Chemistry
Chemical reactions, stoichiometry, molecular structures, and element properties.
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name ______ period a chemistry single replacement reaction worksheet pr…
1. $Pb(NO_3)_2 + 2KI ightarrow PbI_2 \downarrow + 2KNO_3$ 2. $CuSO_4 + 2NaOH ightarrow Cu(OH)_2 \downarrow + Na_2SO_4$ 3. $Li_2SO_4 + 2NH_4NO_3 ightarrow 2LiNO_3 + (NH_4)_2SO_4$ (…
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stoichiometry - grams & moles calculations **success criteria: i can ca…
1. 0.306 moles 2. 12.40 moles 3. 1.31 moles 4. 0.00678 moles 5. 3.81 moles 6. 8.88 moles 7. 0.279 moles 8. 0.201 moles 9. 462.36 grams 10. 437.40 grams 11. 4203.34 grams 12. 159.7…
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9. ______ is a critical process for non-reverse osmosis purification. i…
9. a. Ozone 10. c. Hardness
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earth space chapter 9 review across 1. dark, organic material that rema…
Across: 1. HUMUS 4. MUDFLOW Down: 2. SLUMP 3. ROCKFALL
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6. ______ is the strongest oxidant and strongest disinfectant available…
6. a. Ozone 7. d. b and c are correct
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Question was provided via image upload.
11) $2\text{Li} + 2\text{H}_2\text{O} ightarrow 2\text{LiOH} + \text{H}_2$ 12) $2\text{HgO} ightarrow 2\text{Hg} + \text{O}_2$ 13) $3\text{Ca(NO}_2\text{)}_2 + 2\text{H}_3\text{PO…
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bend and stretch = structure and function of designed materials student…
Evidence: The C-F bond (485 kJ/mole) has higher bond energy than the C-H bond (413 kJ/mole). Reasoning: Stronger C-F bonds in PTFE require more energy to break, so PTFE is stable …
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jocelyn and her friends put some raisins, hazelnuts, almonds, and peanu…
a mixture
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part 1. complete each question using your bag of candy. show all work t…
1. 12 2. (Completed Table 1 below) 3. (Completed Table 1 below) 4. Orange, $\ce{^{7.01}O}$ (Orange-7.01) 5. 41% (highest percentage abundance) 6. ~5.78 (predicted average atomic m…
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a student selects two identical glasses, labels them p and q, and fills…
Sugar dissolves completely in glass P, and sand settles at the bottom of glass Q.
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packing peanuts are commonly used as shipping material. some are manufa…
☑ Cornstarch Evidence: Cornstarch has polar -OH groups in its molecular structure that form hydrogen bonds with water, making it water-soluble and biodegradable, so it does not co…
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three students are mixing the same type of solute in 500 ml of water. j…
Hunter → Jessica → Larry
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ii. prelab questions (answer questions in your notebook): 1. what is th…
1. $2\text{Mg} + \text{O}_2 ightarrow 2\text{MgO}$ 2. Limiting reactant: $\text{Mg}$ (it is the finite reactant being burned); Excess reactant: $\text{O}_2$ (unlimited supply from…
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oil and water placed in a jar will separate. even when shaken and mixed…
Oil and water have a low solubility because they have separate chemical properties.
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naomi has increased the pressure on a solution of liquid and gas in a c…
increase the amount
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four solutes are added to a solvent. all solutes have the same mass and…
10 mm²
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ii. prelab questions (answer questions in your notebook): 1. what is th…
1. $2\text{Mg} + \text{O}_2 ightarrow 2\text{MgO}$ 2. Limiting reactant: $\text{Mg}$ (it is the finite reactant being burned); Excess reactant: $\text{O}_2$ (unlimited supply from…
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maureen adds a spoonful of salt to a glass of cold water. which of the …
stirring the mixture
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read the list below: 1. sugar 2. pepper 3. lemon juice 4. carbon dioxid…
2 and 6 only
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explain to the people of westfield how the rust in their water formed.
Rust in your water forms through a chemical reaction involving the iron in your water pipes, oxygen, and water: 1. Iron from pipes reacts with dissolved oxygen and water to form i…
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3. a new childrens toy company is designing its logo. select the respon…
○ They should consider colors that are red and yellow to set the mood of energy, excitement, and youth.
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phosphorus atomic number atomic mass number of protons number of electr…
### Phosphorus | Category | Value | |------------------------|-------| | Atomic Number | 15 | | Atomic Mass | 31 | | Number of Protons | 15 | | Number of Electrons | 15 | | Number…
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boron atomic number atomic mass number of protons number of electrons n…
### Boron Table: | Category | Value | |------------------------|-------| | Atomic Number | 5 | | Atomic Mass | 11 | | Number of Protons | 5 | | Number of Electrons | 5 | | Number …
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question 1 of 15 which sentence describes a villanelle? a. it has 14 li…
C. It uses three-line stanzas and often repeats lines.
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questions to address in your conclusion: 1. what is the expected mole r…
The expected mole ratio of chlorine to magnesium is $\frac{2}{1}$ (or 2:1).
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marine debris is best described as being composed of _______. a. solid …
d. things discarded by humans
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lab #4 – empirical formula of a compound repo. name: anarec sasmiento l…
Average ratio of moles of chlorine to moles of magnesium: $18.9$ Empirical formula of magnesium chloride: $\text{MgCl}_{19}$ (Note: This non-standard result suggests possible expe…
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date trial 1 trial 2 mass of evaporating dish 46.0618g 45.5867g mass of…
Trial 1: 18.84 Trial 2: 18.96
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which statement best explains how the aswan high dam contributes to pol…
The dam affects the soil, which causes farmers to use fertilizers that create pollution.
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what is the ph for a solution with $oh^- = 8.9 \\times 10^{-9}$ m? resp…
$5.9\text{E}0$
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question 13 mark as: none calculate $\\text{h}_3\\text{o}^+$ for a solu…
For Question 13: $5\text{E-5}$ For Question 14: $5\text{E-6}$
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match each solution with its correct ph description. drag and drop opti…
soap = basic tea = acidic toilet bowl cleaner = acidic orange juice = acidic drain clog remover = basic
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question 7 mark as: none match each compound from the premise column wi…
- $\text{H}_2\text{O}$ = both amphiprotic and amphoteric - $\text{MnO}_2$ = amphoteric only - $\text{SnO}$ = amphoteric only - $\text{HS}^-$ = both amphiprotic and amphoteric
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question 6 mark as. none calculate the hydroxide ion concentration for …
3.6E-10
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1. $ce{k_{2}o + h_{2}o -> koh}$2. $ce{ni(clo_{3})_{2} -> nicl_{2} + o_{…
1. $K_2O + H_2O \to 2KOH$ 2. $Ni(ClO_3)_2 \to NiCl_2 + 3O_2$ 3. $2Al + 3CuO \to Al_2O_3 + 3Cu$ 4. $C_2H_4 + 3O_2 \to 2H_2O + 2CO_2$ 5. $2AlBr_3 + 3K_2SO_4 \to 6KBr + Al_2(SO_4)_3$…
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method 1: convert $oh^-$ to $h_3o^+$ first, then insert $h_3o^+$ direct…
Question 15.16: $6.0\text{E}0$ Question 15.17: $6.0\text{E}0$
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in precision from two to four decimal places (figure 15.9) the fact tha…
Question 15.14: $5\text{E-5}$ Question 15.15: $5\text{E-6}$
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match each solution with its correct ph description. drag and drop opti…
soap = basic tea = acidic toilet bowl cleaner = acidic orange juice = acidic drain clog remover = basic
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question 15.9 mark as: none rank the following acids by the amount of $…
1. 1.6 M HCl 2. 1.2 M HBr 3. 1.2 M HF
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7. valence electrons are important because they help determine an eleme…
B. chemical behavior
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according to the reading, this law made it illegal to obstruct the draf…
First question: a. The Espionage Act Second question: d. The discovery of the Zimmerman telegrams
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question 15.8 mark as: none match each compound from the premise column…
- $\text{H}_2\text{O}$ = both amphiprotic and amphoteric - $\text{MnO}_2$ = amphoteric only - $\text{SnO}$ = amphoteric only - $\text{HS}^-$ = both amphiprotic and amphoteric
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calculate the hydroxide ion concentration for a solution with $h_3o^+_{…
3.6E-10
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compound: p₄c mass of compound: 67.20g molar mass: \tconvert mass to mo…
| Compound | Molar Mass (g/mol) | Moles | |----------|---------------------|-------| | $\text{P}_4\text{C}$ | $135.89$ | $0.495$ | | $\text{Mg}_3(\text{PO}_4)_2$ | $262.87$ | $0.1…
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question 15.1 mark as: none what is the name of the compound present in…
Water (or $\text{H}_2\text{O}$)
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measuring moles lab you will visit 8 weighing stations. make note of ea…
1. **Carbon** - Molar Mass: $12.01\ \text{g/mol}$ - Moles: $10.86\ \text{mol}$ 2. **Silicon** - Molar Mass: $28.09\ \text{g/mol}$ - Moles: $0.728\ \text{mol}$ 3. **NaCl** - Molar …
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15) ___ag + ___f₂ → ___agf 16) ___k₂s + ___sr(clo₃)₂ → ___kclo₃ + ___sr…
15) $2\text{Ag} + \text{F}_2 ightarrow 2\text{AgF}$ 16) $\text{K}_2\text{S} + \text{Sr(ClO}_3\text{)}_2 ightarrow 2\text{KClO}_3 + \text{SrS}$ 17) $2\text{Na} + \text{ZnCO}_3 ight…
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heat transfer in earths systems understanding heat movement the sun pow…
1. Radiation 2. Conduction
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which item is not used by lady macbeth as a symbol in lines 58-67? sele…
1. b. flower 2. b. She wants to be in charge of tonight's major scheme.
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Question was provided via image upload.
11) $2\text{Li} + 2\text{H}_2\text{O} ightarrow 2\text{LiOH} + \text{H}_2$ 12) $2\text{HgO} ightarrow 2\text{Hg} + \text{O}_2$ 13) $3\text{Ca(NO}_2\text{)}_2 + 2\text{H}_3\text{PO…
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5. biomass energy is derived from what? nuclear waste byproducts. organ…
Organic materials like plants.
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name:period:date:chemistry testbalancing & types of chemical reaction**…
1. SR (Single Replacement) 2. D (Decomposition) 3. C (Combustion) 4. S (Synthesis) 5. DR (Double Replacement) 6. D (Decomposition) 7. C (Combustion) 8. SR (Single Replacement) 9. …
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directions: create a bohr model of an atom by dragging each subatomic p…
- Nucleus (inner blue circle): 13 protons, 14 neutrons - Innermost orbit: 2 electrons - Middle orbit: 8 electrons - Outermost orbit: 3 electrons
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what does the temperature of a substance directly measure? the chemical…
The average kinetic energy of its particles
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6. how many hydrogen atoms are present in one formula unit of ammonium …
6. b. 8 7. a. 1:1. 8. d. 54.94 g/mol. 9. b. 41.99 g/mol. 10. d. 342.17 g/mol.
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1. the atomic number of neon is 10. what is the average atomic mass of …
1. c. 20.180 amu 2. a. 27.94 amu 3. c. 10.812 amu 4. d. hydrogen has more than 1 isotope. 5. c. 6 mol H
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bohr model quiz draw the bohr model for the following elements. 1. mg⁺²…
1. $\text{Mg}^{2+}$ Bohr Model: - Nucleus: Labeled $\text{Mg}^{2+}$ (contains 12 protons, 12 neutrons) - Energy Level 1: 2 electrons - Energy Level 2: 8 electrons 2. $\text{Cl}$ B…
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name:the road not takenby robert frosttwo roads diverged in a yellow wo…
1. A-B-A-B 2. "In leaves no step had trodden black." 3. First-person point of view 4. "Because it was grassy and wanted wear;" 5. "Because it was grassy and wanted wear;" 6. Refle…
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bohr model quiz draw the bohr model for the following elements. 1. mg⁺²…
1. $\text{Mg}^{2+}$ Bohr Model: - Nucleus: Labeled $\text{Mg}^{2+}$ (contains 12 protons, 12 neutrons) - Energy Level 1: 2 electrons - Energy Level 2: 8 electrons 2. $\text{Cl}$ B…
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name:the road not takenby robert frosttwo roads diverged in a yellow wo…
1. A-B-A-B 2. "In leaves no step had trodden black." 3. First-person point of view 4. "Because it was grassy and wanted wear;" 5. "Because it was grassy and wanted wear;" 6. Refle…
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name:period:the road not takenby robert frosttwo roads diverged in a ye…
1. $A,B,A,B,B$ 2. "In leaves no step had trodden black." 3. First-person (I/me/my perspective) 4. "Because it was grassy and wanted wear," 5. "Because it was grassy and wanted wea…
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1. when the molecules of gases are heated, the average kinetic energy o…
1. True 2. True 3. True
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what does the creature think causes felix, agatha, and delacey to be un…
1. c. The hardship of poverty. 2. b. Lucretius
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why are physical properties such as hardness or cleavage useful to geol…
D. Physical properties are unique to each mineral and are determined by the mineral's chemical composition and atomic structure
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level: 3 challenge 5 of 5 score: 5 start over $4\\ nh_3 + 6\\ no \ ight…
- $\text{N}_2$: 5 - $\text{H}_2\text{O}$: 6 - Leftover $\text{NH}_3$: 0 - Leftover $\text{NO}$: 0 The product box should contain 5 $\text{N}_2$ (blue-blue molecules) and 6 $\text{…
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a sample contains carbon and hydrogen in the amounts shown in the data …
D. 25%
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a 48 g sample is composed of 38 g of fluorine (f) and 10 g of boron (b)…
79%
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which element does the electron configuration $1s^22s^22p^2$ represent?…
C. C
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identify the following as an element or compound. chromium(ii) oxide (c…
compound
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in which block of the periodic table is uranium (u) found? ○ s block ○ …
f block
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how is this substance classified? it has the formula xz. a homogeneous …
a compound
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which of these techniques can be used to effectively separate an undiss…
settling, then decantation
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unit exam - matter and change what separation technique is illustrated …
evaporation
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which of these mixtures would best separate using distillation?powdered…
honey and tea
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which is the electron configuration for lithium? 1s² 2s³ 1s²2s¹ 1s¹2s²
): $1s^2$ ## Step3: Remaining electron to 2s orbital 1 electron left, fills the 2s orbital: $2s^1$ ## Step4: Combine orbitals Combine to get full configuration: $1s^22s^1$
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which element has 32 protons in its nucleus?○ phosphorus○ cobalt○ germa…
germanium
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what technique effectively separates mixtures of liquids that have diff…
distillation
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classify the following as a heterogeneous mixture (suspension), homogen…
homogeneous mixture (solution)
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what did kittys mother mistakenly think was causing the unusual smell a…
Roasting chickens
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which substance is a mixture? ○ table salt ○ gasoline ○ aluminum ○ carb…
gasoline
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unit exam - matter and change compare the total mass of the reactants t…
161 g ZnSO₄ → 81 g ZnO + 80 g SO₃
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air is made up of different gases, such as oxygen, nitrogen, and carbon…
compound substance; all meet the definition of pure substances (uniform, unchanging composition). The other options are incorrect: these substances can react with other chemicals …
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unit exam - matter and change compare the total mass of the reactants t…
161 g ZnSO₄ → 81 g ZnO + 80 g SO₃
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which statement best describes how electrons fill orbitals in the perio…
Electrons fill orbitals in order of their increasing energy from left to right.
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unit exam - matter and change which of these changes is an example of a…
polishing a gemstone
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which of these changes is an example of a chemical change? broken glass…
cooking an egg
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in which orbitals would the valence electrons for selenium (se) be plac…
s orbital and p orbital
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unit exam - matter and change menthol section 2: health hazards liquid …
toxic if used with personal protective equipment
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a single atom of an element has 11 protons, 11 electrons, and 12 neutro…
B. Na
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which of these is an example of a physical property? sodium oxidizes in…
Table salt is a white crystal.
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iron, an element with the chemical symbol fe, is an important element. …
with a high probability of containing the electron) around the nucleus. The other statements are consistent with both Dalton's theory and modern atomic theory: Dalton proposed ele…
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to show the electron configuration for an atom, when would it be better…
electrons in subshells. Orbital notation (e.g., box diagrams) explicitly represents individual orbitals and can show the spin state of each electron using arrows, which written co…
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which physical method can be used for obtaining a sample of salt from a…
ing is for separating solid mixtures, not dissolved solids from liquids.
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which pure substance can be classified as an element? $ce{h_{2}}$ $ce{n…
atoms, so it is an element. - $\text{NO}_3$: Contains nitrogen + oxygen, compound. - $\text{NaCl}$: Contains sodium + chlorine, compound. - $\text{H}_2\text{SO}_4$: Contains hydro…
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which of the following symbols would be included in the noble gas notat…
number 36, which ends the 4th period). Kr's electron configuration is $[Ar] 3d^{10} 4s^2 4p^6$, so elements with 5s valence electrons use Kr as the noble gas core.
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select the correct answer which of these periods contain elements with …
D. periods 6-7
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select the correct answer which of these elements has four total electr…
D. sulfur (S)
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3 select the correct answer which of these elements is an alkaline eart…
B. calcium (Ca)
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select the correct answer how does the modern periodic table arrange el…
B. by atomic number
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1 select the correct answer. which of the following elements is an alka…
A. potassium (K)