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... • Heterogeneous Mixture-a mixture in which the presence of a t least two different substances is visible to the eye. • Homogenous Mixture-a mixture with a composition that is uniform throughout, all the way down to the molecular level. • Hydrocarbon-any molecule consisting of only hydrogen and carbo ...
... • Heterogeneous Mixture-a mixture in which the presence of a t least two different substances is visible to the eye. • Homogenous Mixture-a mixture with a composition that is uniform throughout, all the way down to the molecular level. • Hydrocarbon-any molecule consisting of only hydrogen and carbo ...
MIDTERM EXAM – JANUARY, 2003
... 76. The alkali metals and alkaline earth metals occupy the ______________ block of the periodic table 77. The name of the group which contains fluorine, chlorine, bromine, iodine, and astatine is 78. When they react chemically, the halogens (Group VII or 17) change in what way? Naming, Bonding and W ...
... 76. The alkali metals and alkaline earth metals occupy the ______________ block of the periodic table 77. The name of the group which contains fluorine, chlorine, bromine, iodine, and astatine is 78. When they react chemically, the halogens (Group VII or 17) change in what way? Naming, Bonding and W ...
Topics for Final
... Amplitude, wavelength, frequency Electromagnetic radiation, atomic emission spectrum Planck’s Constant = h (E= hv) Photons, photoelectric effect, ground state ...
... Amplitude, wavelength, frequency Electromagnetic radiation, atomic emission spectrum Planck’s Constant = h (E= hv) Photons, photoelectric effect, ground state ...
Unit 1, Lecture 1
... No more than one alpha (or spin up) and one beta (or spin down) electron can occupy a particular orbital at any time (also called Pauli Exclusion Principle) If degenerate orbitals are available, they will be singly occupied first, then doubly. ...
... No more than one alpha (or spin up) and one beta (or spin down) electron can occupy a particular orbital at any time (also called Pauli Exclusion Principle) If degenerate orbitals are available, they will be singly occupied first, then doubly. ...
Chapter 6: Chemistry in Biology
... Substances that release hydrogen ions ( H ) when dissolved in water are called __________. Substances that release hydroxide ions ( OH ) when dissolved in water are called __________. pH and Buffers: The measure of concentration of H in a solution is called __________. ...
... Substances that release hydrogen ions ( H ) when dissolved in water are called __________. Substances that release hydroxide ions ( OH ) when dissolved in water are called __________. pH and Buffers: The measure of concentration of H in a solution is called __________. ...
Document
... same number of valence electrons. • The number of valence electrons is easily determined. It is the group number for groups 1 and 2 • Group 1: H, Li, Na, K, etc. have 1 valence e• Group 2: Be, Mg, Ca, etc. have 2 valence e- ...
... same number of valence electrons. • The number of valence electrons is easily determined. It is the group number for groups 1 and 2 • Group 1: H, Li, Na, K, etc. have 1 valence e• Group 2: Be, Mg, Ca, etc. have 2 valence e- ...
Polarizability
... Dispersion Influence The strength of a dispersion force depends on the ease with which the charge distribution in a molecule can be distorted. ...
... Dispersion Influence The strength of a dispersion force depends on the ease with which the charge distribution in a molecule can be distorted. ...
Unit 1 - Measurement Atomic Theory
... (ii) Metalloids – diagonal from 13 – 18 (iii) Non-metals – right side ...
... (ii) Metalloids – diagonal from 13 – 18 (iii) Non-metals – right side ...
2012 Coaches Institute Presentation
... Assume AgCrO4 dissociates completely in water at 25oC. [Ag+] = 1.3 x 10-4 AgCrO4(s) ⇔ 2Ag+(aq) + CrO4-2(aq) Ksp = [Ag+]2[CrO4-2] [CrO4-2] = 1.3 x 10-4 mol Ag+ x 1 mol CrO4-2 ...
... Assume AgCrO4 dissociates completely in water at 25oC. [Ag+] = 1.3 x 10-4 AgCrO4(s) ⇔ 2Ag+(aq) + CrO4-2(aq) Ksp = [Ag+]2[CrO4-2] [CrO4-2] = 1.3 x 10-4 mol Ag+ x 1 mol CrO4-2 ...
ionization energies
... • The inner-most electrons of an element comprise what is known as a noble gas core. • At the close of each shell, you have a noble gas configuration. Noble gases are chemically inactive because they have completely filled shells. • Lithium, for example, has a two electron core, which we call a Heli ...
... • The inner-most electrons of an element comprise what is known as a noble gas core. • At the close of each shell, you have a noble gas configuration. Noble gases are chemically inactive because they have completely filled shells. • Lithium, for example, has a two electron core, which we call a Heli ...
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... eg. butane reacts with oxygen to produce carbon dioxide and water 4. Chemical Change: a chemical reaction; a change in which at least one or more new substances (products) are formed. The products have different properties from the starting ...
... eg. butane reacts with oxygen to produce carbon dioxide and water 4. Chemical Change: a chemical reaction; a change in which at least one or more new substances (products) are formed. The products have different properties from the starting ...
Study Guide 1st Semester
... have to do with atomic emission spectra? 40. What are the three forms of radioactive decay? 41. What are the decay equations for the following processes? a) Alpha decay of Bismuth-214 b) Alpha decay of Dysprosium-164 c) Beta decay of Seaborgium-270 d) Beta decay of Radium-227 42. What is fission? Wh ...
... have to do with atomic emission spectra? 40. What are the three forms of radioactive decay? 41. What are the decay equations for the following processes? a) Alpha decay of Bismuth-214 b) Alpha decay of Dysprosium-164 c) Beta decay of Seaborgium-270 d) Beta decay of Radium-227 42. What is fission? Wh ...
NM Strand
... 49. If 40.0 g of NaOH is dissolved in 200.g of water, what is the concentration? 50. A student spills a chemical in the laboratory. What should he do first? 51. A sour candy has a pH of: 52. A characteristic that can be observed or measured without changing the sample’s composition is 53. An experim ...
... 49. If 40.0 g of NaOH is dissolved in 200.g of water, what is the concentration? 50. A student spills a chemical in the laboratory. What should he do first? 51. A sour candy has a pH of: 52. A characteristic that can be observed or measured without changing the sample’s composition is 53. An experim ...
K,7th Grade Test Review: Atoms and Chemical Reactions PART
... 1. __________ is the smallest unit of an element that is still that element. 2. __________ is a substance that cannot be broken down into similar substances by physical or chemical changes. 3. Protons and neutrons have a __________ of 1 unit. Electrons have almost none. 4. An atom with more protons ...
... 1. __________ is the smallest unit of an element that is still that element. 2. __________ is a substance that cannot be broken down into similar substances by physical or chemical changes. 3. Protons and neutrons have a __________ of 1 unit. Electrons have almost none. 4. An atom with more protons ...
CHEMISTRY 1 FINAL EXAM REVIEW
... 2.) Write the formulas and charges for the following ions: Phosphate, nitrite, nitrate, hydroxide, carbonate, ammonium. 3.) What is the total number of atoms in one molecule of C6Hl2O6? 4.) What types of elements when combined would be most likely to form an ionic compound? 5.) What is the ionic cha ...
... 2.) Write the formulas and charges for the following ions: Phosphate, nitrite, nitrate, hydroxide, carbonate, ammonium. 3.) What is the total number of atoms in one molecule of C6Hl2O6? 4.) What types of elements when combined would be most likely to form an ionic compound? 5.) What is the ionic cha ...
Chapter 2 Practice Questions
... A) Elements are made up of tiny particles called atoms. B) Atoms are not created or destroyed in chemical reactions. C) All atoms of a given element are identical. D) Atoms are indivisible in chemical reactions. E) All of these statements are true according to modern atomic theory. 4. Avogadro's hyp ...
... A) Elements are made up of tiny particles called atoms. B) Atoms are not created or destroyed in chemical reactions. C) All atoms of a given element are identical. D) Atoms are indivisible in chemical reactions. E) All of these statements are true according to modern atomic theory. 4. Avogadro's hyp ...
Chemical reactions occur with outer level electrons so that is the
... Atoms will combine to form compounds to reach 8 electrons in their outer energy level. Atoms with less than 4 electrons will lose electrons For Na it is easier to lose 1 electron than to gain 7 electrons A Na atom has 11+ and 11- IF it loses one electron then 11+ and 10Atoms with more than 4 electro ...
... Atoms will combine to form compounds to reach 8 electrons in their outer energy level. Atoms with less than 4 electrons will lose electrons For Na it is easier to lose 1 electron than to gain 7 electrons A Na atom has 11+ and 11- IF it loses one electron then 11+ and 10Atoms with more than 4 electro ...
Atomic Structure, Molecular Structure & Bonding
... – H is never central; C is often central 3. Draw in electrons to fulfill octet and duet rules – C “likes” 8 electrons; H “likes” 2 electrons 4. Count ve-’s and compare to #2 5. If too many e-’s, make a double bond 6. Calculate formal charge (FC) to double check structure – No or low FCs (e.g. +1) mo ...
... – H is never central; C is often central 3. Draw in electrons to fulfill octet and duet rules – C “likes” 8 electrons; H “likes” 2 electrons 4. Count ve-’s and compare to #2 5. If too many e-’s, make a double bond 6. Calculate formal charge (FC) to double check structure – No or low FCs (e.g. +1) mo ...
Chapter 6.2 Notes
... Metals form metallic bonds – bonds between metal cations and the sea of electrons around them - the nuclei form a closest packing structure - the electrons flow around them and do not belong to any one atom - there is a sea of freely moving electrons - this allows metals to flex into sheets or wires ...
... Metals form metallic bonds – bonds between metal cations and the sea of electrons around them - the nuclei form a closest packing structure - the electrons flow around them and do not belong to any one atom - there is a sea of freely moving electrons - this allows metals to flex into sheets or wires ...
MYP Chemistry: Final Review
... How are elements in the same group (column) related? How are the alkali metals all related? The noble gases? All have the same final electron configuration number; all have same number of valence electrons Alkali Metals: end in s1 configuration, have 1 valence electron Noble gases: end in s2p6, have ...
... How are elements in the same group (column) related? How are the alkali metals all related? The noble gases? All have the same final electron configuration number; all have same number of valence electrons Alkali Metals: end in s1 configuration, have 1 valence electron Noble gases: end in s2p6, have ...
ChemFinalgeocities
... In a Lewis dot diagram, the dots represent _____ in the atom. a. all the electrons c. the protons b. the valence electrons d. the neutrons Which of the following is an example of periodicity? a. eating breakfast c. writing a letter b. hitting a home run d. sneezing Which element is least likely to b ...
... In a Lewis dot diagram, the dots represent _____ in the atom. a. all the electrons c. the protons b. the valence electrons d. the neutrons Which of the following is an example of periodicity? a. eating breakfast c. writing a letter b. hitting a home run d. sneezing Which element is least likely to b ...
Common Chemical Formula List
... Chemical Formula Definition: An expression which states the number and type of atoms present in a molecule of a substance. Chemical formulas such as HClO4 can be divided into empirical formula, molecular formula, and structural formula. Chemical symbols of elements in the chemical formula represent ...
... Chemical Formula Definition: An expression which states the number and type of atoms present in a molecule of a substance. Chemical formulas such as HClO4 can be divided into empirical formula, molecular formula, and structural formula. Chemical symbols of elements in the chemical formula represent ...