Describe an investigation you would carry out to find out how the thickness of a layer of insulating material affects the energy transfer through it. (5 marks)

This is one type of line graph in which the independent variable is time plotted on the x axis and the dependent variable, also numerical, is plotted on the y axis.

Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air

If the area of a square has increased by a factor of 16, by how much has each side increased?