-
x

Meet New Friends!

Recommended friends are based on your interests. Make sure they are up to date.

Friends
Kidzworld Logo

What is The Periodic Table of Elements?

What is The Periodic Table of Elements? - Reviewed by Kidzworld on Dec 27, 2006
( Rating: 1 Star Rating)

Kidzworld tells you what the Periodic Table of Elements is about, how to read this chart and all about the element groups. - Page 1

We've discussed chemistry and we've mentioned the Periodic Table of Elements but we didn't go into a lot of detail about the periodic chart. Here's what you've always wanted to know about the Periodic Table of Elements and what you've been too lazy to ask your science teacher.

1

What IS the Periodic Table of elements?

The periodic chart is like the bible of chemistry. It's the most important reference in chemistry because it arranges all the elements in an easy to read chart. Elements are placed in order of increasing atomic number, from left to right and top to bottom. The different rows of elements are called periods.

Anyone using the Periodic Table can find out exactly what they need to know about an element. For example, a teacher can use carbon's atomic mass to find out how many carbon atoms there are in a 1 kilogram block of carbon. The layout of the elements also says a lot about each element. Elements found in the same column of the Periodic Table (known as a group) have identical electron configurations (the locations of the electrons in an unexcited atom) and behave pretty much the same way chemically. An example of this is group 18 elements which are all noble gases. (Keep readin' if you aren't sure what group 18 elements are - we'll explain it further down.) So even if you don't know anything about an element, it's not hard to get the 411 if you read the periodic chart.

1

How Do I Read the Chart?

Each element is represented by a letter (or two) and some numbers in the box. This basic info tells a lot about that element. Here's how you read the element - the number on top is the atomic number, the letter(s) in the box are the atomic symbol and the number on the bottom is the atomic mass.

Atomic Number - An element is defined by the number of protons in it. Carbon atoms have six protons, hydrogen atoms have one proton and oxygen atoms have eight protons. The number of protons an atom has is called the atomic number. The chemical behavior of an element depends on the number of protons in an atom.
Atomic Symbol - These are almost always one or two letters that represent an element. They're used worldwide and usually relate to the name of the element or the Latin name of the element. An example of this is "O" for Oxygen and "Ca" for Calcium.
Atomic Mass - The average mass of an element in atomic mass units (amu.) The mass in an atom is so small that we use amu. That's about the mass of one proton or neutron. The atomic mass is a decimal number on the Periodic Table because it's an average of the various isotopes (one or more atoms that have the same atomic number but different mass numbers) of an element. To find the average number of neutrons for an element, simply subtract the number of protons (atomic number) from that atomic mass.

For the element groups and more info, click here.

Related Stories:

8 Comments

Related Stories

Kidzworld tells you what the Periodic Table of Elements is about, how to read this chart and all ...
Confused about Chemistry? Looking for simple answers? It's not that hard to follow if you break i...
F1020132572468

What's Your Fave Chemical? Vote!

  • Hair dye. I love getting a whole new look.
  • Salt. Food wouldn't be the same without salt.
  • McDonald's secret sauce. It tastes good but what is it?
  • The cheese in the can. That stuff is the best!

Random In The Forums

LILDUA
LILDUA posted in New Users:
reply about 2 hours
LILDUA
LILDUA posted in New Users:
well it have been approved.. here it is.. 
reply about 2 hours
rainbowpoptart
"AlphaT" wrote:Let's get Trumping. Please don't ever say that again. (turns out that's an actual word. your meaning of it is what makes it.. just, no. don't) "AlphaT" wrote:Underground tunneling? Tunnels are used for high profile items or individuals. If you're shipping hundreds of millions worth of contraband over the border every month, or are smuggling in wanted criminals/terrorists, then you dig a tunnel. And while there is much more to do than build a wall in order to stop the flow of contraband, a border wall would curb the mass majority of illegal immigrants flowing into the United States. .."Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances."It's not prohibiting the free exercise of Islam to ban Muslim immigration. The Muslims who would be banned would not be in our country, and thus our Constitution would not apply to them. Essentially, it would prohibit the exercise of their religion about as much as it would prohibit the exercise of any other non-American. Now, if we were to deport Muslims simply for being Muslim, then that would violate their right to free exercise. I figured this was where I was flawed. Congratulations, you win. Would you like a cookie? "AlphaT" wrote:Yes, I saw that meme too. Let's just agree that there's a difference between the head of an international real estate conglomerate worth over 10 billion dollars....and Yeezy. But why would I disagree? Maybe both Trump and West have egos bigger than their mansions, but at least Donald knows what he's doing. Kanye's just a bonehead.
reply about 4 hours
LowkeyEli
LowkeyEli posted in Debating:
His wholesale campaign is a joke. Is it really not that obvious? I don't even think he is qualified to be president. I think it's just a distraction.
reply about 4 hours
Pink_Cool_Girl
He obviously does. 
reply about 5 hours