In the reaction at blood falls, iron and oxygen combine to form iron oxide, which is called rust (water is also present). the reactants are , a] oxygen and iron oxide b] iron ad iron oxide c] oxygen and iron and the product is a] iron b] oxygen c] iron oxide. i need answers to boh blanks .

Reactant is a substance that is in a chemical reaction. Product is a substance that is produced by the chemical reaction. A chemical change that you are familiar with isrust. In this chemical reaction, oxygen and iron, which are the reactants,combine to form a product called iron oxide(rust)
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1) when you rub your hands together quickly, the kinetic energy is converted to mechanical energy.2) thermal energy from the sun travels to earth as infrared waves.3) energy is transferred through the matter of space by electromagnetic waves. 4) when a match is burned, chemical potential energy is converted to thermal and radiant energy. 5) seismicwaves are caused by back and forth movement , or vibration, of an object. 6) mechanicalenergy in an engine changes thermal energy into kinetic energy to make a car move.