WE RECOGNIZE ACIDS AND BASES USING RED CABBAGE STOCK

Nature Explorers Club

BOIL RED CABBAGE WITHOUT SALT

WE NEED VINEGAR AND BAKING SODA

INTO THE GLASS ON THE RIGHT WE POUR VINEGAR (ACID), ON THE LEFT – WE ADD

BAKING SODA (BASE)

THE STOCK CHANGES ITS COLOUR: BAKING SODA (BASE) IS BLUE, VINEGAR (ACID) IS RED

WE TOOK TWO PLATES. ON THE PLATE ON THE LEFT WE POURED SOME VINEGAR, AND ON THE

PLATE ON THE RIGHT WE POURED SOME WATER WITH BAKING SODA

WE CAN SEE THE RESULTS AGAIN: ROLLED PIECES OF PAPER TOWEL ARE RED-PURPLE ON THE PLATE WITH

VINEGAR (ACID) AND BLUE – ON THE PLATE WITH BAKING SODA ( BASE)

WHEN WE POUR THE STOCK WITH BAKING SODA INTO THE STOCK WITH VINEGAR WE GET PURPLE VOLCANO

SCIENCE IS FUN!!!

POLISH EXPLORERS HAD FUN MAKING THIS EXPERIMENT

THANK YOU FOR WATCHING

Szkoła Podstawowa nr 9Dzierżoniów , Poland