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This chem talk focused on gasses and spontaneous reactions and diffusion.  The particles in a gas are very spread out over long distances and they move around like crazy.  This is opposed to solids which stick together or liquid, which spreads out but not that much.  A reaction is spontaneous if it occurs without being driven by an outside force.  This ties in with Enthalpy and Entropy.  Diffusion is the process of a substance spreading out to evenly fill its container.  Effusion is also mentioned in this chem talk which is the opposite of diffusion.  Effusion refers to the movement of gas particles through a small hole.  In a diagram, an Effusion particles would be very spread out in contrast to Diffusion particles which would be closer together.  

chem talk 4.7

This Chem Talk talks about Enthalpy.  Enthalpy is a thermodynamic quantity equivalent to the total heat content of a system.  This means the quantity is equal to the total heat content of a system.  This talk also mentioned spontaneous reactions and how likely they are to happen.  This concept was pretty confusing to me, but the more I read the more I understood.  The book also had a lot of laws and rules that I understood very well.  I read them like 20 times and finally understood.  But it was confusing at first, but the more you read and try to understand things, the easier it gets.

4.6 blog

I enjoyed reading this blog because it contained new information that I am interested in and didn’t know before.  This section talked about electrolytes and how it is important that you always have electrolytes in your body.  Gatorade is a good source of electrolytes.  You could also buy water with electrolytes in it.  Electrolytes help you recharge your energy after you play sports.  This section was mostly about electrolytes, but it also mentioned ions which connected back to stuff we did in class and other lessons.  I love blogging and reading these chem talks.  They bring me joy.

new blog

This chem talk was about metals.  It related to the lab we did in class today.  We connected a bunch of wires to metals and connected them to a battery and lit a light bulb.  It was so cool!!!  Our group struggled at first but we got it with a little help from Mr. Desbois.  This chem talk was new to me.  I hadn’t learned about how metals work like this before.  It was interesting because I didn’t know that some metals react to certain things.  All metals have different properties, which react to different things.  Some metals react to nature.  Others make you react, such as fake jewelry, like zinc.  Your skin would react and leave marks.  This chem talk was very interesting and I’m glad it tied into what we did in class today.  It helped me understand the material better.  Can’t wait for next class!!!!!

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This section was all about Stoichiometry.  We have learned this before but not in much detail.  I thought it was a very boring chem talk compared to the others I have read.  This has to do with Moles, which is something we learned in the Winter term.  During Stoichiometry, moles are used during the equation.  This is very hard.  Stoichiometry is similar to unit conversions, but instead of using normal measurements, we are using moles.  We know how to use moles because we learned it earlier this year.  I really didn’t like this section, but I learned a lot from it.

5.2 checking up

  1.  Polarity in molecules is when there is a difference in charge direction towards one atom.

2.  London Dispersion forces are attractive forces, weaker than ionic and covalent bonds.  It happens with larger molecules especially because with more electrons the larger molecules are most likely to change their charge slightly.

3.  C5H12

4. B

chem talk 7

Today in class we went over different kinds of bonds, such as ionic, covalent, and polar.  I haven’t reviewed this yet until now and it is very interesting.  This chem talk explained how much stronger polar bonds are than molecular and ionic.  This makes sense to me because ionic and molecular would usually be smaller than polar.  This talk also discussed Van Der Waals equation and his force.  His force defines the attraction of intermolecular forces between molecules.  There are two types of Van Der Waals equations:  weak London Dispersion Forces, and stronger dipole-dipole forces.  I absolutely loved reading this chem talk.  It was such a wonderful read and definitely kept me busy during study hall!

chem talk 6

There are so many reactions that occur, and the majority of them occur in the ocean.  However, there are rules that help you figure out the products of precipitation.  An ionic compound is a chemical compound made up of ions held together by electrostatic termed ionic bonding.  This has to do with 3D figures, which we did in class.  At first, I was confused as to which pieces I should use for what, but quickly I got the hang of it.  Different balls have different holes in them and it’s important to use the right one.  Doing this in class gave me a much better idea of what I was reading for this blog.

3,6 chem talk

This chem talk discusses the chemistry of color pigments and using solid precipitates as pigments.  I do not know what this means, but I am excited to learn about it!  Solid precipitates can be used as pigments for paint.  It explains how there are many different kinds of reactions in the world and how most of them take place in the water.  That is where different cations and anions are combined, and water-insoluble ionic compounds are formed.  A double-replacement reaction is one type of precipitation reaction where a precipitate forms when one of the products is insoluble.  An insoluble ionic compound is defined as one that will not dissolve in water.

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This chem talk was very helpful, but a review for me.  We started doing this lab during class but didn’t get very far because class ended.  This section talks about molecules and how they relate to chemistry.  The best way to keep track of molecules is keeping them small.  They made it easy because they connect it to real life situations.  This was a rather boring chem talk for me because I don’t find it interesting to study small things that don’t matter such as atoms and molecules.