化学
化学反応、化学量論、分子構造、元素の性質。
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give the noble gas electron configuration for the only cadmium ion (ele…
[Kr] 5s⁰ 4d¹⁰
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give the noble gas electron configuration for cadmium, element 48. __1_…
[Kr] $5s^{2}4d^{10}$
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give the noble gas electron configuration for cadmium, element 48. __1_…
[Kr] $5s^{2}4d^{10}$
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give the correct box associated with each subshell 1. 1s² 2. 2s¹ 3. 2p¹…
1. c 2. b 3. o 4. ee 5. ee
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indicate whether the following follow the aufbau principle __1__ 1s² 2s…
1. B. no 2. A. yes 3. A. yes 4. A. yes
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an indicator changes color in the presence of the substance it indicate…
true
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what is kinetic energy? a. the energy an object has due to its motion b…
A. the energy an object has due to its motion
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use the table to answer the question. elements with their electronegati…
B. bromine and nitrogen
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which phrase best describes electronegativity? (1 point) the number of …
the relative strength with which an element attracts electrons in a chemical bond
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based on their locations in the periodic table, which two elements are …
B. nitrogen (N) and oxygen (O)
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which statement about sodium chloride is correct? (1 point) the sodium …
The sodium atom transfers electrons to the chlorine atoms to form ionic bonds.
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which element would most likely lose electrons to form positive ions wh…
C. rubidium (Rb)
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2h₂ + 1o₂ →→ 2h₂o if you change the 2h₂ to 3h₂ molecules and balance th…
It is not possible to produce water without leftover molecules.
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it takes 1 molecule of nitrogen and 3 molecules of hydrogen to produce …
C. $2N_2$ and $6H_2$
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which statement correctly explains why the ashes of burnt paper have le…
Some of the atoms in the paper became gases.
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one molecule of calcium oxide, cao, and one molecule of carbon dioxide,…
CaCO₃
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when iron rusts and forms iron oxide, the iron oxide has more mass than…
Iron oxide has oxygen atoms, and pure iron does not.
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the box orbital diagram corresponding to s² p³ is __1__ __2__ the box o…
1. c 2. dd 3. mm 4. ee
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the box orbital diagram corresponding to f^5 is __1__ the box orbital d…
1. ee. 2. mm.
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the box orbital diagram corresponding to d^6 is __1__ the box orbital d…
1. ee 2. yy
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what is the process of matter changing from a liquid to a gas? (1 point…
Evaporation
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the box orbital diagram corresponding to d^5 is __1__ the box orbital d…
1. ee. 2. a.
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what is the process of matter changing from a gas to a liquid? (1 point…
B. Condensation
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what is the process of matter changing from a liquid to a solid? (1 poi…
B. Crystallization
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the box orbital diagram corresponding to p³ is __1__ the box orbital di…
1. k. ↓ ↓ ↑ 2. s. ↓ ↓ ↓ ↑
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give the noble gas shortened electron configuration for se __1__ 4__2__…
1. C. Ar, J. s2, CC. d10, P. p4 2. D. Kr, J. s2, CC. d10, R. p6
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give the noble gas shortened electron configuration for hf __1__ 6__2__…
1. E. Xe, J. s2, EE. f14, U. d2 2. E. Xe, H. s0, EE. f14, S. d0
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give the noble gas shortened electron configuration for ga __1__ 4__2__…
1. C. Ar 2. J. s² 3. CC. d¹⁰ 4. M. p¹ 5. C. Ar 6. H. s⁰ 7. CC. d¹⁰ 8. L. p⁰
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give the noble gas shortened electron configuration for zr __1__ 5__2__…
1. D. Kr, J. s$^2$, U. d$^2$ 2. D. Kr, H. s$^0$, S. d$^0$
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there are 3 ways to show the electron configuration for an element or i…
1. A. He 2. J. $s^2$ 3. M. $p^5$ 4. B. Ne 5. J. $s^2$ 6. N. $p^6$
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the aufbau principle describes the order of subshells in an atom in ter…
1. Z. 5f 2. T. 6d 3. N. 7p
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the aufbau principle describes the order of subshells in an atom in ter…
Y. 4f, S. 5d, M. 6p
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the aufbau principle describes the order of subshells in an atom in ter…
1. R. 4d 2. L. 5p
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the aufbau principle describes the order of subshells in an atom in ter…
1. Q. 3d 2. K. 4p
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the aufbau principle describes the order of subshells in an atom in ter…
1. I. 2p 2. J. 3p
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the complete electron configuration for cl is 1s² __1__ __2__ __3__ __4…
1. F. 2s² 2. M. 2p⁶ 3. P. 3s² 4. V. 3p⁵ 5. F. 2s² 6. M. 2p⁶ 7. P. 3s² 8. W. 3p⁶
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the complete electron configuration for na is 1s² __1__ __2__ __3__ the…
1. F. $2s^{2}$ 2. M. $2p^{6}$ 3. O. $3s^{1}$ 4. F. $2s^{2}$ 5. M. $2p^{6}$ 6. N. $3s^{0}$
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3s² signifies that the electrons are in shell number __1__ the electron…
1. D. 3 2. H. s 3. C. 2
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5 four materials are added to a vat of water. which materials will diss…
B. sugar, C. food dye
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give the maximum number of electrons allowed in each subshell s subshel…
1. C. 2 2. G. 6 3. K. 10 4. O. 14
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give the number of valance and core electrons for each. valence electro…
Mg has C. 2 valence electrons and K. 10 core electrons Mg⁺² has A. 0 valence electrons and K. 10 core electrons Ar has I. 8 valence electrons and K. 10 core electrons
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give the number of valance and core electrons for each. valence electro…
Mg has C. 2 valence electrons and K. 10 core electrons Mg⁺² has A. 0 valence electrons and K. 10 core electrons Ar has I. 8 valence electrons and K. 10 core electrons
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give the number of valance and core electrons for each. valence electro…
1. B. 1 2. K. 10 3. I. 8 4. C. 2 5. B. 1 6. S. 18 7. I. 8 8. K. 10
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give the number of valance and core electrons for each. valence electro…
O has G. 6 valence electrons and A. 2 core electrons \(O^{2 -}\) has I. 8 valence electrons and A. 2 core electrons Ne has I. 8 valence electrons and A. 2 core electrons
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give the number of valence and core electrons for each. valence electro…
O has G. 6 valence electrons and C. 2 core electrons O²⁻ has I. 8 valence electrons and C. 2 core electrons Ne has I. 8 valence electrons and C. 2 core electrons
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give the number of valance and core electrons for each. valence electro…
1. H. 7 2. C. 2 3. I. 8 4. C. 2 5. H. 7 6. K. 10 7. I. 8 8. K. 10
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for the nuclear reaction $^{110}_{47}ag\\to^{0}_{- 1}e+^{110}_{48}cd$. …
1. P. 5 2. P. 5 3. T. 1260 4. A. 200 5. I. Cd - 110
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for the nuclear reaction $^{110}_{47}ag \to ^{0}_{-1}e+^{110}_{48}cd$. …
1. N. 3 2. N. 3 3. E. 25.0 4. A. 200. 5. I. Cd - 110
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the sweet slice pie shop sells organic pies with locally - sourced ingr…
$\frac{2}{3}$
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according to the diagram, which statements describe the solutions immed…
The two solutions have different concentrations.
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according to the diagram, which statements describe the solutions immed…
Water is the solvent in both solutions.
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the atomic radius of an element or ion is affected by the attraction be…
1. B. smaller 2. A. larger 3. C. increases 4. D. decreases
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conclusion: what happens to the total number of atoms during a chemical…
- Conclusion: The total number of atoms remains the same during a chemical reaction. - What a coefficient tells: The number of molecules of a substance. - What a subscript tells: …
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electronegativity is the ability of an element to pull electrons toward…
1. A. negative 2. B. positive 3. D. higher 4. C. lower 5. E. lose 6. F. gain 7. C. lower 8. D. higher
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the group 17/vii elements are known as the halogens. answer the followi…
1. A. true 2. A. true 3. A. true 4. A. true
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question 7 (1 point) __1__ is in group 17/vii and this group is called …
1. D. Cl 2. G. halogens
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the group 18/viii elements are known as the noble gases. answer the fol…
1. A. true 2. B. false 3. B. false 4. B. false
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__1__ is in group 18/viii and this group is called the __2__ a. k b. ca…
1. C. Ne 2. H. noble gases
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question 4 (1 point) saved the group 2/ii elements are known as the alk…
1. B. false 2. A. true 3. A. true 4. A. true
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question 23 1 pts which of the following are compounds found in plants …
B. Phytochemicals
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question 11 the breaking of chemical bonds always requires an additiona…
True
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please use your periodic table as you answer the questions. take your t…
B. valence electrons
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question 8 1 pts which of the following is the branch of science that s…
Epidemiology
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question 4 what is the best definition of a compound? a substance with …
A substance with two or more different atom types bonded together
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question 1 1 pts which of the following is an organic nutrient (contain…
C. Vitamins
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question 3 match the element with the number of bonds it can make: carb…
Carbon: 4 Hydrogen: 1 Nitrogen: 3 Oxygen: 2
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biochemistry quiz t1 2024 2025 started: oct 8 at 9:45pm quiz instructio…
to become stable
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analysis: answer the following questions: 1. which molecules are not co…
1. Molecules made of only one type of element are not compounds, e.g., $O_2$. 2. Plastic sticks can be a simple visual representation but do not show electron - sharing directly. …
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compound, drawing of molecule, how many bonds does each element make? w…
| Compound | How many bonds does each element make? | |--|--| | Ammonia ($NH_3$) | N - 3 single, H - 1 single | | Oxygen ($O_2$) | O - 1 double | | Nitrogen ($N_2$) | N - 1 triple…
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question 3 1 pts this process adds hydrogen atoms to unsaturated fatty …
A. Hydrogenation
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question 2 1 pts this fatty acid does not pack tightly together due to …
C. Unsaturated fatty acid
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(c) what volume of 0.20 m nacl(aq) contains 10.0 g of nacl (molar mass …
$0.86\ L$ (rounded to two significant figures)
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complete the following table: | name | symbol | atomic number | mass nu…
The completed table is shown above.
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(a) ions in a certain volume of 0.20 m nacl(aq) are represented in the …
(a) For the particulate diagram of 0.10 M CaCl₂(aq), draw half as many Ca²⁺ ions as there are Na⁺ ions in the 0.20 M NaCl(aq) diagram and the same number of Cl⁻ ions as in the 0.2…
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question 8 1 pts trans fats are made by a process of adding hydrogen at…
B. Hydrogenation
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1. what is narrative poetry? poetry that is based on a formulaic patter…
C. Poetry that tells a story
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activity c (continued from previous page) 8 make a rule next to subshel…
8A. 5s 8B. 4f 8C. 6p 9. Cobalt (Co): 1s²2s²2p⁶3s²3p⁶4s²3d⁷ Germanium (Ge): 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p² Neodymium (Nd): 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s²4f⁴ Gold (Au): 1s²2s²2p⁶…
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activity c: the diagonal rule get the gizmo ready • on the periodic tab…
1. The feedback is that the electron configuration is incorrect as 4s should be filled before 3d. 2. Yes; [Ar]4s¹ 3. [Ar]4s² 4. [Ar]4s²3d¹ 5. 5 orbitals; 10 electrons 6. Because t…
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activity b (continued from previous page) 6. interpret: select the atom…
6. Trends in atomic radius across periods and groups can be observed. 7. The atomic radius will increase from top to bottom within a chemical family. 8. Hydrogen radius: 37 pm; Li…
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average atomic mass for each element listed below, calculate their aver…
1. $K$: $39.13$ 2. $Cu$: $63.62$ 3. $Si$: $28.11$ 4. $Zr$: $91.32$ 5. $Ne$: $20.18$
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decide whether each row is a set of resonance structures for a single m…
1. yes 2. yes 3. yes 4. yes
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decide whether each row is a set of resonance structures for a single m…
1. yes 2. yes 3. yes 4. yes
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decide whether each row is a set of resonance structures for a single m…
1. no 2. yes 3. yes 4. yes
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16. the change of state from a solid directly to a gas is called ____.
Sublimation
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decide whether each row is a set of resonance structures for a single m…
1. yes 2. no 3. no 4. yes
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decide whether each row is a set of resonance structures for a single m…
1. no 2. yes 3. no 4. yes
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sublimation: solid to gas 15. why is solid carbon dioxide called “dry i…
Solid carbon dioxide is called "dry ice" because it sublimates (changes directly from a solid to a gas) rather than melting into a liquid like regular ice.
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14. for a substance to change from a gas to a liquid, particles must __…
lose energy
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condensation: gas to liquid 12. the change of state from a gas to a liq…
12. condensation 13. its boiling - point
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evaporation: liquid to gas match the correct definition with the correc…
8. b. evaporation 9. c. boiling 10. a. boiling point
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ionic or covalent? 1. n₂ 2. hf 3. co 4. nacl 5. mgo 6. alcl₃ 7. nf₃ 8. …
1. Covalent 2. Covalent 3. Covalent 4. Ionic 5. Ionic 6. Covalent 7. Covalent 8. Covalent 9. Covalent 10. Covalent
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freezing: liquid to solid 6. a substances ______________ is the tempera…
Freezing point
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5. the temperature at which a substance changes from solid to liquid is…
melting - point
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complete the statements. when a substance melts, it changes from the ph…
When a substance melts, it changes from the solid phase into the liquid phase. When this happens, the particles' kinetic energy partially overcomes the intermolecular forces holdi…
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melting: solid to liquid 4. could you use gallium to make jewelry? why …
No, because gallium has a low melting - point and would easily melt under normal wearing conditions.
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2. when a substance changes from one physical form to another, we say t…
physical change
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which statements best describe the process of radioactive decay? check …
An unstable isotope changes until it reaches a different element that is stable. An unstable isotope changes until it reaches a different isotope of the same element that is stabl…
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glucose, a simple sugar, has a melting point of 146°c. which of these d…
above 0°C
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draw the simplest set of curved arrows that shows how the structure on …
1. Lone pairs: Oxygen has 2 lone pairs and nitrogen has 1 lone pair. 2. Curved arrows: Start the first curved arrow from the lone pair on nitrogen and point it towards the adjacen…
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molecule functional group ch₃ - ch₂ - ch₂ - ch = o aldehyde ch₃ | ch₃ -…
Amine, Alcohol, Alkyne