1. Chemistry
Chemistry is the study of matter (composition, structure, and properties) and the changes it undergoes.
Different types of depending on what exactly they are studying or searching for.

2. Analytical chemistry—the identification of the
Analytical chemistry—the identification of the components and composition of materials
Physical chemistry—the study of the properties and changes of matter and their relation to energy transfer
Biochemistry—the study of substances and processes occurring in living things

3. Pure chemistry—Pursuit of chemical knowledge for its own sake
Pure chemistry—Pursuit of chemical knowledge for its own sake. No practical use.
Applied chemistry—the research (or study) directed toward a practical goal and application

4. Organic chemistry—the study of most carbon- containing compounds
Inorganic chemistry—the study of non-organic substances (no Carbon)

5. Manipulated Variable – What you change during an experiment
Responding Variable – What you observe during the experiment

6. Scientific Law – A concise statement that summarizes the results of many observations and experiments.
Doesn’t explain the relationship, just describes
Scientific Theory– A well tested explanation for a broad set of observations

7. Derived Units (Combinations of two or more)
Volume = L x W x H (cm3)
Speed = Distance / time (m/s)
Area = L x W (m2)
Density = Mass/Vol (g/cm3)

8. Mass – a measure of the amount of matter in an object
(doesn’t change on position) grams, kilograms, etc.
Weight – a force that measures the pull of gravity on a mass (depends upon its location – Moon, Mars, etc.)
Metric unit is Newtons (N)

9. Temperature the average kinetic energy of all atoms and molecules
Kelvin is SI Unit K = C + 273
Absolute Zero - the lowest point on the scale
(0K = C)

10. Precision - How close a series of measurements are to one another
Accuracy – How close a measurement is to the actual or true value

11. Examples of dimensional analysis
45.3 cm to mm
13.6 g/mL to kg/L
7.5 x 10 6 cm to km

12. Examples of dimensional analysis
45.3 cm X 10 mm = 453 mm
1 cm
13.6 g X mL X 1 kg = kg/L
1 mL L g
7.5 x 10 6 cm x 1 m x 1 km = 75 km
100 cm m

13. Examples of dimensional analysis
62.3 m X 1 km = km
1000 m
58.2 m X 1 km X 60 sec = km / min
s m min
48.23 g x 1000 mg x 1 day x 1 hr x 1 min = mg/s
day g hrs 60 min 60 sec

14. Examples of dimensional analysis
3.4 cm 3 x 1 mL = 3.4 mL
1 cm3
24.5 dm 3 x cm3 = x 10 4 cm 3
1 dm3