Exploring Substances: Acidic, Basic and Neutral

Vocabulary flashcards for the substance categories listed in the lecture notes.

Weakly acidic

Weakly acid represents number 6 on the PH scale, and it is quite weak in acidity and is close to neutral

Universal indicator

A universal indicator is a mixture of number of indicator which chose, and that it gives a different colour for different pH values. This indicator can be in the form of a solution or into a paper known as the pH paper.

Olfactory indicators

There are some substances whose odour changes in an acidic or basic medium. These are called olfactory indicators

Ph scale

In 1909 The pH scale was created to measure strengths of acid and base. PH scale ranges from 0 to 14. On the scale, PH 0 denotes the strongest acid and PH 14 is the strongest base, PH 7 is neutral. And 6 weakly acidic, 7.4 is Weakly alkaline. Alkaline is also known as bases

Neutral

Neutral denotes As number seven on the pH scale, Some examples are pure water