Physical Properties and Change Crossword Puzzle

QUESTIONS LIST:

• freezing point : the temperature at which liquid turns to a solid
• boiling point : the temperature at which a liquid boils and turns to vapour
• brittleness : breakability or flexibility
• lustre : shininess or dullness
• viscosity : ability of a substance to flow and pour readily
• optical clarity : ability for light to pass through something
• rusting : when iron turns an orange colour
• reactivity : how well a compound can react with another compound
• malleability : the ability to be hammered into a thin sheet
• ductility : the ability to be stretched
• hardness : relative ability to be scratched