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# P1-P3

### Matter (P1), Forces (P2), Electricity & Magnesium (P3)

Term | Definition |
---|---|

What is the size of an atom? | -15 1 X 10 M |

What is the diameter of an atom? | -10 1 X 10 M |

Density (Formula) | Mass Volume |

Density is | Mass per unit Volume |

Density of a... | Substance varies with sate but Mass doesn't |

Specific Heat Capacity (formula) | Change in Thermal Specific Heat Change in = Mass(kg) X Capacity (J/kgC) X Temp Energy (J) |

You need to Put in Energy to.... | Break Inter-molecular Bonds |

Specific Latent Heat is.... | Energy needed to Change State |

Specific Latent Heat (Formula) | Thermal Energy Specific Latent = Mass(kg) X Heat (J/kgC) for a Change in State |

Colliding Gas particles... | Creates Pressure |

Change in Temperature..... | Changes the Pressure |

Speed, Distance & Time (Formula) | Distance = Speed (m/s) X Time (s) |

Acceleration (Formula) | 2 Change in Velocity(m/s) Acceleration(m/s ) = Time (s) |

Acceleration is.... | Rate of change of Velocity |

Uniform Acceleration (Formula) | (final velocity2) - (initial velocity)2 = 2 X acceleration X distance (m/s)2 (m/s)2 (m/s2) (m) |

Distance Time Graphs..... | Tell you how far something has travelled |

Velocity Time Graphs... | Used to find Acceleration |

Forces can be.. | Contact or non-Contact |

Resultant Force... | Overall force on a point or object |

Free Body Force Diagrams show... | All the Forces Acting on the Body |

A Resultant Force of 0 mean.. | All the Forces are Balanced |

A non-0 Resultant Force means... | The Forces are Unbalanced |

Equilibrium | All the Forces on it are Balanced |

Newton's First Law says.. | An object will remain stationary or at a constant velocity unless acted upon by an external force |

Newton's Second Law say... | The force acting on an object is equal to its rate of change of momentum |

Force (Formula) | Mass (KG) X Acceleration (m/s2) |