Chemical Change
... Enzymes – proteins that act as biological catalyst and speed up the rate of a chemical reaction. – Enzymes are not changed by the reaction (so they can be re-used). – Enzymes are very specific – they will only speed up one chemical reaction. – Enzymes speed up chemical reactions by lowering the “sta ...
... Enzymes – proteins that act as biological catalyst and speed up the rate of a chemical reaction. – Enzymes are not changed by the reaction (so they can be re-used). – Enzymes are very specific – they will only speed up one chemical reaction. – Enzymes speed up chemical reactions by lowering the “sta ...
Chemistry I - Net Start Class
... 68. True or False - Salt (NaCl) from the ocean and salt (NaCl) from a neutralization reaction are the same. 69. True or False - Vitamin C that is produced in a factory and vitamin C from oranges is the same. 70. When an ionic bond is formed, electrons are transferred from ______ to ______. 71. What ...
... 68. True or False - Salt (NaCl) from the ocean and salt (NaCl) from a neutralization reaction are the same. 69. True or False - Vitamin C that is produced in a factory and vitamin C from oranges is the same. 70. When an ionic bond is formed, electrons are transferred from ______ to ______. 71. What ...
Atoms and the Periodic Table PowerPoint
... in the table, he predicted a new element would one day be found and deduced its properties. And he was right. Three of those elements were found during his lifetime: gallium, scandium, and germanium. ...
... in the table, he predicted a new element would one day be found and deduced its properties. And he was right. Three of those elements were found during his lifetime: gallium, scandium, and germanium. ...
UNIT 1 - MATTER AND CHEMICAL BONDING
... a) C-12 as basis of mole b) Avogadro’s constant c) isotopic abundance & relative atomic mass d) empirical & molecular formula e) law of definite proportions or constant composition f) quantitative relationships in a balanced equation g) limiting reagent h) actual yield, theoretical yield, percentage ...
... a) C-12 as basis of mole b) Avogadro’s constant c) isotopic abundance & relative atomic mass d) empirical & molecular formula e) law of definite proportions or constant composition f) quantitative relationships in a balanced equation g) limiting reagent h) actual yield, theoretical yield, percentage ...
Webquest: Atomic Theories and Models – an Historical Work in
... 1. What are the three subatomic particles that all atoms are made of? 2. Where are each of the three particles located within the atom? 3. What is the electrical charge of each particle? ...
... 1. What are the three subatomic particles that all atoms are made of? 2. Where are each of the three particles located within the atom? 3. What is the electrical charge of each particle? ...
Document
... 17. The atomic mass of barium is due to the number of a. neutrons and electrons in the nucleus b. electrons in the nucleus c. protons and neutrons in the nucleus d. protons and electrons in the atom 18. Choose the pair of elements that will form a compound with the most ionic character a. Li & O b. ...
... 17. The atomic mass of barium is due to the number of a. neutrons and electrons in the nucleus b. electrons in the nucleus c. protons and neutrons in the nucleus d. protons and electrons in the atom 18. Choose the pair of elements that will form a compound with the most ionic character a. Li & O b. ...
1st Semester Exam in High School Chemistry
... A. neutrons equal the number of protons B. proton forces pull on the neutrons C. electrons equal the number of protons D. electrons equal the number of neutrons ...
... A. neutrons equal the number of protons B. proton forces pull on the neutrons C. electrons equal the number of protons D. electrons equal the number of neutrons ...
A`r ji r/ Ii
... What is the empirical and molecular formula of a compound with the following percent composition: p 26.7 %, N = 12.1 %, Cl 61.2 %. The molar mass of the compound is 695 g/mol. ...
... What is the empirical and molecular formula of a compound with the following percent composition: p 26.7 %, N = 12.1 %, Cl 61.2 %. The molar mass of the compound is 695 g/mol. ...
Chapter2
... • Electronegativity is the tendency of an atom to gain an electron. High electronegativity atoms tend to be on the right side of the Periodic Table and low electronegativity atoms are on the left side. What is the most electronegative element? • Electropositivity is the tendency of an atom to loss e ...
... • Electronegativity is the tendency of an atom to gain an electron. High electronegativity atoms tend to be on the right side of the Periodic Table and low electronegativity atoms are on the left side. What is the most electronegative element? • Electropositivity is the tendency of an atom to loss e ...
PAP Chemistry - Fall Final Review
... 15. Periodic Trends – know atomic radius, electronegatitivity, ionization energy, ionic radius and how they compare 16. What is the octet rule? What orbitals (s,p,d,f) must be filled for it to be satisified? 17. What is the general electron configuration for a noble gas? (s, p, d, f) 18. Write the e ...
... 15. Periodic Trends – know atomic radius, electronegatitivity, ionization energy, ionic radius and how they compare 16. What is the octet rule? What orbitals (s,p,d,f) must be filled for it to be satisified? 17. What is the general electron configuration for a noble gas? (s, p, d, f) 18. Write the e ...
Expt #5
... Isomerism in Alkanes, Alcohols, and Alkenes using Molecular Models Materials Needed Molecular model kit Relevant Textbook Reading Smith, Chapter 10.1-10.6, 11.1-11.3, 12.1-12.2 Background Carbon almost always forms four bonds, nitrogen forms three, oxygen two, hydrogen one, and the halogens all form ...
... Isomerism in Alkanes, Alcohols, and Alkenes using Molecular Models Materials Needed Molecular model kit Relevant Textbook Reading Smith, Chapter 10.1-10.6, 11.1-11.3, 12.1-12.2 Background Carbon almost always forms four bonds, nitrogen forms three, oxygen two, hydrogen one, and the halogens all form ...
Chapter 2 Atoms, Molecules, and Ions
... themselves composed of a group of covalently bonded atoms with an overall charge. This group of charged species is called polyatomic ions. NH4+ (ammonium ion) SO42- (sulfate ion), ...
... themselves composed of a group of covalently bonded atoms with an overall charge. This group of charged species is called polyatomic ions. NH4+ (ammonium ion) SO42- (sulfate ion), ...
Chemistry I Review - BarbaraElam-Rice
... 31) An intermolecular force that holds ionic compounds together is called electrostatic attraction. 32) Describe the 3 intermolecular forces? Which of these forces is the strongest? weakest? 33) How are intermolecular forces different from chemical bonds? Which is stronger? 34) If the electronegativ ...
... 31) An intermolecular force that holds ionic compounds together is called electrostatic attraction. 32) Describe the 3 intermolecular forces? Which of these forces is the strongest? weakest? 33) How are intermolecular forces different from chemical bonds? Which is stronger? 34) If the electronegativ ...
Chem Unit 2 Review Guide ANSWERS
... Conservation of Mass apply to each type of reaction? Chemical reactions only involve the atoms’ valence electrons. In a nuclear reaction, the nucleus is actually altered. The Law of Conservation of Mass holds true during chemical reactions, but is not during a nuclear reaction, as mass is converted ...
... Conservation of Mass apply to each type of reaction? Chemical reactions only involve the atoms’ valence electrons. In a nuclear reaction, the nucleus is actually altered. The Law of Conservation of Mass holds true during chemical reactions, but is not during a nuclear reaction, as mass is converted ...
SOLUBILITY RULES FOR IONIC COMPOUNDS IN WATER
... 38. For nonpolar molecular substances, give (a) three examples, (b) the major attractive force between the particles, (c) high or low melting points, (d) electrical conductivity as a solid and as a liquid, (e) water solubility, and (f) how the relative melting points of two or more members of this c ...
... 38. For nonpolar molecular substances, give (a) three examples, (b) the major attractive force between the particles, (c) high or low melting points, (d) electrical conductivity as a solid and as a liquid, (e) water solubility, and (f) how the relative melting points of two or more members of this c ...
MIDTERM EXAM – JANUARY, 2003
... 73. Describe how ionization energy changes as you move across the periodic table. 74. Describe how electronegativity changes as you move across the periodic table. 75. The transition metals occupy the ______________ block of the periodic table 76. The alkali metals and alkaline earth metals occupy t ...
... 73. Describe how ionization energy changes as you move across the periodic table. 74. Describe how electronegativity changes as you move across the periodic table. 75. The transition metals occupy the ______________ block of the periodic table 76. The alkali metals and alkaline earth metals occupy t ...
First Year - WordPress.com
... Q. 28. A 50.00 mL sample of a cough mixture prepared by a pharmacist was found to have a mass of 46.0g. what is the density (in g/mL) of this mixture. Stated to the correct number of ...
... Q. 28. A 50.00 mL sample of a cough mixture prepared by a pharmacist was found to have a mass of 46.0g. what is the density (in g/mL) of this mixture. Stated to the correct number of ...
Molecular Geometry and Bonding Theories
... Cl (also Br and I, since they have seven valence electrons). This T-shaped molecular geometry arises from a trigonal bipyramidal electron-domain geometry with two nonbonding domains (Table 9.3). Assuming each F atom has three nonbonding domains and forms only single bonds with A, A must have seven v ...
... Cl (also Br and I, since they have seven valence electrons). This T-shaped molecular geometry arises from a trigonal bipyramidal electron-domain geometry with two nonbonding domains (Table 9.3). Assuming each F atom has three nonbonding domains and forms only single bonds with A, A must have seven v ...