#1 #2 Use the pictures above to answer questions 12 & 13. #3 12 Which picture or pictures best show a pure element? A. Picture #1 & Picture #2 B. Picture #1 only 13 Which picture shows a pure compound? A. Picture #1 & Picture #2 B. Picture #1 only C. Picture #3 & Picture #4 D. Picture #4 only C. Picture #3 & Picture #4 D. Picture #4 only #4 14 Which is NOT a characteristic of a solid? A. Fixed shape and fixed volume. B. Atoms or molecules very closely packed together in a regular arrangement. C. The atoms or molecules vibrate at different rates at different temperatures. D. The free surface is a gravity surface, and always horizontal to the Earth's surface. What is a solid substance in which the atoms and molecules are in a repeating 3- 15 dimensional arrangement or bonding pattern throughout? A. Crystalline solids B. Amorphous solids C. Ambidextrous solids D. Marl solids What is a solid substance in which the atoms and molecules are randomly or 16 inconsistently arranged throughout? There is no repeating pattern or arrangement. A. Crystalline solids C. Ambidextrous solids B. Amorphous solids D. Marl solids

#1 #2 Use the pictures above to answer questions 12 & 13. #3 12 Which picture or pictures best show a pure element? A. Picture #1 & Picture #2 B. Picture #1 only 13 Which picture shows a pure compound? A. Picture #1 & Picture #2 B. Picture #1 only C. Picture #3 & Picture #4 D. Picture #4 only C. Picture #3 & Picture #4 D. Picture #4 only #4 14 Which is NOT a characteristic of a solid? A. Fixed shape and fixed volume. B. Atoms or molecules very closely packed together in a regular arrangement. C. The atoms or molecules vibrate at different rates at different temperatures. D. The free surface is a gravity surface, and always horizontal to the Earth's surface. What is a solid substance in which the atoms and molecules are in a repeating 3- 15 dimensional arrangement or bonding pattern throughout? A. Crystalline solids B. Amorphous solids C. Ambidextrous solids D. Marl solids What is a solid substance in which the atoms and molecules are randomly or 16 inconsistently arranged throughout? There is no repeating pattern or arrangement. A. Crystalline solids C. Ambidextrous solids B. Amorphous solids D. Marl solids

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter9: Chemical Quantities

Section: Chapter Questions

Problem 57QAP: Hydrogen peroxide is used as a cleaning agent in the treatment of cuts and abrasions for several...

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(For Exercises 4546) Solutions containing nickel(II) ion are usually bright green in color. When potassium hydroxide is added to such a nickel(II) solution, a pale-green fluffy solid forms and settles out of the solution. The fact that a reaction takes place when potassium hydroxide is added to a solution of nickel(II) ions is an example of a properly. . The fact that a solution of nickel(II) ion is bright green is an example of a property.
Sketch the apparatus commonly used for simple distillation in the laboratory, identifying each component.
Why would a chemist find fault with the phrase “pure orange juice”?
Hydrogen peroxide is used as a cleaning agent in the treatment of cuts and abrasions for several reasons. It is an oxidizing agent that can directly kill many microorganisms: It decomposes upon contact with blood, releasing elemental oxygen gas (which inhibits the growth of anaerobic microorganisms); and it foams upon contact with blood, which provides a cleansing action. In the laboratory, small quantities of hydrogen peroxide can be prepared by the action of an acid on an alkaline earth metal peroxide, such as barium peroxide. BaO2(s)+2HCl(aq)H2O2(aq)+BaCl2(aq) What amount of hydrogen peroxide should result when 1.50 g of barium peroxide is treated with 25.0 mL of hydrochloric acid solution containing 0.0272 g of HCI per mL?
Correct the following statements.a. An element is a combination of two or more compounds.b. When a small amount of sugar is completely dissolved in water, a heterogeneous solution is formed.
B. Match each diagram with its correct description. Diagrams can only be used once. A 1. Pure Element - only one type of atom present. 2. Mixture of two elements-two types of uncombined atoms present. 3. Pure compound- only one type of compound present. 4. Mixture of two compounds-two types of compounds present. 5. Mixture of a compound and an element.
8. Fill in the following boxes. . HO. heat HO. SOC2 NaN3 1. he t 2. H2C 2 Mel +
of 1. Me 2. NaH, DMF CI, py, CH2CI2 Br OEt 3. H20, H*, heat 4. Cp2LaNMe2, PhH NH2
2 questions. #4: Asking for Colbalt and Nickel.
J 1. NaOH 2. CH3CH₂COCI 1. Br₂, NaOH 2. H¹, H₂O H + I
Calculate the mass of Na in 80.0 g NaCl.A. 31.5 gB. 6.2 gC. 40.0 gD. 1.9 g
Which statement is incorrect? A. All molecules are compounds but not all compounds are molecules. (Semua molekul adalah sebatian tetapi tidak semua sebatian adalah molekul.) B. A molecule is formed when two or more atoms join together chemically. (Molekul dibentuk apabila dua atau lebih atom bergabung bersama secara chemical.) C. A compound is a molecule that contains at least two different elements. (Sebatian adalah molekul yang mengandungi sekurang-kurangkan dua unsur yang berbeza) D. All compounds are molecules but not all molecules are compounds. (Semua sebatian adalah molekul tetapi tidak semua molekul adalah sebatian.)