year 8 science

• Thermal Conductivity is how easily heat passes through a material.
• Electriced Conductivity is how electric passes through a material.
• Magnesium+Oxygen=Magnesium oxide (observations: white bright light)
• Complete the list from most reactive to least reactive:

  Potassium, Sodium, Calcium, Magnesium, Aluminium
• Copper+Magnesium nitrate= copper+magnesium nitrate
• Zinc + Carbon dioxide = Zinc carbonate
• Magnesium+iron sulphate=iron+magnesium sulphate
• The magnetic field is the strongest at the poles and weaken as you move away from it.
• This a Physics gragh.

  
• The expression for pressure is p=F/A, where F is the force and A is the area.
• If a truck is weight 500,000N and it's area is 800, it's pressure is 625000N/m2
• The density equation is mass/volume (D=m/V)