In the table below, there are descriptions of an experiment on samples of three different chemical elements. Decide whether the element is a metal or nonmetal,if you can. If there is not enough information to decide, choose can't decide in the third column.elementdescriptionmetal or nonmetal?Ometal1Element I is a shiny silvery-gray solid. A small cube of it is put into aceramic crucible and heated strongly. It melts about not far above roomnonmetal(can't decide)temperature.metalElement 2 is a shiny silvery-gray solid. A 5 cm x 5 cm square of it, onlyI mm thick, is pressed into a dish-shaped mold under high pressure.When the sample is removed, it has become lighter in color and now hasthe shape of the mold.nonmetal(can't decide)metalElement 3 is a hard dark-red solid. A 10. g cube of it is tapped lightly witha small hammer. One corner of the cube breaks off into 3-4 pieces and acollection of small bits.nonmetal(can't decide)23

Properties of metal • Lustrous • High melting point and boiling point. • Malleable - They can be…

In the table below, there are descriptions of an experiment on samples of three different chemical elements. Decide whether the element is a metal or nonmetal, if you can. If there is not enough information to decide, choose can't decide in the third column. element description metal or nonmetal? Ometal Element 1 is a shiny silvery-gray solid. A small cube of it is put into a ceramic crucible and heated strongly. It melts about not far above room temperature. nonmetal (can't decide) metal 2 Element 2 is a shiny silvery-gray solid. A 5 cm x 5 cm square of it, only I mm thick, is pressed into a dish-shaped mold under high pressure. When the sample is removed, it has become lighter in color and now has the shape of the mold. nonmetal (can't decide) metal Element 3 is a hard dark-red solid. A 10. g cube of it is tapped lightly with a small hammer. One corner of the cube breaks off into 3-4 pieces and a collection of small bits. nonmetal (can't decide) 3

In the table below, there are descriptions of an experiment on samples of three different chemical elements. Decide whether the element is a metal or nonmetal, if you can. If there is not enough information to decide, choose can't decide in the third column. element description metal or nonmetal? Ometal Element 1 is a shiny silvery-gray solid. A small cube of it is put into a ceramic crucible and heated strongly. It melts about not far above room temperature. nonmetal (can't decide) metal 2 Element 2 is a shiny silvery-gray solid. A 5 cm x 5 cm square of it, only I mm thick, is pressed into a dish-shaped mold under high pressure. When the sample is removed, it has become lighter in color and now has the shape of the mold. nonmetal (can't decide) metal Element 3 is a hard dark-red solid. A 10. g cube of it is tapped lightly with a small hammer. One corner of the cube breaks off into 3-4 pieces and a collection of small bits. nonmetal (can't decide) 3

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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3 Complete the following table for the elements that are listed. If you have a full display of elements, check to see if your predictions are correct. Element Metal/Metalloid/ Prediction: Shiny/Dull Correct? Yes/No Nonmetal Chromium Shiny Yes Gold M Shiny Yes Lead M Shiny Yes Cadmium M Shiny Yes Silicon ML Shiny Yes C. The Atom Symbol of Element Name of Atomic Mass Protons Neutrons Electrons Element Number Number Iron 30 Aluminum 14 Potassium 20 Bromine 45 Gold 118
5. Use the internet to figure out which of the following METAL ELEMENTS is most likely the mystery METAL ELEMENT. Explain HOW you came to your conclusion! Zinc Magnesium Aluminum
YouTube Maps O ATOMS, IONS AND MOLECULES Finding isotope mass or natural abundance from atomic mass There are only two naturally-occuring stable isotopes of lithium. The mass and natural abundance of one of them is listed in the table below. Use whatever data you need from the ALEKS Periodic Table to determine the identity, mass and natural abundance of the other isotope, and complete the table. Round your entry for mass to 4 significant digits and your entry for natural abundance to 4 significant digits. isotope 6 Li Dri mass (amu) 6.0151 0 natural abundance 7.59% [% x10 X 0/5 Ś Olivia V alb
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Lithium is composed of two isotopes and the average atomic mass calculation is shown. Predict the number we should use for the ? to complete the set up. Li-6 Li-7 Mass 6.015 7.016 X Abundance (DECIMAL!!) 0.0759 7 = 0.457 6.483 6.940 amu 3 6.94
Find the average atomic mass (atomic weight) for lithium on the periodic table. There are only two significant isotopes of lithium, Li-6 and Li-7. Which is the most abundant isotope ? Not a calculation.
1- For each of the following atoms, calculate the number of protons and neutrons in the nucleus and the number of electrons outside the nucleus (assume neutral atoms). element number of number of number of electrons mass number (A) symbol 126C protons (Z) neutrons 12 10 12 10 14 27 10 23,1Na 11 17 18 2- Calculate the atomic mass to four significant figures for carbon, given the following data: Isotope Exact Atomic Mass (amu) 12.00000 13.00335 Abundance in Nature (%) 98.89 1.110 12C 13C
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Mendeleev left empty spaces in his periodic table for elements he suspected existed but had yet to be discovered. He left no spaces for the Noble gases that we now have in the modern periodic table. Give at least two reasons on why this group was challenging to discover, based on what we now know about the atom including sub-atomic particles. Mendeleev had a group VIII but they are NOT the noble gases.