What is chemistry ?
CHEMISTRY is the study of the composition, structure, properties and interactions of matter.
What career related with chemistry ?
• Biochemist
• Chemical engineer
• Cosmetic scientist
• Doctor
• Food technology
• Pharmacist
• Etc.
Scientific Method
- a systematic method used to solve problems in science
- observation - inference (smart guess) - identify problem
- hypothesis - identify variables - controlling variables
- planning an experiment
- collecting data (measurements in table or observation in sentence) - interpreting data (calculation / graphs or chart) - conclusion - write report
Laboratory experiment report
• Problem : occurring question
• Hypothesis : make a general statement
• Manipulated variable : which changes in experiment but determined by yourself
• Responding variable : which changes in experiment and it’s data or observation of experiment
• Constant variables : which constant and no changes during experiment
• Apparatus : instrument used
• Materials : chemical used (quantity)
• Procedure : passive sentences
• Data : table @ sentences
• Interpreting data / Discussion : why I get such a data ? chemistry equation, explanations
• Conclusion : hypothesis accepted rejected
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