Igniting a mixture of Fe2O3 and Al with a magnesium ribbon fuse produces molten iron and aluminum oxide in an impressive exothermic reaction. Pick the beverage can up to show the students. Place the ...

Chemical reactions make new chemicals. Atoms are rearranged during a chemical reaction, but the number of atoms does not change. A catalyst is a substance that speeds up a chemical reaction.

1 Write the balanced chemical equation for the reaction ... by bond formation than was needed to break the bonds. The reaction is exothermic. If the answer is positive, the reaction is endothermic.