Chemistry Unit 1 Review

What is chemistry?

• The study of the composition of matter and the changes it undergoes.

• The study of living organisms.

• The study of matter, energy, space, and time.

• The study of the interactions between humans and the environment.

Select the main branches of chemistry.

• organic chemistry, inorganic chemistry, physical chemistry, analytical chemistry, and biochemistry
• inorganic chemistry, physical chemistry, analytical chemistry, and biochemistry
• organic chemistry, physical chemistry, analytical chemistry, and biochemistry
• organic chemistry, inorganic chemistry, analytical chemistry, and biochemistry
• organic chemistry, inorganic chemistry, physical chemistry, and biochemistry

Our major source of energy today is

• wind energy
• solar power
• nuclear power
• fossil fuels

Chemists contribute the to the growth of food by all of the following except

• developing new fertilizers and pesticides
• participating in the physical process of planting and harvesting crops
• analyzing soil composition
• studying the effects of climate change on crops

Improved rubber compounds for tires might be developed by

• an inorganic chemist

• a biochemist

• an organic chemist

• a physical chemist

The scientific method is

• a random and haphazard approach to solving problems and answering questions in science.
• a religious belief system used to explain natural phenomena.
• a method used only in social sciences and not applicable to natural sciences.
• a systematic and logical approach to solving problems and answering questions in science

A scientific theory is a broad and extensively test explanation of why experiments give certain results, while a ____ is a concise statement that summarizes the results of many observations and experiments using simple mathematical equations.

• conclusion

• hypothesis

• law

• rule

Which of the following are NOT physical properties of matter?

• Melting point
• Density
• Boiling point
• Growing

Which of the following sets of physical properties are extensive properties?

• color, malleability, odor

• melting point, conductivity, solubility

• volume, mass, shape

• luster, hardness, density

Liquid substances have

• a definite shape and volume

• a definite volume, but indefinite shape; they flow

• a shape and volume equal to that of their containers

• a high amount of energy