Is+it+an+Acid?

= **Is it an Acid Practical - Page 35 - Science Alive 2** =

This exercise was a way of testing how effective Sodium Bicarbonate is at being an indicator. Sodium Bicarbonate is a Base. When we talk about indicators, in this unit of Chemistry, we are referring to the ability of a substance to identify if a substance is an Acid or a Base or if a substance is neutral.

Have a look at your results - did you notice a pattern or trend? My observation was that known Acids (that is substances that I KNEW to be acids) showed fizzing/bubbling. This kind of reaction tells us that a kind of gas is being produced. We know that it is a Chemical Reaction.

So when Sodium Bicarbonate (a KNOWN Base) + an Acid --> we a reaction.

We call this a neutralisation reaction.

Key:

+++ Marked fizzing reaction identified (so a LOT of bubbles) ++ Moderate fizzing reaction identified (so SOME bubbles) + Minor fizzing reaction identified (so SMALL amount of bubbles). 0 No reaction identified

Observations ||  ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   || Water || 0 ||  ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||
 * || Ms.Taylor's
 * Vinegar || +++ ||  ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||
 * Yogurt || +++ ||  ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||
 * Fruit Juice || ++ ||  ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||
 * Distilled