GCSE Physics Edexcel: Key Concepts and Units

SI Units for Physical Quantities

SI Units for Physical Quantities

Standard units used in science for measurements, including meter (m), kilogram (kg), second (s), ampere (A), kelvin (K), mole (mol), and candela (cd).

Multiples and Sub-Multiples of Units

Prefixes like Giga (G), Mega (M), Kilo (k), Centi (c), Milli (m), Micro (μ), and Nano (n) used for multiples and sub-multiples of units.

Conversions

Process of converting units, such as hours to seconds (1 hour = 3600 seconds), to facilitate calculations and comparisons.

Significant Figures and Standard Form

Concepts involving significant figures to represent precision and standard form to express numbers as a product of a number between 1 and 10 and a power of 10.