CHEM Lecture 1 CH1

What four elements did the Greeks believe in?

Air, Fire, Water, Earth.

Building blocks to all other substances

The methodical exploration of nature followed by a logical explanation of the observations

Science

Systematic investigation of nature and requires proposing an explanation for the results of an experiment in the form of a general principle

Scientific method

Initial, tentative proposal of a scientific principle

Hypothesis

Involves exploring nature and testing hypotheses according to a planned strategy to make observations under controlled conditions

Experiment

What is the difference between a hypothesis and an experiment?

A hypothesis is testable

An experiment is a test

A model that explains the behavior of nature

Theory

A model that does not explain behavior but rather states a measurable relationship

A natural law

____ describes nature, while ____ explains.

_____ is what, and ___ is why

Law; theory

A science that studies the composition of matter and its properties

Chemistry

Define the 4 branches of chemistry of organic, inorganic, biochemistry, and green chemistry.

1. Organic chemistry - study of substances containing carbon

2. Inorganic chemistry - study of all other substances that don’t contain carbon

3. Biochemistry - the study of substances derived from plans and animals

4. Green chemistry - design of chemical processes that reduce waste and hazardous substances