Is Matter Conserved when Steel Wool Burns?
Summary
TLDRIn this engaging science video, Caleb Fleming of Flimdog Science explores the occurrence of a reaction using steel wool combustion as a demonstration. He discusses the evidence of a reaction, such as color change and heat release, and identifies the reaction type as combustion. Caleb then delves into the mass change during the process, explaining how the iron in the steel wool reacts with oxygen to form iron oxide, resulting in an increase in mass. The video is filled with curiosity and questions that inspire viewers to think about the science behind everyday phenomena.
Takeaways
- 🔬 The video is a science demonstration by Caleb Fleming, focusing on three main points about a reaction involving steel wool.
- 🔍 The first point is to determine if a reaction occurred, with evidence including color change, heat release, and mass change.
- 🔥 The second point discusses the type of reaction, which is identified as a combustion reaction due to the presence of flames.
- 🧪 The third point investigates the change in mass during the reaction, comparing the burning of isopropyl alcohol to steel wool.
- 📉 Isopropyl alcohol loses mass as it burns because the atoms rearrange into gases that escape into the air.
- 📈 Steel wool gains mass as it burns because the iron reacts with oxygen to form iron oxide, which is more massive than the original iron.
- 🌡 The steel wool wire heats up to approximately 700 degrees Celsius during the reaction, causing it to glow.
- 🤔 The video raises several questions for further exploration, such as the effects of different environments on the reaction and the possibility of recovering iron from iron oxide.
- 👫 The script uses a humorous analogy comparing chemical reactions to a high school love story, including synthesis, decomposition, single replacement, and double replacement reactions.
- 📚 The video is educational, aiming to explain complex chemical concepts in a relatable and engaging way.
- 🔗 The description of the video contains links to additional resources for those interested in learning more about combustion.
- 🎥 The video concludes with an invitation to subscribe for more content, emphasizing the presenter's enthusiasm and curiosity.
Q & A
What is the main topic of the video?
-The main topic of the video is to explore chemical reactions, specifically focusing on evidence of a reaction, the type of reaction, and the change in mass during the burning of steel wool.
What are the three key aspects discussed in the video regarding the chemical reaction?
-The three key aspects discussed are: 1) Determining if a reaction occurred and what evidence supports it, 2) Identifying the type of reaction from five general types, and 3) Explaining the change in mass as steel wool burns.
What evidence of a reaction did the video demonstrate with the burning steel wool?
-The evidence of a reaction included a color change, heat release, and a change in mass, which was observed as the steel wool burned.
What is the temperature at which the steel wool wire heats up during the reaction?
-The steel wool wire heats up to approximately 700 degrees Celsius during the reaction.
What type of reaction did the video suggest occurred with the burning of steel wool?
-The video suggested that the reaction occurring with the burning of steel wool is a combustion reaction, which is one of the five general types of reactions.
How does the mass change during the combustion of isopropyl alcohol?
-During the combustion of isopropyl alcohol, the mass decreases because the atoms rearrange into gases (CO2 and H2O) that escape into the air and do not contribute to the mass on the scale.
Why does the mass increase when steel wool burns?
-The mass increases when steel wool burns because the iron in the wool reacts with oxygen in the air to form iron oxide, which is a compound that is more massive than the initial iron.
What is the difference between the mass change in burning isopropyl alcohol and steel wool?
-The mass decreases when burning isopropyl alcohol because the reaction products are gases that escape. In contrast, the mass increases when burning steel wool because the reaction forms a more massive compound, iron oxide, which remains on the scale.
What happens to the mass of steel wool as it reacts with oxygen in the air?
-As the steel wool reacts with oxygen in the air, the mass increases due to the formation of iron oxide, which is heavier than the original iron.
What are some of the follow-up questions or experiments suggested in the video regarding the burning of steel wool?
-Some suggested follow-up questions or experiments include testing the burning in different environments (oxygen-rich, CO2 rich), using different ignition sources, and exploring what happens to the electrons and energy during the reaction.
Can the iron be retrieved from the iron oxide formed after the burning of steel wool?
-The script does not directly answer this, but it implies that further investigation is needed to determine if and how the iron can be retrieved from the iron oxide.
Outlines
🔬 Introduction to Reaction Analysis
In this introductory paragraph, Caleb Fleming, the host of the science video, greets his audience and sets the stage for a lesson on chemical reactions. He emphasizes self-restraint in focusing on just three key aspects of a reaction: evidence of a reaction, the type of reaction, and the change in mass during the reaction. Caleb uses a playful narrative to engage viewers, promising to explore these topics with the example of burning steel wool. The paragraph concludes with a demonstration of a reaction occurring, evidenced by color change, heat release, and mass change, inviting the audience to consider what type of reaction they just witnessed.
🔥 Combustion and Mass Change Explanation
This paragraph delves into the specifics of combustion, contrasting the behavior of isopropyl alcohol with steel wool when burned. Caleb explains that the mass of isopropyl alcohol decreases as it reacts with oxygen, forming gases like CO2 and H2O, which escape and do not contribute to the mass on the scale. In contrast, burning steel wool results in an increase in mass due to the formation of iron oxide, where the iron reacts with oxygen to form a compound heavier than the original iron. The paragraph uses a hands-on demonstration to illustrate these concepts, highlighting the visual and tangible changes that occur during the combustion process. It concludes with a thought experiment, encouraging viewers to ponder the implications of these reactions in various environments and conditions.
❓ Curiosity and Further Exploration
The final paragraph of the script poses a series of intriguing questions that invite further exploration of the chemical reactions discussed. Caleb prompts viewers to consider the effects of different environments, such as oxygen-rich or CO2-rich conditions, on the burning process. He also raises questions about the role of electrons and energy in combustion, the possibility of reverting iron oxide back to iron, and whether the entire wire or just the surface turns into iron oxide. The paragraph serves as a call to action for viewers to subscribe for more content, emphasizing the excitement and curiosity that scientific exploration can inspire.
Mindmap
Keywords
💡Reaction
💡Self-restraint
💡Combustion
💡Evidence
💡Mass
💡Synthesis Reaction
💡Decomposition
💡Single Replacement Reaction
💡Double Replacement Reaction
💡Iron Oxide
💡Isopropyl Alcohol
Highlights
Introduction to science experiment and explanation of three key focus areas: reaction occurrence, type of reaction, and change in mass.
Visual evidence of a reaction, including color change and heat release when steel wool is burned.
Explanation of different types of chemical reactions using a relatable story about relationships and lab partners.
Description of combustion as one of the reactions observed, with flames and heat as evidence.
Comparison of mass change in burning isopropyl alcohol and steel wool, emphasizing the difference in behavior due to the formation of gases in alcohol combustion.
Explanation of why the mass of steel wool increases during burning, due to the formation of iron oxide as oxygen binds to iron.
Demonstration of how steel wool reacts with oxygen in the air, leading to an increase in mass as iron oxide forms.
Discussion of the concept of mass increase in the context of chemical reactions, particularly focusing on iron and oxygen interaction.
Explanation of why the mass initially decreases during the burning of steel wool and then increases as more oxygen binds to the iron.
Questions posed about different scenarios, such as burning steel wool in an oxygen-rich or CO2-rich environment.
Curiosity-driven exploration of the potential effects of burning steel wool under different conditions, such as underwater or in a jar filled with oxygen.
Query about the possibility of retrieving iron from the iron oxide formed during combustion.
Inquiry into whether the entire steel wool turns into iron oxide or just the outer layer.
Encouragement to viewers to subscribe for more science experiments and explorations.
Conclusion with a tease of future experiments and a reminder of the various questions left unanswered for future exploration.
Transcripts
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science with me caleb subscribe like
comment hit that bell
science lovers welcome to flimdog
science i'm caleb fleming and first off
i have fantastic news for you he's okay
right you're good
eyes just a little wandering but uh he's
good today we're going to look at three
things my self-restraint to only do
three is unbelievable you have no idea
how much i want to look at like 20 other
things but three things today first
we're gonna see did a reaction occur and
if it did what's the evidence
second what type of reaction do you
think this was of our five general types
of reactions third how do we account for
the change in mass as the steel wool
burned
let's begin did a reaction occur let me
do a really simple version of what we
did that's going to go really fast
you saw that so did a reaction occur
here's your normal evidences of reaction
you might get some bubbles in a solution
you might see a color change in the
solution
you might see a precipitate form
you might feel it get cold or feel it
get hot
if there's any other evidences i forgot
let me know in those comments when you
watch that did any of those things occur
did you see the color change
you saw it right i saw it too
did you see the heat being released
i could feel it it was it was radiating
off there the wire actually heats up to
about 700 degrees celsius is what i read
that's why it's glowing hot third
we had a change in mass and that is
evidence that we might have a
precipitate forming but it's not in
solution it's on the wire did a reaction
occur
you tell me what was our evidence
second what type of reaction occurred
let me tell you a quick story that goes
through our five types of reactions
you're in lab class where you've always
wanted to be or always get back to and
sitting across from you is your dream
person your eyes connect over a flaming
green cloud of fire that's going from
this reaction and you realize
this is my person
you combine in a synthesis reaction you
have your special person but because
it's high school it's a highly unstable
relationship
and you decompose
into two independent scientists once
again
and what was a primary reason that you
decomposed into two independent
scientists once again
it's because your lab partner connected
eyes with another person sitting at your
bench and not only did you decompose you
were replaced
so your lab partner joined someone else
and single replacement reaction
but all is not lost because you go out
to ice cream and you take your date and
your best friend takes their date but as
you're sitting at that table the eyes
cross of opposite buddies
and you have double replacement reaction
go on and the flames of true love and
combustion take place
so what type of reaction did we see go
on
we saw fire
flames that's combustion we also saw
potentially one other thing that we'll
try to get to by the end
so third thing we want to check out how
do we explain the change in the mass
first off let's think about what's going
on with combustion if you've missed our
combustion videos i'm gonna put a few
links down in the description i've got
like i don't know four or five six
something like that combustion videos
including a fun little handwritten
tutorial about isopropyl and to help us
understand the mass when we burn steel
wool let's look at what happens to the
mass when we light isopropyl alcohol on
fire
1.67 grams here
can you see what's happening to the mass
there might be a little reflection
the mass is immediately going down
immediately so the isopropyl alcohol is
a carbon chain with an alcohol group and
oh attached to it and as the alcohol
bumps into the oxygen in the air the
alcohol the carbon the oxygen and the
hydrogen in that collision are all
rearranging
so the alcohol right now is pushing down
on the scale giving us our mass reading
as the alcohol reacts with the oxygen
co2 is leaving
h2o gas is leaving
so the carbon and oxygen are leaving as
a gas that's not pushing on the scale
the hydrogen and oxygen are leaving as a
gas that's not pushing down on the scale
so the mass pushing down on the scale is
slowly decreasing until we're left with
essentially
nothing
so that's what's going on with alcohol
the mass decreases of the thing that's
burning not because the atoms are lost
but because they're rearranged into a
gas that goes into the air how is that
different than steel wool well when you
burn steel wool what did we see happen
to the mass let's burn a little more
just because it's incredibly cool
so right now i have 2.81 grams of steel
wool let's see what happens to the mass
when we burn it
we'll pay special attention to that
okay first the mass decreases which is
interesting we can talk about why but
now the mass is going up why is the mass
going up steel wool is made of iron and
as the iron reacts with the oxygen in
the air instead of becoming a gas that
leaves it grabs the oxygen and sticks to
it
so the iron is not the only thing
pushing down on the scale now it's the
iron and the oxygen that stuck to the
iron making a iron oxide compound that
is now more massive so the scale's going
to register it as more mass
and so the mass here is increasing
so cool color change heat getting more
mass
so many questions
i have so many questions so imagine this
is our little guy from the beginning
okay
19.1 we touch him with the battery
and what starts happening it starts
reacting with the oxygen in the air
the oxygen in the air starts sticking to
them
we're no longer at 19. now we're 21. my
little guy is getting more and more
massive as these oxygens in the air
start sticking to them so the oxygen
reacts with the iron
in the steel wool
sticks to it making
this iron oxide compound
and the iron oxide compound is more
massive than your initial iron compound
that you started with at the beginning
and it's pretty much pure iron with a
little carbon in it
so
our iron oxide at the end a little more
mass than the iron that we started with
super cool reaction
now let's think about what was happening
when this guy was combusting
does that make sense now when you watch
that how the oxygen reacting with the
iron to make that iron oxide which is
now more massive and thus there's more
mass it's weighing more as time goes on
so fun questions for you i have so many
questions
so many what happens if you like this in
an oxygen-rich environment what happens
if it's a co2 rich environment we could
do that with like dry ice what happens
if you light it when it's wet or if it's
under water or if it's in a jar with
water surrounding it or in a jar filled
with oxygen or a jar filled with co2
what happens if you try to light it with
just regular match or a lighter what
happens to the electrons that allow this
to take place where's the energy coming
from that allows it to burn can we get
the iron back from the iron oxide that
forms is the whole wire turning into
iron oxide or is it just the periphery
there's so many things that i'm curious
about but we're gonna stop right now
self control
if you haven't yet consider subscribing
so you don't miss out and we will do
this again really soon i can't wait have
a great day
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