U1L2E3: The Study of Chemistry

The study of the composition, structure, and properties of matter and the changes it undergoes, is in charge of

• Chemistry

• Physics

• Biology

• Biochemistry

The study of carbon-containing compounds.

• Organic Chemistry

• Inorganic Chemistry

• Physical Chemistry

• Biochemistry

The study of compounds that do not contain carbon.

• Organic Chemistry

• Inorganic Chemistry

• Biochemistry

• Analytical Chemistry

The study of properties, changes in matter, and their relationship with internal energy is called

• Physical Chemistry

• Biochemistry

• Organic Chemistry

• Inorganic Chemistry

Why study chemistry?

• Chemistry explains things in the natural world.

• Many careers use chemistry.

• Informed citizens need a knowledge of chemistry.

• All the options are correct.

Compounds like lipids, proteins, carbohydrates, etc., are studied by one of the chemistry branches called ___________

• Organic chemistry

• inorganic Chemistry

• Environmental chemistry

• Biochemistry.

A gas

• has a definite shape but no definite volume
• has a definite volume but no definite shape
• has fast-moving particles

At higher temperatures

• particles in an object have less energy
• particles in an object move faster
• a gas contracts

The opposite phase of melting is 

• freezing 
• sublimation
• condensation 
• deposition 

Melting

• liquid to solid
• solid to liquid
• solid to gas
• gas to liquid