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QUESTION 16 Conductivity may be the best way to determine if a substance has ionic, covalent...
i need help please : Types of compounds Argumentation and Documentation Classify each substance as metallic,...
i
need help please : Types of compounds
Argumentation and Documentation Classify each substance as metallic, ionic, molecular or covalent network based on your experimental results and further observations Part I. Testing Conductivity of Substances at Room Temperature Two substances were electrically conducting solids. The only classifications for substances that conduct electricity as solids are metallic or covalent network solids. Use the malleability property of metals to determine the classification of the two substances. Part II. Testing Conductivity of Solutions...
1) Based on their position on the periodic table, which bond do you expect to be...
1) Based on their position on the periodic table, which bond do you expect to be the most polar? Al---P Al---S Be--Cl P--Cl 2) Each scenario describes the properties of a substance. Based on the properties determine if the substance is a Non-acid/Non-base covalent substance, metallic substance, Acid or base covalent substance, or Ionic Substance. Substance A: Melts at 520 degrees celsius. Decomposes before it can boil. Does not conduct electricity in the solid or liquid state or in aqueous...
Name CHM121 E14 CLASSIFICATION OF CHEMICAL SUBSTANCES If substances are only classified as ionic, macromolecular, metallic,...
Name CHM121 E14 CLASSIFICATION OF CHEMICAL SUBSTANCES If substances are only classified as ionic, macromolecular, metallic, and molecular, in which, IF ANY, categories are ALL the members: 2) a) Soluble in water b) Electrical conductors when melted c) Insoluble in all common solvents d) Solids at room temperature Classify each substance below into one of the following seven categories: ionic, ionic with waters of hydration, ionic-molecular, ionic-molecular with 3) a) A white solid melts at 250°C without decomposing. The liquid...
Hi, I need to double check my homework answer, need help with this. My answer is...
Hi, I need to double check my homework answer, need help with this. My answer is in bold: A) Which solids may exist in the solid state at room temperature? Ionic Solids, Molecular Solids, Metallic Solids, or Covalent Network Solids B) Which types of solids conduct electricity as pure solids (not aqueous)? Molecular Solids, Ionic Solids, Metallic Solids, or None of these C) What does the flat part of heating curves indicate? Gaseous states, Liquid states, Solid States, Phase transitions...
t in the orams ts. Conductivity Chem 113 Reading Assignment 1. Read sections 8.2-8.3 in your...
t in the orams ts. Conductivity Chem 113 Reading Assignment 1. Read sections 8.2-8.3 in your lecture text. 2. Review Sample Exercise 8.4 on pages 326-327 of your lecture text. Introduction Properties of Solutions: Electrolytes and Non-Electrolytes In this experiment, you will discover some properties of strong electrolytes, weak electrolytes, and non- electrolytes by observing the behavior of these substances in aqueous solutions. You will determine these properties using a conductivity Probe. When the probe is placed in a solution...
Compound Conductivity (S/m) Type of Compound Non-, weak or strong electrolyte NaCl 43.00(s/m) Na2CO3 68.53(s/m) NaHCO3...
Compound Conductivity (S/m) Type of Compound Non-, weak or strong electrolyte NaCl 43.00(s/m) Na2CO3 68.53(s/m) NaHCO3 33.24(s/m) KNO3 37.43(s/m) NH4Cl 56.92(s/m) NH3 0.82(s/m) HCl 39.29(s/m) HCN 0.01(s/m) HAc (HC2H3O2) 0.54(s/m) When an ionic solid dissolves in water, water molecules attract the ions causing them to dissociate or come apart. The resulting dissolved ions are electrically charged particles that allow the solution to conduct electricity. Write balanced chemical equations that represent the dissociation or ionization of all compounds in the table...
Separating a Mixture, Recrystallization, pre-lab assignment could you also explain why you chose that substance for...
Separating a Mixture, Recrystallization, pre-lab
assignment
could you also explain why you chose that substance for the empty
spaces and question marks
EXPERIMENT 4 Pre-Lab Assignment Separating a Mixture, Recrystalliration Name Date 1. Complete the following flowchart which shows how to separate a mixture of sand, sodium chloride and acetanilide. Notice that after a separation process (a down arrow) the filtered solids are shown on the left and the filtrate (the liquid) is shown on the right. The terminal step...
Question 1 (1 point) Using the solubility curve, at which temperature do KCl and KCIO, have...
Question 1 (1 point) Using the solubility curve, at which temperature do KCl and KCIO, have the same solubility? Solubility Curve Grams of solute/100g H30 to .- 30. 0 10 70 80 90 100 20 30 40 50 60 Temperature (°C) O 93°C 56°C O 85°C 0750 Previous Page Next Page Page 2 of 24 Question 2 (1 point) Saline (salt) solution is 0.9% by mass which is similar to tears, blood, and other body fluids. Which of the following...
e. 18 Test Your Knowledge MULTIPLE CHOICE: Choose the one best answer. 1. Each element has...
e. 18 Test Your Knowledge MULTIPLE CHOICE: Choose the one best answer. 1. Each element has its own characteristic atom in which a. the atomic mass is constant. b. the atomic number is constant. c. the mass number is constant. d. Two of the above are correct. e. All of the above are correct. 2. Which of the following is not a trace element in the human body? a. iodine b. zinc c. iron d. calcium e. fluorine 3. A...
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question....
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. 00 OA Figure 2.1 Using Figure 2.1, match the following: 1) Tertiary (protein) structure, 2) Monosaccharide 3) Nucleotide 4) Lipid 5) Functional protein 6) Polymer 7) Polysaccharide TRUE FALSE. Write T if the statement is true and F if the statement is false, 8) Final preparation for cell division is made during the cell life cycle subphase called G2. SHORT ANSWER. Write the word...
i
need help please : Types of compounds
Argumentation and Documentation Classify each substance as metallic, ionic, molecular or covalent network based on your experimental results and further observations Part I. Testing Conductivity of Substances at Room Temperature Two substances were electrically conducting solids. The only classifications for substances that conduct electricity as solids are metallic or covalent network solids. Use the malleability property of metals to determine the classification of the two substances. Part II. Testing Conductivity of Solutions...
Name CHM121 E14 CLASSIFICATION OF CHEMICAL SUBSTANCES If substances are only classified as ionic, macromolecular, metallic, and molecular, in which, IF ANY, categories are ALL the members: 2) a) Soluble in water b) Electrical conductors when melted c) Insoluble in all common solvents d) Solids at room temperature Classify each substance below into one of the following seven categories: ionic, ionic with waters of hydration, ionic-molecular, ionic-molecular with 3) a) A white solid melts at 250°C without decomposing. The liquid...
t in the orams ts. Conductivity Chem 113 Reading Assignment 1. Read sections 8.2-8.3 in your lecture text. 2. Review Sample Exercise 8.4 on pages 326-327 of your lecture text. Introduction Properties of Solutions: Electrolytes and Non-Electrolytes In this experiment, you will discover some properties of strong electrolytes, weak electrolytes, and non- electrolytes by observing the behavior of these substances in aqueous solutions. You will determine these properties using a conductivity Probe. When the probe is placed in a solution...
Separating a Mixture, Recrystallization, pre-lab
assignment
could you also explain why you chose that substance for the empty
spaces and question marks
EXPERIMENT 4 Pre-Lab Assignment Separating a Mixture, Recrystalliration Name Date 1. Complete the following flowchart which shows how to separate a mixture of sand, sodium chloride and acetanilide. Notice that after a separation process (a down arrow) the filtered solids are shown on the left and the filtrate (the liquid) is shown on the right. The terminal step...
Question 1 (1 point) Using the solubility curve, at which temperature do KCl and KCIO, have the same solubility? Solubility Curve Grams of solute/100g H30 to .- 30. 0 10 70 80 90 100 20 30 40 50 60 Temperature (°C) O 93°C 56°C O 85°C 0750 Previous Page Next Page Page 2 of 24 Question 2 (1 point) Saline (salt) solution is 0.9% by mass which is similar to tears, blood, and other body fluids. Which of the following...
e. 18 Test Your Knowledge MULTIPLE CHOICE: Choose the one best answer. 1. Each element has its own characteristic atom in which a. the atomic mass is constant. b. the atomic number is constant. c. the mass number is constant. d. Two of the above are correct. e. All of the above are correct. 2. Which of the following is not a trace element in the human body? a. iodine b. zinc c. iron d. calcium e. fluorine 3. A...
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. 00 OA Figure 2.1 Using Figure 2.1, match the following: 1) Tertiary (protein) structure, 2) Monosaccharide 3) Nucleotide 4) Lipid 5) Functional protein 6) Polymer 7) Polysaccharide TRUE FALSE. Write T if the statement is true and F if the statement is false, 8) Final preparation for cell division is made during the cell life cycle subphase called G2. SHORT ANSWER. Write the word...
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