When burning a Magnesium Ribbon, would the color (the white dust) that it changed to be a chemical change? Or how about the spark it makes (I am just in basic chemistry, so that spark might be counted as a chemical change)?
So far I got from the help for Drbob:
1.Reacts with oxygen in the air to make MgO
2. Reacts with the nitron in the air
3. Sparks??
The spark is an effect of the chemical change, not a chemical change itself. nitron is an old, old, old, old name. I wrote nitrogen, I think, and you should too. But, perhaps if you monitor this site, another tutor may give you a clearer answer than mine seemed to be.
Also, is the white powder a chemical change? since color changing is a chemical change.
The FORMATION of the white powder is a chemical change or the production of MgO from Mg is a chemical change but white powder sitting in a beaker is not a chemical change. Do you know the definition of a chemical change? A chemical change is one in which the starting materials are changed to different products. It can be the synthesis of a new product or decomposition of an existing material. For example, when hydrogen gas reacts with oxygen gas, water is produced. We no longer have hydrogen gas and we no longer have oxygen gas. We have a NEW product, water, which is unlike either of the reacting materials. Likewise, when Mg ribbon reacts with oxygen of the air, we no longer have Mg, and we no longer have oxygen, both have been converted to MgO, a new entity. That process is a chemical change. You wanted to count the spark (the flame) as a chemical change. How would it fit the definition? You also suggested color. The color of my sofa is turquoise but its still a sofa when I finish looking at it. You wanted to count mass as a chemical change; however, if a weigh a beaker of pennies, I may find they have a mass of 55 grams BUT I still have a beaker of pennies. The pennies have not been changed into something different. I grant you that you may be able to trade those pennies for a candy bar and you might argue that you had changed pennies into a candy bar but the only thing that has happened is that the pennies were exchanged for a candy bar and someone else has the money and they still are pennies. They didn't suddenly get changed into dimes or quarters.
Any reaction you write with Mg in which the Mg is changed to something else is a chemical change. That's why\
Mg + O2 ==> MgO
Mg + N2 = Mg3N2
Mg + P ==> Mg3P2
I hope this helps.
Thanks alot! Your examples helpes me.
When burning a magnesium ribbon, both the color change and the spark produced can be considered as evidence of a chemical change taking place.
To understand why, let's break it down:
1. Color change: When magnesium (Mg) reacts with oxygen (O2) in the air, it forms magnesium oxide (MgO), which has a white color. So the white dust formed during the burning of magnesium is a result of the chemical reaction between magnesium and oxygen, indicating a chemical change has occurred.
To determine this yourself, you can perform an experiment. Start by taking a piece of magnesium ribbon and ignite it using a Bunsen burner or a lighter. Observe the color change of the magnesium ribbon as it burns, and you will see the white dust being formed. This experiment will allow you to directly observe the chemical change taking place.
2. Spark: The spark observed during the burning of magnesium is also a result of a chemical change. Magnesium has a high reactivity, and when it combines with oxygen, it releases a significant amount of energy in the form of heat and light. The spark produced is an indication of the intense heat generated during the combustion of magnesium.
To further investigate this, you can perform a similar experiment. Ignite the magnesium ribbon and carefully observe the sparks produced. You can also try burning the magnesium ribbon in a dark environment to get a better view of the sparks.
In summary, the color change (white dust) and sparks during the burning of magnesium can both be considered as evidence of a chemical change. To confirm this, you can conduct simple experiments to observe these changes firsthand.