chapter 1 introduction to chemistry ms. wang lawndale high school
TRANSCRIPT
Chapter 1Introduction to Chemistry
Ms. Wang
Lawndale High School
Matter
• Anything that has mass and occupies space
Chemistry
• Chemistry affects all aspects of life and most natural events
• The study of the composition of matter and the changes that matter undergoes
• There are 5 main areas of study in chemistry
• study of all chemicals containing carbon• Example: Athletes inhale chemicals developed
by organic chemists to control symptoms of asthma
1. Organic Chemistry
2. Inorganic Chemistry
• study of chemicals that generally do not contain carbon
• Example: Explain how a lack of calcium can affect the growth and repair of bones
3. Biochemistry
• study of processes that take place in organisms • Example: Study how the energy used for the
contraction of muscles is produced and stored
4. Analytical Chemistry
• study that focuses on the composition of matter
• Example: develop tests to detect chemicals in the blood
5. Physical Chemistry
• study that deals with the rate of how fast matter undergoes a change
• Example: study factors that affect breathing rates during exercise
Why Study Chemistry?
• Chemistry can be useful in explaining the natural world and preparing people for career opportunities
Why Study Chemistry?
• Chemistry supplies the medicines, materials, and technology that doctors use to treat their patients
Why Study Chemistry?
• Chemists play an essential role in finding ways to conserve, produce, and store energy
Why Study Chemistry?
• Chemists help to develop more effective ways to protect crops
Why Study Chemistry?
• Chemists help to identify pollutants and prevent pollution
The Scientific Method
• A logical, systematic approach to the solution of a scientific problem
Step 1 – Make Observations
• an observation usually leads to a problem or question
Step 2 – Formulate A Hypothesis
•propose an explanation for your observation
Step 3 - Experiment
• a procedure used to test a hypothesis
Step 4 - Analyze
• Record the results of the experiment
Step 5 - Conclusion
• Compare the hypothesis to the experiment’s conclusion
HOMEWORK
Page 34 #’s 53, 54, 59-62, 67, 71