1. Chemistry CP

2. Metric System Scale in NB
Multiple
Big Small 1
Base Units
(g,m,L)
0.1
Tenth
Deci
(d)
0.01
Hundredth
Centi
(c)
0.001
Thousandth
Milli
(m)
1000
Thousand
Kilo
(k)
100
Hundred
Hecto
(h) 10
Ten
Deka
(da)
Division

3. Metric System Prefixes
Metric Units
Prefix
Symbol
1,000,000,000,000
1012
tera T
1,000,000,000
109
giga G
1,000,000
106
mega M
1,000
103
kilo k
100
102
hecto h 10
deka da
0.1
10-1
deci d
0.01
10-2
centi c
0.001
10-3
milli m
10-6
micro μ
10-9
nano n
10-12
pico p

4. Metric System International System of Units (SI)
Length – meter (m)
Mass – gram (g)
Volume – liter (L or l)
Time – second (s)
Temperature – Celsius (C) or Kelvin (K)
Amount of substance – Mole (mol)
Energy- Joule (J)

5. How Do “Measure” Chemistry?
Metric System (International System of Units)
Significant Figures
Scientific Notation
Dimensional Analysis
We use these standards to compare measured quantities for accuracy.

6. Significant Figures Rules in NB
Non-zero digits are always significant.
26.38= 4 SF
2. Any zeros between two significant digits are significant. (Captured Zeros)
406= 3 SF
91,600= 3 SF
3. A final zero or trailing zeros in the decimal portion ONLY are significant.
= 3 SF
= 4 SF
We use these standards to compare measured quantities for accuracy.

7. Metric System Tools Mass (g): gram scale
Length (m): Ruler and Meter Stick
Volume (L): Graduated Cylinder

8. Metric Lab in NB Length Measurements (3 SF) Diameter Penny (cm)
Height Lab Counter (cm)
Width of Textbook (cm)
Length of Room (m)
Diameter of Penny
Height of Lab Counter
Width of Textbook
Length of Room km m cm mm
We use these standards to compare measured quantities for accuracy.

9. Metric Lab in NB 2. Mass Measurements (3 SF) Penny (g)
Graduated cylinder with 10 mL of water(g)
Empty graduated cylinder
Mass of 10mL of water (g, calculated)
Penny
Graduated Cylinder with 10mL of Water
Empty Graduated Cylinder
Mass of 10mL of Water (Calculated) g cg mg kg
We use these standards to compare measured quantities for accuracy.

10. Diameter of Double Stuff
Metric Lab in NB
3. Oreo Measurements (3 SF)
Cookie 1
Cookie 2
Average
Mass of Regular g
Diameter of Regular cm
Height of Regular
Mass of Double Stuff
Diameter of Double Stuff
Height of Double Stuff
We use these standards to compare measured quantities for accuracy.

11. Homework Finish Metric Lab Data 8-25
Check Significant Figures! 3 Significant Figures ONLY!
Quiz on 8-27