What is Chemistry?CHAPTER 1

MRS. FARIA

Chapter Summary – Vocabulary Terms

Matter Technology Systematic approach Chemistry Mass Weight Model

Scientific method Qualitative data Quantitative data Hypothesis Experiment Independent variable Dependent variable

Control Conclusion Theory Scientific law

Do Now: In your own words, what is chemistry?

Chemistry – study of matter and the changes that it undergoes.

Chemical – aka as a substance Matter that has a definite and uniform composition

Team Building Activities

Like all science, chemistry very much revolves around the

relationships with your peers and collaboration.

In the next two activities, you will need to learn to work together

as a team to accomplish the task.

Activity 1

Materials:

3 or 4 pieces of string

1 rubber band

6 Styrofoam cups

Instructions:

Create a pyramid tower with the cups.

You CANNOT touch the cups with anything but the rubber band or the string.

Activity 2 – What is chemistry?

Each member will have one colored pencil.

In each group, members will take turns to draw a picture that realistically depicts chemistry. Each member must have a turn and

can only use their own color pencil. No talking is allowed during the

activity.

Do Now:

Start working on Study Guide 2.1

What is a chemical? (Demo)

Chemical – matter that has a definite and uniform composition.

What is chemistry?

Chemistry is the study of substances in terms of

Composition – what is it made of?

Structure – How is it put together?

Properties – What characteristics does it have?

Reactions - How does it behave with other substances?

Chemistry and MatterBranch Emphasis Examples

Organic Chemistry Most carbon containing chemicals Pharmaceuticals, plastics

Inorganic Chemistry Matter that does not contain carbon

Minerals, metals and nonmetals, semiconductors

Physical Chemistry Behavior and changes of matter and the related energy changes

Reaction rates, reaction mechanisms

Analytical Chemistry Components and composition of substances

Food nutrients, quality control

Biochemistry Matter and processes of living organisms

Metabolism, fermentation

Environmental Chemistry Matter and the environment Pollution, biochemical cycles

Industrial Chemistry Chemical processes in industry Paints, coatings

Polymer Chemistry Polymers and plastics Textiles, coatings, plastics

Theoretical Chemistry Chemical interactions Many areas of emphasis

Thermochemistry Heat involved in chemical processes

Heat of reaction

Chemistry & Matter

Matter – anything that has a mass (made up of atoms) and takes up space (volume)

Mass vs. weight Mass – measurement that reflects the amount of

matter Measured in grams, kilograms.

Weight – a measurement not only of the amount of matter but also the effect of Earth’s gravitational pull on that matter. Measured in Newtons.

Model

Visual, verbal, or mathematical explanation of experimental data.

Do Now:

Write down the steps of the scientific method.

Scientific Method

Problem/Question Gather information Hypothesis – Experiment –

Independent variable

Dependent variable

Control

Collect Data Qualitative data –

Quantitative data -

Analyze data Model -

Conclusions Scientific theory

Scientific Law

Theory vs. Scientific Law

Theory – hypothesis supported by many experiments Explanation

Scientific law – summary of accepted facts of nature Observation

Chapter Summary – Main Ideas

Chemistry is the study of everything around us. Branches of chemistry involve the study of

different kinds of matter. Scientists use the scientific method to

systematically pose and test solutions to questions and assess the results of the tests.

Some scientific advantages result in the development of technology that can improve our lives and the world around us.

Review Questions

Which of the following releases matter?

A. Engaging a car exhaust system

B. Picking up iron filings with a magnet

C. Turbines spinning in a power plant

D. Turning on an electric hot plate

Review Questions

The general term for a systematic approach used in scientific study is ________.

A. the scientific method C.

quantitative analysis

B. qualitative analysis D. the scientific controversy

Review Questions

When an explanation has been supported by many experiments. The explanation is a ___________.

A.hypothesis

B.theory

C.law

D.model