Chemistry / Conservation of Mass Crossword Puzzle

QUESTIONS LIST:

• combustion : reaction between substances usually including oxygen
• matter : solid, liquid or gas
• chemical reaction : occurs when 2 or more molecules interact and change
• bubbles : released when gases are produced in a reaction
• products : substances resulting from the reaction
• precipitate : when a solid suddenly appears in a solution
• physical change : form or appearance of a substance becomes different
• reactant : substances undergoing change in a reaction
• chemical change : 2 or more substances join to form new substances
• conservation of mass : mass of products always equals mass of reactants