Chemistry
Chemical reactions, stoichiometry, molecular structures, and element properties.
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13. 2 s + fe₂o₃ → fe + so₂
$2S + 2Fe_2O_3 ightarrow4Fe + 3SO_2$ (coefficients are 2, 2, 4, 3)
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13. s + fe₃o₄ → fe + so₂
2, 1, 3, 2
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19. in the measurements below, the significant digits are underlined. d…
a. Non - zero digits (4, 2) and trailing zero after decimal are significant. b. Non - zero digits (2, 1) are significant, trailing zeros are not. c. Non - zero digits (5, 1) and t…
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37. classify each as a solid, a liquid, or a gas at room temperature. a…
37. a. Líquido b. Gas c. Sólido d. Gas e. Sólido f. Sólido 38. a. Propiedad física b. Propiedad física c. Propiedad química d. Propiedad física e. Propiedad química f. Propiedad f…
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lab questions 1. record your results. (c - 10 marks) | metals | kcl | f…
Cu + KCl → NR Cu + Fe(NO₃)₂ → NR Cu + CaCl₂ → NR Cu + Na₂CO₃ → NR Cu + HCl → NR Zn + KCl → NR Zn + Fe(NO₃)₂→Zn(NO₃)₂ + Fe Zn + CaCl₂ → NR Zn + Na₂CO₃ → NR
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6. (\text{li}_{3}\text{po}_{4}\to\text{li}+\text{p}+\text{o}_{2}) 7. (\…
6. 4, 12, 4, 8 7. 1, 5, 5, 1 8. 4, 3, 2, 6
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13. s + fe₂o₃ → fe + so₃ 14. cu₂o + c → cu + co₂
13. \(1S + 1Fe_2O_3 ightarrow2Fe + 1SO_3\) 14. \(2Cu_2O+1C ightarrow4Cu + 1CO_2\)
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4 cocl₆ 8. identify the coefficient above 9. identify the subscript abo…
8. 4 9. 6 10. 1, 2, 1, 1 11. 2, 1, 2 12. 8, 16, 1
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how many stable isotopes does silver have? 3 2 1 rewatch submit
B. 2
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15. what is the mass number equal to? number of protons plus number of …
Number of protons plus number of neutrons
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what is different about different isotopes? atomic numbers mass numbers…
B. mass numbers
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what is different between the two isotopes of silver? number of protons…
number of neutrons
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what particles are added together to determine the relative atomic mass…
C. protons, D. neutrons
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name: jeremiah watson periodic table study guide fill out the chart: | …
S: chalcogen Ga: boron - group element (triels) Sb: pnictogen
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7. order the following from the smallest atomic radii to the largest. e…
He, $Co^{2+}$, $Fe^{2+}$, $Cl^-$
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14. why does he say the atomic number is like \the soul of the atom\? b…
Because it doesn't change, and determines what kind of atom it is.
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6. is the radius of a cl- ion equal, greater, or less than a neon atom?…
The radius of a $Cl^-$ ion is greater than a neon atom.
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multiple - choice question 13. what is the atomic number equal to? numb…
Number of protons in the nucleus
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a proton is added to carbon? nitrogen a proton is removed from carbon b…
Carbon Carbon $C^-$ $C^+$
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12. which subatomic particle can jump from atom to atom? electrons prot…
Electrons
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here are three isotopes of an element: ₆¹²c ₆¹³c ₆¹⁴c the element is th…
The element is carbon The number 6 refers to the atomic number The numbers 12, 13, and 14 refer to the mass number First isotope: 6 protons and 6 neutrons Second isotope: 6 proton…
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11. how many letters can the symbol for an element be? 1 or 2 only 2 on…
1 or 2
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10. what determines what element an atom is - its very identity? number…
Number of protons
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anwar al - sadat and menachem begin won the nobel peace prize in 1978 f…
D. signing the Camp David Accords.
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lab questions 1. record your results. (c - 10 marks) |metals|kcl|fe(no₃…
1. Results table (completed with NR for no reaction as per above analysis): | Metals | KCl | $Fe(NO_3)_2$ | $CaCl_2$ | $Na_2CO_3$ | HCl | | ---- | ---- | ---- | ---- | ---- | ----…
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multiple - choice question 6. what is the nucleus? the outside of the a…
The center of the atom
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sort the events in the order in which they occurred, beginning with the…
1. Greek philosopher Democritus introduces the concept of uncuttable matter that he calls atomos. 2. John Dalton concludes that compounds are made of combined particles and reintr…
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which statement is part of daltons atomic theory? select all that apply…
B. Atoms of the same element have the same characteristics. C. All substances are made of atoms.
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by using the terms from the answer bank to fill in the blanks. answer b…
1. Daoist alchemists, prolonged life 2. fireworks, warfare 3. Chinese, Mongols, Eurasia
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10. neon has two isotopes: neon - 10 and neon - 12. a. which isotope ha…
a. neon - 12 b. neon - 12 c. Neither, they have the same number of protons. d. Neither, they have the same number of electrons.
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which of these is a postulate of kinetic molecular theory? a the kineti…
A. The kinetic energy of gas molecules depends on temperature.
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match the vocabulary word to its definition. smallest unit of an elemen…
1. smallest unit of an element - b. atom 2. a subatomic particle with a negative charge - c. electron 3. center of an atom - a. nucleus
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being hungry after a long day at calvert hall a student arrives home an…
1. Chemical Change; Evidence: Browning and flavor development during baking (Maillard reaction), burning and turning black. 2. Chemical Change; Evidence: Breakdown by stomach acid…
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which subatomic particles contribute the most to the mass of an atom? e…
Protons and neutrons
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complete the orbital diagram for the following neutral element: antimon…
1s: ↑↓ 2s: ↑↓ 2p: ↑↓ ↑↓ ↑↓ 3s: ↑↓ 3p: ↑↓ ↑↓ ↑↓ 4s: ↑↓ 3d: ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ 4p: ↑↓ ↑↓ ↑↓ 5s: ↑↓ 4d: ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ 5p: ↑ ↑ ↑ 6s: 4f: 5d: 6p:
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part 2. in the box to the right. construct the lewis dot structure of t…
Draw the symbol of the element (let's assume it's Sn, tin, which has this electron - configuration in its neutral state). Place 4 dots around the symbol, one on each of the four s…
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what term refers to the unique number of protons in an elements nucleus…
B. Atomic number
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what is the name for a substance made up of only one kind of atom? mixt…
C. Element
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assignment balanced equation: has the same number introduction to balan…
1
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what is the name for a substance made up of only one kind of atom? mixt…
C. Element
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the molecule shown in the figure is a(n) ... polysaccharide. saturated …
unsaturated fatty acid
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question 1 how many glucose molecules (c6h12o6) are in 9.00 g of glucos…
$3.011\times 10^{22}$ glucose molecules
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the energy derived from the digestion of food is ____________. a. kinet…
D. chemical energy
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students created diagrams to demonstrate collisions between gas molecul…
A. Diagram A: gas molecule collisions are in random motion and perfectly elastic
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name______ periodic table packet #1 period______ directions: use your p…
1. Ag 2. 200.59 3. Nickel 4. Chlorine (Cl) 5. Fe, Cu (answers may vary) 6. Group 11 7. He, Ne (answers may vary) 8. F, Cl (answers may vary) 9. W 10. 63.55 11. Kr 12. Atomic Numbe…
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assuming 50% efficiency, 150 kcals of chemical energy would result in _…
B. 75 kcals
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part 1: unit quiz 2a - electronic structure complete the table below by…
| ELEMENT SYMBOL | TOTAL NUMBER OF ELECTRONS | ELECTRON CONFIGURATION | NUMBER OF VALENCE ELECTRONS | LEWIS DOT STRUCTURE | | ---- | ---- | ---- | ---- | ---- | | Al | 13 | \(1s^{…
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1. are the following ionic compounds soluble or insoluble in water? bas…
a. Soluble, strong electrolyte b. Insoluble, weak electrolyte c. Insoluble, weak electrolyte d. Insoluble, weak electrolyte e. Slightly soluble, strong electrolyte f. Insoluble, w…
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name: date: period: version b part 1 unit quiz 2a - electronic structur…
| ELEMENT SYMBOL | TOTAL NUMBER OF ELECTRONS | ELECTRON CONFIGURATION | NUMBER OF VALENCE ELECTRONS | LEWIS DOT STRUCTURE | |---|---|---|---|---| | Al | 13 | $1s^{2}2s^{2}2p^{6}3s…
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question 23 water molecules are able to form hydrogen bonds with ... co…
E. compounds that have polar covalent bonds
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question 21 what is the maximum number of covalent bonds an element wit…
B. 2
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question 20 2 pts the atomic number of sulfur is 16, which indicates th…
16 protons.
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name______ periodic table packet #1 period______ directions: answer the…
1. A vertical column of elements in the periodic table with similar chemical properties due to the same number of valence electrons. 2. A horizontal row of elements in the periodi…
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question 18 in an aqueous solution, water molecules associate with one …
hydrogen bonds
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question 17 the tendency of dissimilar molecules to cling together and …
B. adhesion
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question 16 2 pts a covalent chemical bond is one in which ... ○ electr…
outer - shell electrons of two atoms are shared so as to occupy the outer electron shells of both atoms.
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question 15 2 pts which of the following explains most specifically the…
hydrogen bonds
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question 14 which of the following are the strongest molecular interact…
D. covalent bonds
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consider the generic chemical reaction depicted below: 2a + b -> c + 2d…
4
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the molar mass of acetic acid is 60.052 g/mol. how many moles of acetic…
B. 0.01672
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what results from the chemical reaction illustrated in this figure? for…
formation of an ionic bond
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consider the chemical structure depicted below. what is the molar mass?…
116.072 g/mol
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classify the following as element, compound, solution, or heterogeneous…
1. Element, compuesto, solución 2. Element 3. Heterogeneous mixture 4. Compound 5. Solution, heterogeneous mixture 6. Element, compound 7. Compound
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chapter 3 - the basic ingredients of life test your knowledge 1. the mo…
Atom
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how do you break apart a compound? chemical bonds must be broken. water…
Chemical bonds must be broken.
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how many oxygen atoms (o) are in a water molecule? hint: in the model, …
1
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how many total atoms are in a carbon dioxide molecule? hint: the sphere…
3
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which of these is the atomic symbol of carbon? c 6 12.011
C
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which of the following is measured in the unit amu? atomic number atomi…
atomic mass
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which element has an atomic number of 12? sodium calcium magnesium
Magnesium
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which element has 11 protons in its nucleus? magnesium calcium sodium
D. Sodium
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what do we call the area of an atom where electrons are located? electr…
Electron cloud
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how many electrons are in an uncharged atom? more than the number of pr…
the same as the number of protons
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what is the very smallest piece of copper possible? a copper nugget a c…
a copper atom
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what type of atom makes up the element bromine (br)? bromine atoms gall…
Bromine atoms
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which element shares similar properties with zinc (zn)? tin (sn) mercur…
B. Mercury (Hg)
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which element shares similar properties to chlorine (cl)? arsenic (as) …
C. Fluorine (F)
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using the four steps to critique artwork. 1. describe the artwork. 2. a…
How did the artist use vanishing point(s) and orthogonal lines?
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quick questions: chapter 6 1. list 3 elements in each family: alkali me…
1. Lithium (Li), Sodium (Na), Potassium (K); Beryllium (Be), Magnesium (Mg), Calcium (Ca); Fluorine (F), Chlorine (Cl), Bromine (Br); Helium (He), Neon (Ne), Argon (Ar) 2. A model…
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facebook 31. who founded facebook? 32. what university did he attend? 3…
31. Mark Zuckerberg 32. Harvard University 33. 2004 34. Menlo - Park, California 35. Advertising 36. Billions (varies over time) 37. Peter Thiel 38. Likely Mark Zuckerberg or a te…
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use the list to answer the question. which two elements in the list wou…
Potassium and iodine
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fluorine has 7 valence electrons. which charge is its ion likely to hav…
- 1
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which information about an atom can a period number give you? (1 point)…
how many energy levels it has
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student exploration: water pollution vocabulary: bacterial pollution, n…
1. Bleach, drain - cleaners, pesticides. 2. Industrial waste discharge, oil spills, agricultural runoff, sewage overflows. 3. The introduction of harmful and often poisonous subst…
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when moving across a period from left to right in the periodic table (e…
Valence electrons increase by one.
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based on the naming rules for ions, which of the following is a negativ…
chloride
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read the text. when a person ingests caffeine, whether in the form of a…
sequential
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read the text. during world war i, british and american warships were a…
problem - solution
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what is verbal irony? * a) when the audience knows something the charac…
For "What is verbal irony?": C) When a character says one thing but means another For "What is rhetoric?": A. The art of effective or persuasive speaking or writing
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what is situational irony? * 1 point a) when the audience knows somethi…
For "What is situational irony?": B. When there is a contrast between what the reader expects and what actually happens For "What is dramatic irony?": A. When the reader knows som…
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match the columns: connect the effects of soil pollution in column a wi…
Loss of soil fertility - Poor crop yield Radioactive Contamination - Causes Cancer Leaching of chemicals - Water pollution
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what does a rhyme scheme describe? * a) the number of lines in a poem b…
1. B) The pattern of rhymes at the end of each line 2. B) A literary device used to show contrast between appearance and reality
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what color change do we see when nitric acid is added to different litm…
B. red → red, C. blue → red
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one atomic mass unit is approximately equal to the _______. a mass of a…
a. mass of a proton
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a carbon atom has six protons and six neutrons. what is its atomic numb…
A. 6
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the mass number for an atom is numerically equal to which quantity? a t…
B. the number of protons plus the number of neutrons
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what is the mass number of a carbon isotope that has seven neutrons? a …
A. 13
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in a neutral atom, which atomic particles are equal in number? a electr…
C. protons and electrons
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what represents the total number of protons and neutrons in an atom? en…
Mass - number
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review the text. does your shampoo leave your hair dry or damaged? flat…
The author urges readers to try Organi - Goo today.