Describe the properties of the three main subatomic particles

Which sentence best describes the formation of igneous rock? a- lava on the surface dries up and makes arock b_melted rocks cools and forms crystals c_rocks under tremendous heat and pressure d_magma is melted rock underground

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.