National 5 - Deans Community High School
... produces oxygen slowly. When a cobalt salt is present in the original mixture, the solution is pink. On warming, oxygen is released rapidly and the colour changes to green. As the effervescence subsides, the colour changes to pink again. (a) Explain these changes in terms of catalysis. (b) What kind ...
... produces oxygen slowly. When a cobalt salt is present in the original mixture, the solution is pink. On warming, oxygen is released rapidly and the colour changes to green. As the effervescence subsides, the colour changes to pink again. (a) Explain these changes in terms of catalysis. (b) What kind ...
CHEM 101 Fall 09 Final Exam (a)
... d. 2.30 × 107 e. 1.31 × 10-9 13. Which answer shows all possible values of the second quantum number when n = 3? a. l = 0 b. l = 0, 1 c. l = 0, 1, 2 d. l = 0, 1, 2, 3 e. l = 0, 1, 2, 3, 4 14. The d orbitals occur in groups of __________ and hold up to __________ electrons. a. 3, 6 b. 4, 8 c. 5, 10 d ...
... d. 2.30 × 107 e. 1.31 × 10-9 13. Which answer shows all possible values of the second quantum number when n = 3? a. l = 0 b. l = 0, 1 c. l = 0, 1, 2 d. l = 0, 1, 2, 3 e. l = 0, 1, 2, 3, 4 14. The d orbitals occur in groups of __________ and hold up to __________ electrons. a. 3, 6 b. 4, 8 c. 5, 10 d ...
chapter 8
... gas for cooking in your house. Some reactions involve only heat or only light. But heat or light by itself is not necessarily a sign of chemical change, because many physical changes also involve either heat or light. However, heat and light are very strong indicators of a chemical change and should ...
... gas for cooking in your house. Some reactions involve only heat or only light. But heat or light by itself is not necessarily a sign of chemical change, because many physical changes also involve either heat or light. However, heat and light are very strong indicators of a chemical change and should ...
Aldehydes, Ketones and Carboxylic Acids
... are derived from the names of the corresponding alkanes by replacing the ending –e with –al and –one respectively. In case of aldehydes the longest carbon chain is numbered starting from the carbon of the aldehyde group while in case of ketones the numbering begins from the end nearer to the carbony ...
... are derived from the names of the corresponding alkanes by replacing the ending –e with –al and –one respectively. In case of aldehydes the longest carbon chain is numbered starting from the carbon of the aldehyde group while in case of ketones the numbering begins from the end nearer to the carbony ...
Regents Chemistry Review - New York Science Teacher
... The table gives information about the nucleus of each of four atoms. • How many different elements are represented by the nuclei in the table? ...
... The table gives information about the nucleus of each of four atoms. • How many different elements are represented by the nuclei in the table? ...
chemical bonding i: basic concepts
... throughout this chapter. However, Lewis’s ideas also apply to ionic bonding, and we briefly describe this application next. ...
... throughout this chapter. However, Lewis’s ideas also apply to ionic bonding, and we briefly describe this application next. ...
Stoichiometry - AaronFreeman
... Avogadro’s number of those particles. • One mole of molecules or formula units contains Avogadro’s number times the number of atoms or ions of each element in the compound. Stoichiometry ...
... Avogadro’s number of those particles. • One mole of molecules or formula units contains Avogadro’s number times the number of atoms or ions of each element in the compound. Stoichiometry ...
Oxidation numbers
... In the compound CO, the sum of the oxidation numbers must be 0 (rule 3). We know that oxygen has an oxidation number of −2 (this is not a peroxide) and since there is only one oxygen atom in the molecule, then the carbon atom must have an oxidation number of +2. So the oxidation number of carbon is ...
... In the compound CO, the sum of the oxidation numbers must be 0 (rule 3). We know that oxygen has an oxidation number of −2 (this is not a peroxide) and since there is only one oxygen atom in the molecule, then the carbon atom must have an oxidation number of +2. So the oxidation number of carbon is ...
Precision, accuracy and significant figures
... For a quantity to have an exact value, it must either be defined or obtained by counting. All measured quantities have an inherent uncertainty because all instruments used to make measurements have limitations, and the people operating the instruments have varying skills. The accuracy of a measureme ...
... For a quantity to have an exact value, it must either be defined or obtained by counting. All measured quantities have an inherent uncertainty because all instruments used to make measurements have limitations, and the people operating the instruments have varying skills. The accuracy of a measureme ...
Chemistry
... observe matter and its interactions everywhere in our daily life. The submicroscopic level looks at the structure of matter that gives rise to these interactions. At O-Level, students have been introduced to the fundamental idea that matter is made up of particles and the simple atomic model (electr ...
... observe matter and its interactions everywhere in our daily life. The submicroscopic level looks at the structure of matter that gives rise to these interactions. At O-Level, students have been introduced to the fundamental idea that matter is made up of particles and the simple atomic model (electr ...
C5 Chemicals of the Natural Environment SOW
... Students begin by learning about the substances found in the air, which are molecular, and hence find out about covalent bonding and the properties of simple molecular substances. Next we explore the ionic compounds found in seawater, in particular how the ionic bond forms ionic crystals. Students t ...
... Students begin by learning about the substances found in the air, which are molecular, and hence find out about covalent bonding and the properties of simple molecular substances. Next we explore the ionic compounds found in seawater, in particular how the ionic bond forms ionic crystals. Students t ...
Chemistry Senior External Syllabus 1998
... elaborated upon through dot-pointed outcomes which contain examples. Whilst the general objectives, specific objectives and dot-pointed outcomes are descriptions of mandatory processes in this course of study, the examples are provided to further explain the outcomes and thus assist the candidate to ...
... elaborated upon through dot-pointed outcomes which contain examples. Whilst the general objectives, specific objectives and dot-pointed outcomes are descriptions of mandatory processes in this course of study, the examples are provided to further explain the outcomes and thus assist the candidate to ...
Personal Tutor - Macmillan Learning
... Frequently we wish to measure quantities that cannot be expressed using one of the basic SI units. In these situations two or more units are combined to create a new unit. These units are called derived units. For example, speed is defined as the ratio of distance to time. To measure speed, two unit ...
... Frequently we wish to measure quantities that cannot be expressed using one of the basic SI units. In these situations two or more units are combined to create a new unit. These units are called derived units. For example, speed is defined as the ratio of distance to time. To measure speed, two unit ...
chapter 8 - Denton ISD
... gas for cooking in your house. Some reactions involve only heat or only light. But heat or light by itself is not necessarily a sign of chemical change, because many physical changes also involve either heat or light. However, heat and light are very strong indicators of a chemical change and should ...
... gas for cooking in your house. Some reactions involve only heat or only light. But heat or light by itself is not necessarily a sign of chemical change, because many physical changes also involve either heat or light. However, heat and light are very strong indicators of a chemical change and should ...
Atomic Structure
... Bond order is a concept in the molecular orbital theory. It depends on the number of electrons in the bonding and antibonding orbitals. Which of the following statements is true about it? The bond order (a) Cannot be a negative quantity (b) Always has an integral value (c) Can assume any value, posi ...
... Bond order is a concept in the molecular orbital theory. It depends on the number of electrons in the bonding and antibonding orbitals. Which of the following statements is true about it? The bond order (a) Cannot be a negative quantity (b) Always has an integral value (c) Can assume any value, posi ...
Chemistry 133 Problem Set Introduction
... 1.27 Using the table inside the front cover of this textbook, list the symbol for each of the following elements: (a) hydrogen (b) lithium (c) aluminum (d) xenon (e) samarium (f) iron (g) copper (h) sodium (i) mercury (j) lead 1.28 Use the table inside the cover of this textbook, first, to classify ...
... 1.27 Using the table inside the front cover of this textbook, list the symbol for each of the following elements: (a) hydrogen (b) lithium (c) aluminum (d) xenon (e) samarium (f) iron (g) copper (h) sodium (i) mercury (j) lead 1.28 Use the table inside the cover of this textbook, first, to classify ...
Chem 11 Review Answers - hrsbstaff.ednet.ns.ca
... 26. The formation of bonds between atoms depends on __. a) the electron configurations of the atoms involved b) the attraction the atoms have for electrons c) both of the preceding factors d) neither of the preceding factors 27. The particle that results when two or more atoms form covalent bonds is ...
... 26. The formation of bonds between atoms depends on __. a) the electron configurations of the atoms involved b) the attraction the atoms have for electrons c) both of the preceding factors d) neither of the preceding factors 27. The particle that results when two or more atoms form covalent bonds is ...
23. Oxidation and Reduction
... 1. The oxidation number of an atom of a free element is zero. Elements are free if they are not combined with other elements. If atoms of an element are combined with themselves, they are still considered to be free. For example, a free atom of Ag has an oxidation number of zero. In addition, atoms ...
... 1. The oxidation number of an atom of a free element is zero. Elements are free if they are not combined with other elements. If atoms of an element are combined with themselves, they are still considered to be free. For example, a free atom of Ag has an oxidation number of zero. In addition, atoms ...
Physical Science e
... Each book in the Power Practice™ series contains over 100 ready-to-use activity pages to provide students with skill practice. The fun activities can be used to supplement and enhance what you are teaching in your classroom. Give an activity page to students as independent class work, or send the pa ...
... Each book in the Power Practice™ series contains over 100 ready-to-use activity pages to provide students with skill practice. The fun activities can be used to supplement and enhance what you are teaching in your classroom. Give an activity page to students as independent class work, or send the pa ...
Unit 6- Math of Chemistry
... • What is the percent composition of O in KClO3? • 1st: Determine formula mass of element and of the compound • 2nd: % of element = element formula mass/ total formula mass x 100 ...
... • What is the percent composition of O in KClO3? • 1st: Determine formula mass of element and of the compound • 2nd: % of element = element formula mass/ total formula mass x 100 ...
Introduction to Chemistry
... 2. I can calculate the pH of a solution. 3. I can write a neutralization reaction between an acid and base. 4. I can calculate the concentration of an acid or base from data collected in a titration. Unit 9: Energy of Chemical Changes Nature of Science Goal—Science provides technology to improve liv ...
... 2. I can calculate the pH of a solution. 3. I can write a neutralization reaction between an acid and base. 4. I can calculate the concentration of an acid or base from data collected in a titration. Unit 9: Energy of Chemical Changes Nature of Science Goal—Science provides technology to improve liv ...
Chemistry 11 - Correspondence Studies
... much product will be formed? This unit will answer these questions and other questions related to amount of matter. The word stoichiometry comes from the Greek words, stoicheion (meaning any first thing or principle) and metron (meaning measure). Stoichiometry deals with the mass-mass or molemole re ...
... much product will be formed? This unit will answer these questions and other questions related to amount of matter. The word stoichiometry comes from the Greek words, stoicheion (meaning any first thing or principle) and metron (meaning measure). Stoichiometry deals with the mass-mass or molemole re ...