Trump says Americans 'don't need' Canadian products, calls CUSMA 'irrelevant' Apple issues major security warning to iPhone users 1,000 layoffs are coming. What now? Dietary supplement recalled over ...

SIOUX CITY (KTIV) - Gather your supplies! In this episode we will use everyday materials to explore pH and how it changes between acids and bases. Blackberries contain a chemical class called ...

An acid-base indicator is a substance that changes color as the pH of the solution changes. Indicators work because they are weak acids which when in solution, exist in equilibrium with their ...