The whole‐number ratios of combining masses in chemical reactions can be readily explained knowing that the basic unit of all elements is the atom, which originally meant an indivisible particle. Quiz: Introduction to Oxidation-Reduction Reactions.Introduction to Oxidation-Reduction Reactions.Quiz: Heat Capacities and Transformations.Quiz: Introduction to Organic Compounds.Quiz: Compounds with Additional Elements.
Have fun and share your ideas with a friend or family member. If you become a scientist one day and happen to discover a new element, what would you name it? Would you try to name it after yourself? Or would you choose some other criterion? Give it some thought and come up with a list of possible names you might use for a brand-new element one day.Do all the elements look like you thought they would? Do any of them surprise you?
Does reading the names of different elements make you WONDER what they look like? Check out this fascinating Pictorial Periodic Table of Elements to see pictures of the different elements. All of those elements can get a bit confusing after a while.Then, write a paragraph describing these elements for a friend or family member. Choose at least three elements you're not familiar with and learn more about them. Simply hover over an element's symbol to learn more in-depth information about it. There's no better way to get acquainted with the periodic table of elements than by jumping online to check out this cool interactive version of the periodic table.Will you find the next element? What would you name it?Īre you ready to explore the periodic table in greater detail? Be sure to explore the following activities with a friend or family member:
Is the periodic table complete today? Not necessarily! Oganesson was added to the table in 2006, and any new elements will be added as they’re found. This helps scientists separate different types of metals and gases. The elements are also grouped by their chemical properties. An element’s location can tell you about the structure of its atom. You can learn a lot about the elements by reading the periodic table. The symbol for Potassium is “K,” and Iron is “Fe.” Can you guess what element has the symbol “Au”? It’s gold! Sometimes, the symbols aren’t as straightforward. For example, “O” means Oxygen, and “N” means Nitrogen. In most cases, the symbol matches the element’s name. It starts with a “1” for Helium and goes all the way to “118” for Oganesson.Įach element also has its own symbol. That’s the number of protons in an atom of each element. Today, elements on the periodic table are organized according to their atomic number. As new elements were discovered and named, they were added to the table. When Mendeleev first made the periodic table in 1869, it included 64 elements. People have come a long way from the original four elements! How do scientists keep them all straight? A Russian chemist named Dmitri Mendeleev came up with a way to organize the elements. You may recognize some of them! Have you ever heard of oxygen, helium, or carbon? Those are all elements. Each different type of atom is an element. And those atoms can be classified by type. Today, we know everything in the world is made up of atoms. They realized objects in the universe were also made of wood, ether, and metal.Įventually, people started looking at things more closely. As time went on, others added to this list. Those elements were air, fire, water, and earth. The ancient Greek thinker Aristotle believed that four elements made up the world. Years ago, ancient people had their own ideas about what made up the universe. Thanks to modern chemistry, we can learn what things are made of. What makes flowers? How about clouds? What makes the fork you eat? Or the food on your plate? Have you ever WONDERed what the world is made of? Look around you.
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