Chapter 1 - Introduction to Chemistry; Introduction to Active Learning

Which of the following is a possible explanation for a set of observations?

A hypothesis

Which one of the following household chores does not involve a chemical process?

Sweeping the floor

Which one of the following is not a hypothesis?

A car weighs 3,756 lb.

Which of the following is a probable explanation for a set of observations or a set of tested hypotheses?

A theory

When a compound called an acid is mixed with a compound called a base, a reaction always occurs. Thus, the statement, "acids react with bases" is an example of a scientific

Law

A quantitative observation is known as

Measurement

"Matter is composed of atoms" is an example of a scientific

Model

What do we call a test to gather more information to support or discredit a hypothesis?

an experiment

Which of the following is another name for a scientific test?

an experiment

Which is not considered a subdivision of chemistry?

astronomy

A quantitative observation:

contains a number and a unit.

Chemistry is a(n) _______ science.

experimental

Generally, observed behavior that can be formulated into a statement, sometimes mathematical in nature, is called a(n):

natural law.

The statement "The total mass of materials is not affected by a chemical change in those materials" is called a(n):

natural law.

What did Lavoisier use to test the phlogiston theory?

phosphorus

"What goes up must come down" is an example of a scientific

Law

T/F? A chemical theory that has been known for a long time becomes a law.

False

Chlorofluorocarbons (CFCs) are a type of industrial chemical. It was noted in the 1980s that as the production of CFCs increased, damage to the earth's ozone layer increased. With this information, classify the statement, "CFCs damage the ozone layer."

Hypothosis

The scientific approach of critical thinking is useful in resolving many of our everyday problems.

In proper order, critical thinking involves: observation, hypothesis, and experiment.

T/F? Chemistry is a science that is useful to everyone since it is used in many different occupational areas.

True

Strawberries taste sweet is

a qualitative observation