Welcome to Chemistry

Mrs. Algier

Do Now: Write down 1-3 things that you know or have heard about Chemistry

YWBAT

• State our 4 class expectations• Define Chemistry

HINT: You will need to know these for your Exit Sheet!

Class Expectations

• Be Safe• Be Respectful• Be Responsible• Follow district policies & procedures

What is Chemistry?

Study of the composition of matter and the changes it undergoes.

What is Matter?

Anything that has mass and occupies space.

MatterBookDesk

PersonRock

WaterAir

Non-MatterTime

SoundMemories

GravitySunlight

Heat

Course Overview

• Chemistry as Central Science• Electrons & Structure of Atoms• Bonding & Interactions• Reactions• Kinetic Theory• Mole & Quantifying Matter• Matter & Energy• Carbon Chemistry

Why is Chemistry Important?

•Understand world around you•Make informed decisions•Prepare for a career

A Day Without Chemistryhttps://www.youtube.com/watch?v=fMgHK5gftNw

Chemistry

Mrs. Algier

Do Now: Write down 2-3 things that you want me to know about you

YWBAT

•Identify 5 traditional areas of study in Chemistry•Identify the location and function of safety items in the classroom

The Central Science

Traditional Areas of Study in Chemistry

1.Organic Chemistry2.Inorganic Chemistry3.Biochemistry4.Analytical Chemistry5.Physical Chemistry

Organic Chemistry

• Study of chemicals that contain carbon• Examples include fuels, plastics, perfumes,

pharmaceuticals

Inorganic Chemistry

• Study of chemicals that do not contain carbon• Examples include metals, minerals, electronics

Biochemistry

• Study of processes that take place in living organisms. Examples include digestion and muscle contraction.

Analytical Chemistry

• Study of the composition of matter

Physical Chemistry

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

Careers that use Chemistry

• Research• Engineering• Medicine• Environmental• Manufacturing• Management• Teaching• Law• Safety

Activity

Scientific Method

• Logical, systematic approach to the solution of a scientific problem

Observation

Hypothesis

Experiment

Conclusion

• Uses your senses• May lead to a question

Observation

Scientific Method Vocabulary

Hypothesis: proposed explanation for an observation

Experiment: procedure used to test a hypothesis

Independent Variable: variable that you change during an experiment

Dependent Variable: variable that is observed during the experiment

Scientific Method

Big Bang Theory

http://ed.ted.com/on/LqhtPOhe

Scientific Method

Mythbusters

https://www.youtube.com/watch?v=LjbJELjLgZg

Testing Hypotheses

• For the results of an experiment to be accepted, the experiment must produce the same result no matter how many times it is repeated, or by whom.– This is why scientitst are expected to publish a

description of their procedures along with their results.

Testing Hypotheses

• Sometimes the experiment a scientist must perform to test a hypothesis is difficult or impossible.– For example, atoms and molecules, which are

some of the smallest units of matter, cannot be easily seen.

– A model is a representation of an object or event.– Chemists use models to study chemical reactions

and processes.

Developing Theories

•Once a hypothesis meets the test of repeated experimentation, it may be raised to a higher level of ideas. It may become a theory.– A theory is a well-tested explanation for a broad

set of observations.

Scientific Laws

• Scientific Law – concise statement that summarizes the results of many observations and experiments.

Endof

Chapter 1