Water droplets: surface tension at its finest
This is written for Chemistry or Biology students studying for exams, and people who generally want to know how stuff works. After all, water is an *essential* component of life on Earth; wouldn’t it be interesting to know how it does what it does?
Below is an information-packed video about the Seven Properties of Water. The video may be boring, but watching it will take exactly 1/16th the time that it would take to read a chapter in a gigantic textbook. Also, watching the video will take much less time than reading Wikipedia‘s article on water.
Overview of Water:
Water is made up of zillions of water molecules. Each water molecule is made up of two hydrogen atoms (2H’s) and one oxygen atom (O).
In any given water molecule, electrons — which have negative (-) electronic charges — are more concentrated around the oxygen atom than the two hydrogen atoms. This means that an entire water molecule as a whole has one positive (+) end (“the north pole”) and one negative (-) end (“the south pole”). The hydrogen end is positive (+) and the oxygen end is negative (-).
Since an entire water molecule has two different “poles,” it is termed “polar.” A water molecule’s polarity causes its oxygen atom (-) to be attracted to a hydrogen atom (+) in a different water molecule; opposites do attract. It is in this manner that the oxygen atom (+) of one water molecule is connected to a hydrogen atom (-) of another water molecule. The thing that connects these two water molecules is called a hydrogen bond.
The fact that these special hydrogen bonds connect water molecules to one another — and that hydrogen bonds are weak compared to chemical bonds in other chemical substances — is what makes water unique, and is what gives water its seven properties that help all organisms continue their survival on Earth.
The Seven Properties of Water (and examples of how they affect your everyday life!)
1) Solvent = stuff dissolves into water very easily (e.g., Alka Seltzer tablet dissolving in glass of water)
2) High Specific Heat = it takes a very long time to raise the temperature of water (e.g., a flame raises the temperature of a metal pan much faster than it can raise the temperature of water)
3) Cohesive→&←Adhesive = this is how water defies ↑ gravity! Water molecules stick to one another (Cohesion) and water molecules stick to other, non-water objects (Adhesion) (e.g., water molecules stick to one another and to the inside of a tree in order to move upwards through the tree and deliver nutrients from the soil to its uppermost branches)
4) SurfaceTension = this is why water beads up into water droplets on many objects (e.g., water droplets on a leaf)
5) Variable pH = hydrogen levels are variable due to the weakness of hydrogen bonds, which is why water can be the main ingredient in both coffee (high pH levels = acidic) and bleach (low pH levels = basic)
6) D i s s o c i a t i o n = when water “breaks apart” (e.g., some people believe that the dissociation of water has health benefits because the electric charge of the human body could combine with the opposite charge found in water to create energy)
7) Three Physical States = liquid form (water), solid form (ice), and gas form (steam). These are dictated by the different ways that hydrogen bonds can be connected
– Jonah Lundberg
© 2011 Jonah Lundberg. All Rights Reserved. Powered by WordPress.
Tip #1: FROZEN RIVER (courtesy of esquire.com)
– don’t cross it
– if you have to cross it, then Blue ice is the strongest, followed by White. Avoid ice that is gray with puddles.
– four inches is the minimum safe thickness
– when crossing, spread your weight as much as possible by crawling on your belly. (Channel your inner penguin.)
– if you do fall through, don’t plan on climbing out. Plan on *swimming* out. Kick yourself upward as hard as possible, reach out as far as you can, and get your chest back on the ice. Then keep kicking and dragging, arms out and chest down, until you’re out.
Tip #2: DRIVING IN THE RAIN (part one)
– How to achieve good vision while driving during a heavy downpour: wear sunglasses. (Really.) You still see the drops on the windshield, but not the sheet of rain falling.
Tip #3: DRIVING IN THE RAIN (part two)
– Never drive in the rain with cruise control on. If the cruise control is on when your car begins to hydro-plane (tires losing contact with pavement), then your car will accelerate, your wheels will begin to spin at a higher and higher rate of speed, and eventually your whole car will take off like an airplane.
1) Blue & White ice + channel your inner penguin
2) wear sunglasses when it rains
3) cruise control + rain = airplane (sounds awesome, not awesome)
– Jonah Lundberg
My brother, an auditor for a major accounting firm in NYC, sent this to me via email. This post is in honor of my brother, young auditors all across the country, and cats.
You are listening to jazz — Your first day at work is great. Your fellow auditors are wonderful, the office is nice, you love your clients, and when you finally get paid it is the best!
You are listening to pop music — After a while you are so busy that you are not sure if you’re coming or going anymore.
You are listening to heavy metal — This is what you feel like after ONE month.
You are listening to hip hop — You become bloated due to stress, you’re gaining weight due to lack of exercise because you are so tired and have so much work to do and, when you do get home, you feel sluggish and suffer from constipation. Your fellow co-workers are too cheerful for your liking and the walls of your audit room are closing in. You have started thinking ‘WHATEVER’ about your team.
You are listening to GANGSTA RAP — After more time passes, your eyes start to twitch and you forget what a ‘good hair day’ feels like as you just fall out of bed and load up on caffeine.
You are listening to the voices in your head — You have locked yourself in the bathroom to keep people out. You wonder WHY you are even here in the first place and WHY you became an auditor!
Abroad in New Zealand: bungee jumping, skydiving, white water rafting, et cetera, and I end up writing THIS?Posted: January 24, 2011
I originally wrote “Beth” as a writing exercise that was intended to help “increase powers in sentence writing.” I decided to “go the extra mile” by using way too many conjunctions and absolutely no punctuation whatsoever (“polysyndeton”). This decision was inspired by passages in Cormac McCarthy’s All the Pretty Horses and many run-on sentences written by Ernest Hemingway. Thankfully, the astonishingly long 250-word sentence was capable of being cut into a poem format, and would ultimately become the poem that can be seen below.
“Beth” is based on my experience at Bethells Beach with the Boston University study abroad group in July 2010. I wanted to express the powerful and raw personality of New Zealand’s nature by describing the perfect example of a New Zealand beach. For us Americans, a typical beach is sunny, warm, and relaxing; in New Zealand, however, the typical beach is wild, unforgiving, desolate, colossal, stunning, beautiful, surreal, strong, spiritual, and absolutely mesmerizing. All these adjectives would never be able to describe what I actually wanted to express, so I – in a very “Romantic” mood – wrote this instead…
NOTE: “Beth” has since been published on BU Quad — Boston University’s independent online magazine — with a vocal recording performed by yours truly. Please feel free to check it out over on their website!
BethThe wind whooshed downward like the massive broom tips of some giant maid Frantically sweeping the dirty mist under the old rug of grey clouds looming Above the sound of a frothing sea far off in the distance. And the filthy top-layer of dusty black sand came to life, Slowly tumbling over itself and tumbling over and over, Nervously popping upwards in higher and higher bounces Like fleas collectively taking flight like an albatross: Scraping along the oceantop then gliding through a trough Then skimming a peak Then gliding again Then skimming again Then gliding again Until finally cupping a generous gust of wind only to be its captive And forced to soar wherever it wanted to blow. And it blew Toward the lone figure Hunched under the abandoned lifeguard tower like a penguin in a blizzard waiting for it to pass, And the wood wept its saturated tears upon his hair as he gazed out At the calamitous beauty of the place that Reviled his presence and Wished him gone To no avail Before succumbing to his patience and painting the faint brushstrokes of a rainbow descending From the clouds to let spears of sunlight Pierce the ground and Halt the wind and Pin the sand. And the man walked out To where the ocean reached toward him and stretched like taffy To create a mirror that reflected the clearing sky above, And he walked atop the mirror towards the foamy wall Of where the ocean peaked and tumbled and thrashed down upon itself And then he stood Where its powerful hands pulled his heels like a desperate lover Beckoning him To join her out far beyond where his eyes could see.
© 2011 Jonah Lundberg. All Rights Reserved. Powered by WordPress.
Hello world! This is my first official post, so I’ll keep it short and sweet. I’ve set up this blog to post two things: short stories inspired by my life, and random op-ed stuff. That’s it! (Basically this is me cloud computing, storing my writing online in case my computer crashes again; and why not cloud compute and learn about blogging at the same time?) If anyone out there actually reads this, thanks! Hope you enjoy it.
© 2011 akaK. All Rights Reserved. Powered by WordPress.