Color changes can be really interesting signs of chemical reactions! When substances mix together and react, they often change colors. This color change can tell us important things about what is happening.
New Substances Formed: When substances react, the tiny building blocks called atoms rearrange. This can create new substances that might have different colors. For example, when iron rusts, it goes from shiny grey to a rusty reddish-brown.
pH Changes: Some reactions can change how acidic or basic a solution is. This can change the color of special indicators. For example, if we put universal indicator in vinegar, it turns a reddish color, showing that the vinegar is acidic.
Red Cabbage Indicator: If you boil red cabbage, the juice can become a natural pH indicator. If you add lemon juice (which is acidic), it turns pink. If you add baking soda (which is basic), it changes to green!
Baking Soda and Vinegar Reaction: When baking soda and vinegar mix, they create bubbles of carbon dioxide. There might also be a slight color change if you add any indicators.
Noticing these color changes helps us understand what’s happening at a tiny level, making it a fun part of chemistry!
Color changes can be really interesting signs of chemical reactions! When substances mix together and react, they often change colors. This color change can tell us important things about what is happening.
New Substances Formed: When substances react, the tiny building blocks called atoms rearrange. This can create new substances that might have different colors. For example, when iron rusts, it goes from shiny grey to a rusty reddish-brown.
pH Changes: Some reactions can change how acidic or basic a solution is. This can change the color of special indicators. For example, if we put universal indicator in vinegar, it turns a reddish color, showing that the vinegar is acidic.
Red Cabbage Indicator: If you boil red cabbage, the juice can become a natural pH indicator. If you add lemon juice (which is acidic), it turns pink. If you add baking soda (which is basic), it changes to green!
Baking Soda and Vinegar Reaction: When baking soda and vinegar mix, they create bubbles of carbon dioxide. There might also be a slight color change if you add any indicators.
Noticing these color changes helps us understand what’s happening at a tiny level, making it a fun part of chemistry!