# GCSE Physics Edexcel: Key Concepts and Units

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SI Units for Physical Quantities

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## Tags and Description

### 4 Terms

1

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).

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2

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.

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3

Conversions

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

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4

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.

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