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Did you know that the periodic table, a cornerstone of modern chemistry, has a rich history dating back to the 19th century?
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It all started with Russian chemist Dmitry Mendeleev, who in 1869 arranged the known elements into a table based on their atomic masses and chemical properties.
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Mendeleev's periodic table was revolutionary, as it not only organized the elements, but also predicted the existence of elements yet to be discovered.
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Fast forward a few decades, and new elements were indeed discovered, filling in the missing spaces in Mendeleev's table and confirming his predictions.
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The periodic table continued to evolve, with elements being reclassified and reorganized as scientists learned more about their atomic structures.
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By 1913, Henry Moseley added the concept of atomic number to the periodic table, further solidifying its use as a tool for understanding the elements.
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Today, the periodic table includes 118 elements, each with its unique properties and uses. From the lightest hydrogen to the heaviest element, oganesson.
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The periodic table has come a long way from its humble beginnings, and continues to play a crucial role in the fields of chemistry, physics, and materials science.
Here are FIVE great reasons you should Spay or Neuter your pet!
1. Reduced risk of certain cancers:
Studies have shown that spaying and neutering can reduce the risk of certain cancers, such as mammary gland tumors in female dogs and testicular cancer in male dogs.
2. Decreased risk of overpopulation:
Overpopulation of pets is a serious problem.
Millions of animals are euthanized each year due to a lack of homes.
Spaying and neutering can help reduce the number of unwanted pets and decrease overpopulation.
Hey!
Can you tell if you cat is happy?
YEP!
Here are FIVE ways to tell if your cat is happy!
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1. What your cat sounds like!
If you’ve ever had a conversation with your cat, it’s a sign that they are happy!
Sure, they may be DEMANDING things of you, but it shows they are content and comfortable to be vocal with another species!
While the pitch of a meow is TOUGH to make a conclusion about, a higher pitched meow is associated with a happier cat, while a low pitched meow could be annoyance or frustration.
Did you known that today is CREATE A VACUUM DAY??
It's a weird day for pets as our families NEED to vacuum but that vacuum is A WEIRD DEVIL THING.
Let's talk about the history and science of vacuums! #CreateAVacuumDay
Back in ancient Greece, some scholars thought vacuums were just a myth!
One philosopher, Democritus, saw things differently.
He believed there was a void between atoms and referred to it as a vacuum.
Fast forward a few thousand years to Galileo Galilei.
Galileo's pump makers told him they could only pump water to 30 feet, but couldn't pull it out of a well more than that distance.
His student Torricelli, had a brilliant idea!
A hug a day may literally keep the doctor away.
🤗
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HISTORY:
The word HUG comes from the Old Norse word "hugga" meaning to comfort.
It is a way to share body warmth, which would have been helpful for survival.
You need two hands to hug, thus it's hard to hold a weapon.
Babies NEED hugs and do poorly without them.
HUG POWER 1: Increases feelings of safety
The hug decreases anxiety about the world.
A hug has been shown to affect our fearfulness too. It is easier to relax after a hug.