Imagine yourself making a nice cup of tea on a cold winter day. You begin by boiling some water in a kettle. Next, you add the steaming liquid to your cup. Then, you open a tea bag and repeatedly dunk it into the water. You pour a dash of milk and drop a few sugar cubes into the cup, stirring the solution with a spoon. Finally, you squeeze a bit of lemon into your tea mixture. However, before you have time to stir the lemon juice into your tea, the liquid forms clumps. In other words, your tea has curdled!
Based on the scenario, answer the questions below.
Which of the four indicators of a chemical change is described in the paragraph above?
What makes the tea with milk and lemon curdle?
please help
milk comes out of solution forming curds.
Could it be the pH of the lemon acidifed the milk? Acid + Milk= curds
Based on the scenario described, the indicator of a chemical change that is described is the formation of clumps in the tea. This indicates a change in the composition and physical properties of the tea, suggesting a chemical reaction has taken place.
The curdling of the tea with milk and lemon is likely caused by the acidity of the lemon juice. When lemon juice is added to a milk-based tea, the acid in the lemon juice reacts with the proteins in the milk. This reaction causes the proteins to denature, which means they unfold and form clumps. This curdling effect occurs due to the change in pH caused by the addition of the acidic lemon juice to the tea mixture.
Based on the scenario described, the indicator of a chemical change mentioned is the "formation of clumps" when the lemon juice is added to the tea.
The curdling of the tea occurs when the lemon juice, which is acidic, comes into contact with the milk. The acidity of the lemon juice causes the proteins in the milk to denature and coagulate, resulting in the formation of clumps and curdling of the mixture.