Watching bubbles can tell us a lot about chemical reactions. When a gas is made during a reaction, it usually creates bubbles. These bubbles are a clear sign that something is happening.
Here are a few examples:
Acid-Base Reactions: When you mix vinegar (which is acetic acid) with baking soda (known as sodium bicarbonate), you see bubbles. These bubbles are actually carbon dioxide gas. This shows that a chemical change is happening!
Experiment Example: Think about mixing calcium carbonate with hydrochloric acid. You would see bubbles again, which means a reaction is taking place.
Besides bubbles, you can also notice changes in color and temperature during these reactions.
For example, if a substance changes color, it might mean a new substance has been created.
Also, if the temperature goes up or down, that tells us if the reaction is giving off heat (exothermic) or taking in heat (endothermic).
All these signs together help us understand that a chemical reaction has happened.
Watching bubbles can tell us a lot about chemical reactions. When a gas is made during a reaction, it usually creates bubbles. These bubbles are a clear sign that something is happening.
Here are a few examples:
Acid-Base Reactions: When you mix vinegar (which is acetic acid) with baking soda (known as sodium bicarbonate), you see bubbles. These bubbles are actually carbon dioxide gas. This shows that a chemical change is happening!
Experiment Example: Think about mixing calcium carbonate with hydrochloric acid. You would see bubbles again, which means a reaction is taking place.
Besides bubbles, you can also notice changes in color and temperature during these reactions.
For example, if a substance changes color, it might mean a new substance has been created.
Also, if the temperature goes up or down, that tells us if the reaction is giving off heat (exothermic) or taking in heat (endothermic).
All these signs together help us understand that a chemical reaction has happened.