Post on 14-Jan-2016
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
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