Chapter 1

1
Chapter 1 Intro to Chemistry
2
Chemistry and Matter

• Chemistry (defn) study of matter and changes it
  undergoes
• Chemistry is central to ALL sciences
• Ex biology, earth science, astronomy, etc.

3
Matter

• Defn anything that has mass and takes up space
• Can you always see matter?
• Can you always FEEL matter?
• Is everything made of matter?

NO
UH UH
NOPE
4
Mass

• Defn amount of matter something has
• Does everything have mass?

5
Weight

• Defn measure of earths gravitational
  attraction for matter
• What weighs more pound of feathers or pound of
  bricks?
• Is the volume equal?
• Are the overall masses equal?

6
Scientific Method

• Defn systematic approach to solving problems
• Where do questions come from?

7
Parts of Scientific Method

• Observation act of gathering information, seen
  directly
• a) qualitative data observation made w/o
  measurement (use 5 senses)
• b) quantitative data made w/ measurement
• 4.4 lbs, 529 cm, 430, 1000 mL

8
Parts of Scientific Method

• 2. Hypothesis testable explanation for
  observations ask questions
• Where do hypotheses come from?
• OBSERVATIONS

9
Is Tom a pimp?
Tom is a true Mack Daddy. Pimp Tom pimp.
10
Parts of Scientific Method

• 3. Experiment way of testing hypothesis
• a) variable factors that change
• i) independent variable variable
  experimenter changes
• ii) dependent variable depends on
  independent variable

STIMULUS
RESPONSE
11
Parts of Scientific Method

• b) control standard for comparison stays
  constant
• 4. Conclusion proves/disproves hypothesis
• 5. Theory explanation supported by many
  experiments

12
Parts of Scientific Method

• 6. Scientific Law relationship in nature
  supported by many experiments