Get help now

Triple Science Homework

  • Pages 2
  • Words 298
  • Views 165
  • dovnload

    Download

    Cite

  • Pages 2
  • Words 298
  • Views 165
  • Academic anxiety?

    Get original paper in 3 hours and nail the task

    Get your paper price

    124 experts online

    Triple Science Homework (Pg 197) Copy and complete using the words below: Discovered, Gaps, Mendeleev, Mass, Periodic, Properties, Newlands The chemical elements can be arranged in a Periodic table. Within the table, elements with similar Mass are placed together in groups. Like other chemists, such as Newlands, Mendeleev listed elements in order of Properties but he realised that he need to leave Gaps for elements that had not yet been Discovered. Why did Newlands’ fellow scientists refuse to accept his ‘law of octaves’? The chemical society refused to publish his work and thought his ideas were unreasonable and useless.

    How did Mendeleev persuade any doubters that his periodic table really was a useful tool in understanding the chemical elements? Mendeleev predicted the discovery of other elements and left space for these new elements, namely silicon,aluminium, and boron, pointed out that some of the atomic weights being used at the time were incorrect and provided for variance from atomic weight order. (Pg 199) Copy and complete using the words below: Outer, Atomic, Electrons, Shell, Group, Number The periodic table shows elements arranged in order of their Atomic number.

    Elements in a Group all react in similar ways because they have the same number of Electrons in their outer Shell. The group Number tells us the number of electrons in the Outer shell. In the periodic table, how does the number of metallic elements compare with the number of non-metal elements? The number of metals is more than twice the number of non-metals. Explain why sodium is more reactive than lithium. Because the metals of Group 1 become more reactive as we go down the group. Explain why fluorine is more reactive than chlorine. Chlorine is a larger atom than fluorine so it gains the electrons needed to fill its outermost shell.

    This essay was written by a fellow student. You may use it as a guide or sample for writing your own paper, but remember to cite it correctly. Don’t submit it as your own as it will be considered plagiarism.

    Need a custom essay sample written specially to meet your requirements?

    Choose skilled expert on your subject and get original paper with free plagiarism report

    Order custom paper Without paying upfront

    Triple Science Homework. (2017, Jan 05). Retrieved from https://graduateway.com/triple-science-homework/

    Hi, my name is Amy 👋

    In case you can't find a relevant example, our professional writers are ready to help you write a unique paper. Just talk to our smart assistant Amy and she'll connect you with the best match.

    Get help with your paper
    We use cookies to give you the best experience possible. By continuing we’ll assume you’re on board with our cookie policy