Basic substances have a gritty texture.

TRUE

FALSE

A substance is added to pure water and the concentration of aqueous H + ions increases. What kind of substance has been added to the water?

an acid

a base

water

either an acid or a base

1. Answer;

False

Explanation;

Bases have some of the following properties;

They have a bitter taste They have a slimy, or soapy feel on fingers Most bases react with acids and precipitate salts. Strong bases may react violently with acids. Bases turn red litmus paper blue

2. Answer;

An acid

Explanation; When acids are dissolved in water, the concentration of the acid decreases and it becomes dilute. It dissociates in water to give H + ions or hydrogen ions. All acidic solutions contain more hydrogen ions than hydroxide ions, therefore when added to water it increases the concentration of H + ions in water, as water is a neutral substance whose concentration of H + ions is equal to OH-.