When we think about chemical reactions, there are some clear signs that show us a reaction is happening. Here are the main things to look for:
Color Change: This is one of the easiest signs to notice! For example, when iron rusts, it goes from shiny silver to a reddish-brown color. This change in color can tell us that something new is being formed.
Gas Production: If you see bubbles or smell a gas, a reaction is likely taking place. Think about what happens when you mix vinegar and baking soda. You’ll see fizzing because carbon dioxide gas is made!
Temperature Change: Reactions can either give off heat, making things feel warm, or take in heat, which makes things feel cooler. For example, when ammonium nitrate mixes with water, it cools down and shows us a chemical change is happening.
Precipitate Formation: Sometimes, when two liquids mix, they create a solid called a precipitate. For instance, if you mix silver nitrate and sodium chloride, you will see a white solid form.
By noticing these signs, you can become great at spotting chemical reactions all around you!
When we think about chemical reactions, there are some clear signs that show us a reaction is happening. Here are the main things to look for:
Color Change: This is one of the easiest signs to notice! For example, when iron rusts, it goes from shiny silver to a reddish-brown color. This change in color can tell us that something new is being formed.
Gas Production: If you see bubbles or smell a gas, a reaction is likely taking place. Think about what happens when you mix vinegar and baking soda. You’ll see fizzing because carbon dioxide gas is made!
Temperature Change: Reactions can either give off heat, making things feel warm, or take in heat, which makes things feel cooler. For example, when ammonium nitrate mixes with water, it cools down and shows us a chemical change is happening.
Precipitate Formation: Sometimes, when two liquids mix, they create a solid called a precipitate. For instance, if you mix silver nitrate and sodium chloride, you will see a white solid form.
By noticing these signs, you can become great at spotting chemical reactions all around you!