chemistry and nanotechnology

- The systematic building that organizes knowledge in the form of facts, principles, concepts, scientific theories and an organized way of search

• chemistry

• Science

• nanotechnology

• none

The glass tool used for distillation and preparation processes is:-

• round-bottom flask

• Graduated cylinder

• Pipette

• Burette

The measuring unit of matter quantity is:-

• Candela

• Mole

• Kilogram

• Ampere

GR: pH measurement is important for chemical and biochemical reactions

• Because it determines the concentration of positive hydrogen ions (H+) in solutions , which helps us know if they are alkaline, acidic or neutral.

• Because it determines the presence of positive hydrogen ions (Li+) in solutions , which helps us know if they are alkaline, acidic or neutral.

• helps to know the structure of chemical compounds

• to make the reaction goes faster

………. Studies the chemical structure of living organisms

• Biochemistry

• Physical chemistry

• Electrochemistry

• Analytical

Gr: The importance of measurement in chemistry

• it helps us evaluate situations and finding solutions

• it helps us know the kind of chemical substances

• Because it's essential for protection, it helps us know the kind and concentration of the substances we need, and it also helps us evaluate situations and finding solutions for expected errors

• none

Comparing an unknown quantity to another one of the same kind to know its size, degree or amount

• analysis

• chemical properties

• physical quantity

• Measurement

…….. are from one-dimensional nanomaterials

• Carbon nanotubes

• Thin films

• Bucky balls

• Nanoshells

0.01 nanometer is a dimension for .......

• one dimension nanomaterials

• two dimension nanomaterials

• three dimension nanomaterials

• not a nanomaterial

nanotechnology is important because:-

• It needs special devices to deal with it

• Its value ranges from 1 to 100 nm special properties

• It has special properties

• Nanomaterials industry require