1.01 use the following units: kilogram (kg), metre (m), metre/second (m/s), metre/second^2(m/s^2), newton (N), second (s) and newton/kilogram(N/kg)

Make sure you are familiar with units for 

Mass: kilogram (kg)

Distance: metre (m)

Speed: metre per second (m/s)

Acceleration: metre per second squared (m/s^2)

Force: newton (N)

Time: second (s) 

Gravity: newton/kilogram (N/kg) 

 

1.02 use the following units: Newton metre (Nm), kilogram metre/second (kgm/s)

the units of:

moment: Newton metre (Nm)

momentum: kilogram metre/second (kgm/s) 

 

1.11 describe the effects of forces between bodies such as changes in speed, shape or direction

Forces can act on a body to change the velocity, so the speed, direction or both.

Or forces can change the shape of a body, stretching it squishing it or twisting it. 

1.13 understand how vector quantities differ from scalar quantities

scalars are quantities with only magnitude (size)

vectors are quantities with magnitude (size) and direction 

1.14 understand that force is a vector quantity

Force has a magnitude measured in (N) but it also has a direction, a push or a pull, up, down, left or right. So force is a vector.  

1.25 know and use the relationship between momentum, mass and velocity: P=m x v

momentum (kgm/s)= mass (kg) x velocity (m/s) 

1.26 use the idea of momentum to explain safety features

To reduce the force experienced by the passenger you need to extend the time for a passenger to stop in a collision. As force is the change in momentum divided by time.  

1.27 use the conservation of momentum to calculate the mass, velocity or momentum of objects

1.28 use the relationship between force, change in momentum and time take

Force is the rate of change of momentum. So Force (N) = change in momentum (kgm/s) / time (s)  

1.29 demonstrate an understanding of Newton’s third law

Every action has an equal and opposite reaction. 

Book pushes down on table, table pushes up on book. So book doesn’t accelerate. 

Table pushes down on floor, floor pushes up on table. So table doesn’t accelerate. 

1.30 know and use the relationship between the moment of a force and its perpendicular distance from the pivot

moment = force x perpendicular distance from the pivot

1.32 use the principle of moments for a simple system of parallel forces acting in one plane

The principle of moments states that when the clockwise moments are equal to the anticlockwise moments a body will be in equilibrium.

1.33 understand how the upward forces on a light beam, supported at its ends, vary with the position of a heavy object placed on the beam

when moments are taken from the right hand side as the block is a greater distance the force from the left hand pivot must be bigger to counteract it. The opposite is true for the left hand side. 

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     Terminology

     Skills and equipment

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Section 1: Principles of chemistry

      a) States of matter

      b) Atoms

      c) Atomic structure

     d) Relative formula masses and molar volumes of gases

     e) Chemical formulae and chemical equations

     f) Ionic compounds

     g) Covalent substances

     h) Metallic crystals

     i) Electrolysis

 Section 2: Chemistry of the elements

     a) The Periodic Table

     b) Group 1 elements: lithium, sodium and potassium

     c) Group 7 elements: chlorine, bromine and iodine

     d) Oxygen and oxides

     e) Hydrogen and water

     f) Reactivity series

     g) Tests for ions and gases

Section 3: Organic chemistry

     a) Introduction

     b) Alkanes

     c) Alkenes

     d) Ethanol

Section 4: Physical chemistry

     a) Acids, alkalis and salts

     b) Energetics

     c) Rates of reaction

     d) Equilibria

Section 5: Chemistry in industry

     a) Extraction and uses of metals

     b) Crude oil

     c) Synthetic polymers

     d) The industrial manufacture of chemicals

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