When fireworks explode, they give off light and heat. What forms of evidence
suggest a chemical change has taken
place?

Used the balanced equation 2h2+ o2 - -> 2h2o. if you have 7.2 grams of o2 , how many grams of h2o can you produce ?

In the particles are arranged in a regular, repeating pattern. a)a crystalline liquid b)a crystalline solid c)all gases d)all solids

Which element would mostly likely have an electron affinity measuring closest to zero