McGraw-Hill: Chemistry: Matter and Change-Ch.1

Chemistry

The study of matter and the change it undergoes

Substance/ chemical

Matter that has a definite and uniform composition

Mass

A measurement that reflects the amount of matter

Weight

The amount of matter and the Earth's gravitational pull on that matter

Model

A visual, verbal, or mathematical explanation of experimental data

Scientific Method

A systematic, scientific approach used in scientific study

Qualitative Data

Information that describes color, odor,shape, or some other physical characteristic

Quantitative Data

Tells how much, how little, how big, how tall, or how fast

Hypothesis

A tentative, testable statement or prediction about what has been observed

Experiment

A set of controlled observations that test the hypothesis

Independent Variable

The variable that you plan to change

Dependent Variable

The change in response to the independent variable

Control Group

A standard for comparison

Conclusion

A judgment based on the information obtained

Theory

An explanation of a natural phenomenon based on observations and investigations over time

Scientific Law

A relationship in nature that is supported by many experiments

Pure Research

To gain knowledge for the sake of knowledge itself

Applied Research

Research undertaken to solve a specific problem

chlorofluorocarbons

a compound used a coolant and credited for supplying chlorine that possibly is responsible for breaking down the ozone layer. Contains carbon, chlorine, and fluorine

ozone

a chemical made of 3 oxygen atoms, responsible for blocking UV radiation

organic chemistry

study of most carbon-containing chemicals

inorganic chemistry

the study of matter that doesn't contain carbon

physical chemistry

the study of behavior and changes of matter and the related energy changes

analytical chemistry

the study of components and composition of substances

biochemistry

the study of matter and processed of living organisms

environmental chemistry

the study of matter and the environment

industrial chemistry

the study of chemical processes in industry

polymer chemistry

the study of polymers and plastics

theoretical chemistry

the study of chemical interactions

thermochemistry

the study of heat involved in chemical processes