Pearson Chemistry Chapter 1

What is a manipulated variable (independent variable)?

• the variable that changes as a result of the experiment

• the variable that the scientist changes

• the evidence

• the quantitative observation

What is an example of pure research?

• creating synthetic elements to study their properities

• producing heat-resistant plastics for use in household ovens

• finding ways to slow down the rusting of iron ships

• searching for fuel other than gasoline to power cars

What is a responding variable (dependent variable)?

• a variable(s) that are kept the same, constant and unchanged

• a variable that is observed during an experiment

• a variable that responds variably

• a variable that you change during an experiment

What is chemistry?

• the study of composition of matter and changes in energy

• the study of the composition of numbers and the changes they undergo

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

• the study of matter and energy and their interactions

Organic chemistry is the study of

• chemicals that contain carbon

• organs

• chemicals not containing carbon (nonliving things)

• processes that take place in living organisms

What is/are the controlled variable(s)?

• Variable(s) that you keep the the same

• Variable(s) that you change during an experiment

• Variable that is being observed

• Variable that is in control

Physical chemistry is the study of

• the mechanism, rate and energy transfer that occurs when matter undergoes a change

• the composition of matter

• the processes that take place in living organisms

• the transfer that occurs when matter changes

Analytical Chemistry is the study of

• the mechanism, rate, and energy transfer that occurs when matter undergoes a change.

• analytical matter

• the composition of matter

• the composition of energy

Inorganic Chemistry is the study of

• chemicals that contain carbon

• processes that take place in living organisms

• chemicals that do not contain carbon (nonliving things)

• chemicals that contain carbon in nonliving things

Pure chemistry is

• the pursuit of knowledge for its own sake

• research that is directed toward a practical goal or application

• the pursuit of chemical knowledge for its own sake

• pure chemical knowledge