Changes to Materials Crossword Puzzle

QUESTIONS LIST:

• precipitation : a process of mixing two solutions where a solid is formed.
• bubbling : an observation when a chemical reaction produces a gas.
• purple : colour of universal indicator when added to a strong alkaline solution
• lime : what do farmers spread of acidic soil to neutralise it.
• neutralisation : the process when acid is added to an alkali to form salt and water.
• limewater : turns milky when carbon dioxide is bubbled into it.
• hydrogen : this gas extinguishes lit splint with a 'pop' sound.
• physical : the type of change where no new substance is formed
• chemical : what kind of change has taken place when iron reacts with sulfur to form iron sulfide
• burette: the long piece of apparatus used to neutralise an alkali or acid very accurately.
• seven : ph of pure water.
• hydrochloric : name of the acid found in stomach.
• corrosive : term given to substances that burns living tissues.
• reactants : term given to substances on the left-hand side of an equation.
• oxygen : this gas relights a glowing splint.
• magnesium oxide : the compound formed when magnesium reacts with oxygen.
• variables : the things that we change or keep the same in a scientific experiment.