Hydrogen is the first element on the periodic table. It is a very light gas with unique properties. Hydrogen has a low density and is colorless, odorless, and tasteless. It is highly flammable and can react explosively with oxygen. Hydrogen has many important uses. It is used as a fuel ...
Create a scatterplot of the first 30 elements on the Periodic Table. Place a point to represent each element's atomic number and atomic mass.Which equation best shows the relationship between atomic number and mass? ( ) A. m=n B. m=n+2 C. m=2n D. m=n÷ 2...
Hydrogen is the first element in the periodic table. It is a very light gas with unique properties. Hydrogen has a low density and is colorless, odorless, and tasteless. It is highly flammable and can react explosively with oxygen. Hydrogen is found in many different forms. It is present ...
Take this quiz on the first 20 elements of theperiodictable. How well do you understand the periodic table and what it involves? Can you correctly name the first 20 chemical elements, their atomic numbers, electron configurations, and chemical properties? Let's test your knowledge! You can als...
If you take a chemistry class there is an excellent chance you will be required to memorize the names and order of thefirst few elementsof theperiodic table. Even if you don't have to memorize the elements for a grade, it is helpful to be able to recall that information rather than loo...
What is the first element on the periodic table in studying Chemistry? Which of the first 20 elements in the periodic table are metal and which are nonmetals? What is the name of the Group 1 elements in the periodic table? What are the elements found in an A group (groups 1, 2...
When the first element of the periodic table, hydrogen (H), reacts with oxygen (O2), it forms water (H2O). Step 2: Analyze the Properties of WaterWater is a unique compound that exists in a solid state (ice) and a liquid state (water). Ice floats on water because its density is...
dioxide, without which there would not be a trace of life on this planet. The little that I know about my ancestors presents many similarities to these gases. Not all of them were materially inert, for that was not granted them. On the contrary, they were—o r had to be—quit e ...
Well there’s some big news about this special table but first remember that the periodic table is used for all the elements(元素) or things that make up our world. Elements are all around us. Iron is one of the most common elements found on the earth. You probably know the element ...
a5. when the periodic table was first introduced in 1869-70 by the German chemist Lothar Meyer and (independedtly) the Russian Dmitri Mendeleyev, one third of the naturally occurring chemical elements had not yet been discovered, and both chemists were farsighted enough to leave gaps where ...