(a)
Interpretation:
The yellow colored substance is to be identified as a semimetal
Concept introduction:
The elements which are brittle, exists in powdery solids or gases form, can gain electrons easily and have properties opposite to that of metals are classified as nonmetals.
Metalloids or semimetals have both the properties of metals as well as non-metals. Their physical properties resemble that of metals and chemical properties resemble that of non-metals.
A compound is a substance which consists of two or more elements in definite proportion
(b)
Interpretation:
The gray colored substance is to be identified as a semimetal
Concept introduction:
The elements which are brittle, exists in powdery solids or gases form, can gain electrons easily and have properties opposite to that of metals are classified as nonmetals.
Metalloids or semimetals have both the properties of metals as well as non-metals. Their physical properties resemble that of metals and chemical properties resemble that of non-metals.
A compound is a substance which consists of two or more elements in definite proportion bonded by chemical bonds. The elements do not essentially show their characteristics properties in a compound.
(b)
Interpretation:
The orange colored substance is to be identified as a semimetal
Concept introduction:
The elements which are brittle, exists in powdery solids or gases form, can gain electrons easily and have properties opposite to that of metals are classified as nonmetals.
Metalloids or semimetals have both the properties of metals as well as non-metals. Their physical properties resemble that of metals and chemical properties resemble that of non-metals.
A compound is a substance which consists of two or more elements in definite proportion bonded by chemical bonds. The elements do not essentially show their characteristics properties in a compound.
Want to see the full answer?
Check out a sample textbook solution
Chapter 5 Solutions
Introductory Chemistry: Concepts and Critical Thinking (8th Edition)
- Which of the following metals is the most chemically reactive? : Sr, Mn, Be, or Cr Which of the following nonmetals is the least chemically reactive? : N, P, B, or Clarrow_forward(b) A new element, "X", is discovered and found to have 2 electrons in its outer level. Is X a metal or non-metal? Predict the formula its ion would have in any ionic compounds it forms.arrow_forwardWhich of the following pairs react to form ioniccom-pounds: (a) Cl and Br; (b) Na and Br; (c) P and Se; (d) H and Ba?.arrow_forward
- Draw the energy diagram of the reaction: Li(s) + ½F2 → LiF(s). Enthalpy (kJ/mol) Li(s) → Li(g) +155.2 Li(g) → Li+(g) + e +520 ½F2 →F(g) +75.3 F(g) + e → F-(g) -3arrow_forwardWrite formulas for ionic compounds. (a) What is the formula of the ionic compound expected to form between the elements sodium and fluorine? (b) What is the formula of the compound formed between the ions Co²+ and SO₂²? (c) What ions make up the ionic compound Zn(CN)₂? Cation formula Anion formulaarrow_forward2. A charged particle is caused to move between two electrically charged plates, as shown here. +) (a) Why does the path of the charged particle bend? (b) What is the sign of the electrical charge on the particle? (c) As the charge on the plates is increased, would you expect the bend- ing to increase, decrease, or stay the same? (d) As the mass of the particle is increased while the speed of the particles remains the same, would you expect the bending to increase, decrease, or stay the same?arrow_forward
- Chlorine reacts with oxygen to form Cl2O7. (a) What is the name of this product (see Table 2.6)? (b) Write a balanced equation for the formation of Cl2O7(l) from the elements. (c) Under usual conditions, Cl2O7 is a colorless liquid with a boiling point of 81℃. Is this boiling point expected or surprising? (d) Would you expect Cl2O7 to be more reactive toward H+(aq) or OH− (aq)? Explain. (e) If the oxygen in Cl2O7 is considered to have the -2 oxidation state, what is the oxidation state of the Cl? What is the electron configuration of Cl in this oxidation state?arrow_forwardFor salt (NaCl) and sugar (sucrose, C12H11O11) added to water, draw pictures of what you expect the atoms, ions and/or molecules to look like after each substance has been added to water.arrow_forwardWrite a balanced equation for the following by inserting the correct coefficients (if a coefficient = 1, enter "1" in the provided box). Ca3(PO2() + SiO:() +C) – C(s) → CaSiO3(1) + || CO(g) + +P.()arrow_forward
- The first laboratory experiments to produce compounds containing noble gas atoms aroused great excitement, not because the compounds might be useful but because they demonstrated that the noble gases were not completely inert. Since that time, however, important uses have been found for a number of noble gas compounds. For example, xenon difluoride, XeF2, is an excellent fluorinating agent (a substance that adds fluorine atoms to other substances). One reason it is preferred over certain other fluorinating agents is that the products of its fluorinating reactions are easily separated from the gaseous xenon. The following unbalanced equation represents one such reaction: S3O9 + XeF2 → S2O6F2 + Xe Balance this equation. What is the minimum number of moles of XeF2 necessary to react with 4 moles of S3O9? What is the maximum number of moles of S2O6F2 that can form from the complete reaction of 4 moles of S3O9 and 7 moles of XeF2? How many moles of xenon gas form from the complete…arrow_forwardDifferentiate between metal and non-metal on the basis of their chemical properties.arrow_forwardWhich of the following sets contains an ionic compound, a molecular compound, and an acid, in that order? (A) Al2O3, B2O3, CH3OH; (B) CaCl2, NH4Cl, HCl; (C) CH3F, COCl2, HOCl; (D) CoCl2, COCl2, HClO2.arrow_forward
Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage Learning