Jack777

Epistemology, I like this, thanks. I'm going to take the time now to read over all the posts in chronological order, well, just your posts. That other guy doesn't understand, I get the impression he thinks I'm a student or something, I'm not, I'm just a 65 year old guy who's actually trying to learn and understand this stuff.

Thanks.

Ok, this is great, thanks but sorry to repeat myself, how did he know the bottle he grabbed was chlorine? I wish I had a time machine to go back and ask him this. Edit, sorry. I see how you mentioned he called it chlorine.

Thanks, mist? I've always called it mist.

Dang. I’m not. I’m sorry.

Read it but sorry, I don’t understand it. I’m still stuck on just exactly how back in Dalton’s day he identified all of these materials he was working with. They had to be dug up and identified somehow right?

This is good. But I still have to somehow wrap my head around how they knew there atoms. Sorry, I've never heard of this but to be honest this is too much too soon. I actually bought a cartoon book for children but even here they assume a body of knowledge about atoms. I'm going to have to take a break as I just can't seem to grasp this.

Thanks. I've been listening to podcasts and reading so I'm slowly learning some stuff. Here's my notes I've made so far while listening: ractical chemistry. Fire Fermenting. Learning how the ancients created copper from ore. Natron. Bronze. Gold. Mercury might have been discovered with silver mining. Cinnabar. 1st century CE, indicator paper. Thales. Khemeia Ascetic acid from vinegar Lemon juice Mineral acid. How is this made? Used for assaying metals. Distillation & filters. Alcohol is a good solvent. Nitric and hydrochloric acid can dissolve gold? Ammonia from distilled urine. Metallurgy When lead was melted its weight increased. Double displacement Torricelli & Boyle Brandt phosphorus Phlogiston and calx Conservation of mass Specific heat. Electrons? 1800’s, organic chemistry Avogadro’s constant. How in the world did he come up that?

I apologize in advance, this too is still over my head. Honestly, way over my head. I'm still trying to grasp how they knew something was a molecule. I just started listening to a podcast today called The History of Chemistry by Steve Cohen. So far this is easy for me to follow and understand. I like what he said how it was described, "A chemical process is invisible with no obvious explanation." If you need to quit I'll understand as this is a slow process for me but I will eventually get it. Thanks.

Sorry, it is hard for me to understand. I'm going to read the books I bought and hopefully I will be able to grasp it.

A principle I don't yet grasp because how do they measure atoms? I guess I have to learn about atomic weights.

Sorry. I meant the people back back then who used the terms hooks. How did they determine if something was bonded? This set of formulas above is quite complicated to me. It's difficult to visualize. I'm sure in time I'll get there. Thanks again.

Thank you, this is a great explanation. But what are these hooks? How do they know they have hooks?

Thank you, that was very interesting. Absolutely fantastic! This was exactly what I was looking for, you have no idea how much I appreciate this. I bought some kids chemistry books as well as the two mentioned in this post. Now I can understand how things were done and can start to move on, I just needed a historical deep dive for a reference for me. Thanks.

Hi, yes, a good description. Ok, sorry for the delay as I've been busy. I watched the video and it looks easy to make and no problem, I have no desire to make it. However, and here's my question, how in the world did they know it was actually acid back then? And when they found newer ways of making acid how are they sure it's really acid? I know these may seem like stupid questions, sorry. I've been watching a lot of YT's on the history of this but no one has ever showed the most basic things like how they knew it was acid. All the books and videos I have assume that people just know. Yes, weight is how much something weighs and mass is the density of something. On the moon the astronauts may have weighed 300 pounds with all the gear but the gravity made them feel lighter yet they still had the mass, the momentum of that mass.