Physics P1 Ocr Gateway B (1), Exam Questions and answers, Rated A+. VERIFIED.

Physics P1 Ocr Gateway B (1), Exam Questions and answers, Rated A+. VERIFIED. What is heat a measure of?--Energy (J) What happens when a substance is heated?--The particles gain kinetic energy and they move/vibrate faster What scale is heat measured on and why?--An absolute scale because it cannot go lower than 0 What is temperature a measure of?--Hotness and the average kinetic energy of particles in a substance What is specific heat capacity? What is the equation?--The amount of energy needed to raise the temperature of a 1kg substance by 1 degree. Energy = mass x shc x temperature change How do substances boil?--Heat energy makes particles vibrate/move faster until the forces of attraction are overcome and big bubbles of gas form How do substances melt?--Heat energy makes particles vibrate/move faster until the forces of attraction are overcome and the particles begin to move around What is happening when there are flat spots on heating graphs?--The temperature is not being changed because the energy is being used to break intermolecular bonds between particles to change the state of the substance