..................

• Nano fibers

• Nano shells

• Nano tubes

• Bookie balls

Which of the following expresses the Nanometer?

• 1 x 10³ meters

• 1 x 10^-3 meters

• 1 x 10⁶ meters

• 1 x 10⁹ meters

The Nanometer is important in our life because ..............

• It needs special tools to see it and deal with it.

• It shows new properties that have not appeared before.

• It needs special methods to manufacture it.

• All of the above claims.

Which of the following amounts is larger?

• 10^-3

• 10^-2

• 10^-6

• 10^-8

When dividing a cube into smaller cubes ..................

• The surface area decreases and the volume decreases.

• The surface area increases and the volume decreases.

• The surface area decreases and the volume remains fixed.

• The surface area increases and the volume remains fixed.