be oimilar to olicon. 3. Look up the average atomic masses and the three properties of silicon, Si, germanium, Ge, tin, Sn, phosphorus, P, antimony, Sb, sulfur, S, and selenium, Se. a. Organize these elements into rows and columns. b. List two properties that elements in each column have in common.

be oimilar to olicon. 3. Look up the average atomic masses and the three properties of silicon, Si, germanium, Ge, tin, Sn, phosphorus, P, antimony, Sb, sulfur, S, and selenium, Se. a. Organize these elements into rows and columns. b. List two properties that elements in each column have in common.

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter4: Chemical Foundations: Elements, Atoms, And Ions

Section: Chapter Questions

Problem 10ALQ: These questions concern the work of J. J. Thomson: From Thomson’s work, which particles do you think...

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These questions concern the work of J. J. Thomson: From Thomson’s work, which particles do you think he would feel are most important in the formation of compounds (chemical changes) and why? Of the remaining two subatomic particles, which do you place second in importance for forming compounds and why? Come up with three models that explain Thomson’s findings and evaluate them. To be complete you should include Thomson’s findings.
2. Which of the following mixtures can be separated by handpicking? * A. solution B. homogeneous C. heterogeneous D. both B and C 3. In your drawer, several solids like thumbtacks, paper clips and pieces of papers are scattered. How will you separate the thumbtacks and paper clips from the pieces of papers? * ) A by handpicking () B. by magnetizing () C. by decantation () D. both A and B 4. Which of the following cannot be separated by magnetizing? * ( A. pebbles and paper ( B. pebbles and paper clips () C. pebbles and staple wires () D. water and pieces of iron
17. Chemistry is concerned about a. the properties and interactions of matter C. and energy the properties of the subtances composing the matter b. a. 1.34 b. 1.62 18. Ethyl alcohol has a chemical formula of C₂H5OH. How many moles are there in 125g of ethyl alcohol. C. 2.45 d. 2.71 19. Which statement is true? a. b. Atoms and elements are the same concept Some matter consists of atoms a. 1,1,1 b. 2,1,2 a. b. 21. Which element is a metalloid? d. 20. Determine the coefficients (x,y,z) that balance/s the equation. cobalt boron the earth's physical structure and substance Both a and b C. Oxygen atoms combine to form a compound d. Both a and c (x)O₂+(y) PCl3→(z) POCl3 1,2,2 Answer is not among the choices C. d. C. d. selenium Both b abd c
a. What is the mass of sulphur that contains the same number of atoms as 8.1 g of magnesium? (Relative atomic masses: Mg = 24.3, S = 32.1) A. 5.35 g B. 10.7 g C. 16.0 g D. 21.4 g b. If 2.4 g of oxygen contains x atoms, how many atoms are there in 12.0 g of helium (He)? (Relative atomic masses: He = 4.0, O = 16.0) 10x 20x 30x 40x c. Which of the following samples of gases contains the greatest number of atoms? (Relative atomic masses: H = 1.0, C = 12.0, Cl = 35.5, Ar = 40.0) 10.0 g of Cl2 11.0 g of Ar 12.0 g of HCl 13.0 g of C2H6
An atom of copper has a mass about four times greater than that of an atom of oxygen. What choice makes the correct comparison of the relative numbers of copper and oxygen atoms in 1,000 g of each element? a. There are one thousand times as many copper atoms as oxygen atoms. b. There are one thousand times as many oxygen atoms as copper atoms. c. There are four times as many copper atoms as oxygen atoms. d. The number of copper and oxygen atoms is the name. e. There are four times as many oxygen atoms as copper atoms
Physical Science Period 3 ← CO Login D World War Il for Kid..... IA Physical Science Final Exam Question 25 Tools - Question 25 | IA Physical Scienc x testing.illuminateed.com/assessment/6390dbed8bfg Google Play Music..... ▸canx4Lgang A B ✔Question 25 Which of the following formula and chemical nan combin tions is correctly shown? C D Q Zoom X N₂O₂; nitrogen dioxide N₂O; dinitrogen pentoxide Ca₂P; dicalclum diphosphide PCI; phosphorus tetrachloride 2022&uminate Education, Inc. 0
a. How many grams of S are present in 4.41 grams of sulfur hexafluoride? Mass= gs b. How many grams of sulfur hexafluoride contain 1.45 grams of F? Mass= g sulfur hexafluoride
6. How are the f-block elements otherwise called? A. inner trinsition metals b. lanthanide series Wan ie reptesentative elements d. transition metals For items 7-15, refer to this section of the periodic table. C. 18 H. 2. 13 14 15 16 17 He Li Be B No Mg Al Si K Ca Ga Ge As Se Br N O Ne Tichion J SOD 14 Amesde S ALC N E OSP.AN S Ar Kr 7 Which statement is correct? a Argon is a halogen. b. Bromine is a noble gas. C Calcium is an alkali metal. d. Magnesium is an alkaline earth metal. Which of the following describes the elements in the periodic table? Argon and krypton belong to the same period. S.OPN 15 Which er 8. a.
A certain mass of carbon reacts with 455.9 g of oxygen to form carbon dioxide. ________ grams of oxygen would react with that same mass of carbon to form carbon monoxide, according to the law of multiple proportions.
1.All atoms of a given element have the same ______.mass number. c. number of nucleons.number of neutrons. d. number of protons. 2. Which describes a substance that is in the solid state? A.Its particles can flow past one another. B.It can be compressed into a smaller volume. C.It takes the shape of its container.D. Its particles of matter are close together 3.In order to decide whether a property is chemical or physical, you must know whether_______.A.measuring the property changes mass or energy B. chemical or physical changes occur when the property is measured C. the property involves matter or energy D.the property is intrinsic or extrinsic 4.The specific volume of a substance is the volume per gram of substance. Specific volume is an example of _________.a physical, intensive property c. a physical, extensive property. 5.A liquid cannot be separated into its components through physical means but can be decomposed through electrolysis or by applying electricity.…
a. For element radium, give the chemical symbol, atomic number, and group number. Chemical symbol Atomic number = Group number = b. Specify whether element radium is a metal, nonmetal, or metalloid. = metal nonmetal O metalloid c. For element fluorine, give the chemical symbol, atomic number, and group number. Chemical symbol Atomic number = metal nonmetal metalloid = Group number = d. Specify whether element fluorine is a metal, nonmetal, or metalloid.
You have an unknown element consisting of two Isotopes, one with mass - 36.9659 amu (24.22%), and one with mass = 34.9688 amu (75.78%). a. Use the weighted average calculation to obtain the atomic mass (welghted average). Show your calculations. Give final answer in 4 significant digits. b. What is the name of the element? c. What is the atomic symbol? d. Draw a similar table and fill In the table for the two isotopes. Please write Isotopes in the following format: Isotope Atomic Number Atomic Mass (no of Protons of Electrons of Neutrons (no decimal