SI Units and Significant Figures

📋 Course Outline

1. SI System and Base Units
2. Derived Units and Volume
3. Scientific Notation and Prefixes
4. Metric Ladder Conversions
5. Measurement and Significant Figures
6. Significant-Figure Calculations

📖 1. SI System and Base Units

🔑 Key Concepts & Definitions

• International System of Units : a decimal measurement system established by the General Conference of Weights and Measures in 1960

★ Must-know

• The SI base units listed are:
  • meter for length
  • kilogram for mass
  • second for time
  • ampere for electric current
  • kelvin for temperature
  • mole for amount of substance

Further detail

• One meter equals 100 centimeters and 1,000 millimeters.

💡 Memory Hook

Length, mass, time, current, temperature, substance

📖 2. Derived Units and Volume

🔑 Key Concepts & Definitions

• Derived unit : formed by combining SI base units in a calculated quantity

★ Must-know

📐 Formula — Volume is calculated as length multiplied by width multiplied by height: $V = l \times w \times h$.

• The SI unit of volume is the cubic meter, while cubic centimeters are commonly used for solid objects and liters or milliliters for liquids.

Further detail