Chemistry
Chemical reactions, stoichiometry, molecular structures, and element properties.
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an isotope varies from other isotopes of the same element by the ______…
C. number of neutrons ### Question 6
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matching 5 points match each vocabulary word to its definition. an atom…
- An atom that has gained or lost electrons: Ion - Atoms of the same element with varying numbers of neutrons: Isotopes - The weighted average of the masses of all naturally occur…
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a. spoon th vocabulary word to its definition. atomic particle that has…
1. atomic particle that has mass but NO charge - Neutron 2. atomic particle that has POSITIVE charge and mass - Proton 3. number of protons in an atom - Atomic number 4. total num…
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sulfur (s) is in group 16 on the periodic table. if sulfur were to bond…
For the sulfur question: 2 bonds. For the beryllium question: \(2+\).
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magnesium (mg) is #12 on the periodic table and is found in group 2 (2a…
For Magnesium: Magnesium likely to lose electrons to become stable. For Nitrogen: Nitrogen likely to gain electrons to become stable.
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question 19 2 pts which of the following elements is not reactive (will…
Argon (Ar)
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which statement about atoms of elements in the same group of the period…
They share the same number of valence electrons.
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which of the following bond types is an intermolecular force and not an…
hydrogen bond
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read the sentence. open his chemistry book, trevor knew he had a long n…
Opening
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question 16 which two atoms could potentially form an alloy? carbon (c)…
Copper (Cu) and zinc (Zn)
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question 15 what type of matter do alloys fall under? a pure substance …
C. Mixture
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question 14 how many electrons are being shared in one single covalent …
2 electrons
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what kind of bond is found between carbon and oxygen in the carbon diox…
double bond
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how many total covalent bonds are there in one molecule of carbon dioxi…
4 covalent bonds
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what ion will be formed by the sulfur atom shown below when it has a st…
\(S^{2 -}\)
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what is the formula for lithium phosphide? li^{1+} p^{3-} li_{3}p_{3} l…
\(Li_{3}P\) (corresponding to the second option \(Li_{3}P\))
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which of the following is the best description of how electrons are tra…
A. A metal atom loses electrons and a nonmetal atom gains electrons.
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what is the name for mgbr₂? magnesium bromine dimagnesium bromide magne…
For the first question: Magnesium bromide. For the second question: Potassium (K).
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what type of chemical bond is in copper metal of the copper cooking pan…
metallic bond
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question 5 2 pts what type of elements do you typically find in covalen…
only nonmetal elements
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question 4 what type of elements do you typically find in ionic compoun…
metal + nonmetal element
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what type of chemical bond hold the hydrogen atoms to the oxygen atom i…
B. Covalent bond
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what type of chemical bond is in your table salt, sodium chloride? nacl…
Ionic bond.
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why do atoms form chemical bonds with other atoms? to get more protons …
to get a full octet of valence electrons
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4) type of reaction: combustion ch4 + o2 → co2 + h2o 5) type of reactio…
For \(CH_4+\underline{2}O_2 ightarrow\underline{1}CO_2+\underline{2}H_2O\) and for \(H_2O+\underline{1}SO_3 ightarrow\underline{1}H_2SO_4\)
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multiple choice 10 points what mass of gold would require 475,500 j to …
35.1 Kg (corresponding to the option "35.1 Kg")
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which statement is true about a chemical reaction? a the physical state…
D. All of the atoms in the reactants will be a part of the products.
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this is a chemical reaction for the decomposition of carbonic acid into…
C. The mass of the atoms in the reactant equals the mass of the atoms in the products.
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two different liquids are poured together in an open container. bubbles…
A. Some of the atoms during the reaction escaped into the air.
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2 this table provides information about some group 1 elements.which is …
B. $40^{\circ}C$
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3 how does a balanced chemical equation satisfy the law of conservation…
A. During a chemical reaction, the total amount of matter stays the same.
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2. the general formula for a single replacement reaction would be: ab +…
\(AB + C ightarrow CB + A\)
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complete the lewis dot structure for the following elements. state how …
0 electrons will be (neither gained nor lost, but in the boxed form for the number: $\boxed{0}$), and for the gain/loss, since it's stable, but if we have to pick, maybe the quest…
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which alcoholic drink has a proof of 80 to 151? champagne liquor beer w…
liquor
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name write the electron configuration for each element below. draw arro…
s: 1. Potassium (K): \(1s^2 2s^2 2p^6 3s^2 3p^6 4s^1\) 2. Carbon (C): \(1s^2 2s^2 2p^2\) 3. Titanium (Ti): \(1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^2\) (or \(1s^2 2s^2 2p^6 3s^2 3p^6 3d…
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the correct order of stability of the following carbanions is? i. ii. i…
4) III < I < II
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malic acid is an organic compound that boosts energy, enhances immunity…
Malic acid content affects the taste of apples.
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extra credit: (worth up to +1 point each) 1. complete the chart below, …
### Question 1: Completing the Element Chart To solve this, we use the properties of neutral atoms: - Atomic number = number of protons (\( p^+ \)) = number of electrons (\( e^- \…
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15. what are the names of the following two pieces of lab equipment?
Upper: Test Tube Lower: Beaker
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12 where do we find conductors on the periodic table? (1 point) on the …
To the left of the staircase
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21 what type of bonds will form between a mg and o atom? ionic or coval…
The bond formed between a Mg and O atom is an IONIC bond. ### Part 2: Electron Movement and Lewis Structure
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complete the sentence using oxalate, oxic or oxide. a binary ionic comp…
oxide
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the correct name for kn is potassium nitrate true false
FALSE
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which of the following is not a binary compound? a $k h_{2} p o_{4}$ b …
a. $KH_2PO_4$
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what is the name of the compound caf₂ a none of these are correct b car…
d. Calcium fluoride
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what is the correct name for the monatomic ion of o^{-2}? a oxalate b o…
d. Oxide
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when writing the name or formula for an ionic compound, the order they …
d. metal cation first then non - metal anion
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what is the name of the compound formed from na^{+1} and p^{-3}? a sodi…
d. sodium phosphide
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a ionic compound is a type of ionic compound composed of a monatomic me…
binary (or Type I)
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choose the name of a cubr₂ compound. a copper bromine b lithium iodide …
d. Copper (II) Bromide
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choose the name of a $mgcl_{2}$ compound. a cupric bromide b magnesium …
B. Magnesium chloride
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1) select the net ionic equation for the reaction that occurs when sodi…
$\boldsymbol{\ce{Fe^{3+}(aq) + 3OH^{-}(aq) ightarrow Fe(OH)_3(s)}}$ (the option with this equation)
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5) a neon sign is made from a glass tube 5.5 m long and with an inner d…
Approximately \(\boxed{0.005}\) grams (or more precisely, around 0.0050 grams).
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2. which of the following is the best description of how electrons are …
A. A metal atom loses electrons and a nonmetal atom gains electrons
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1. what ion will be formed by the phosphorus atom shown below when it h…
\(P^{3-}\) (corresponding to the option with \(P^{3-}\))
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a sample of $n_{2}(g)$ is in a container with a piston. the sample of $…
B. \(0.279\space L\)
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15 mark for review a balloon that contains a sample of gas at room temp…
A. The gas particles in the balloon have a lower average kinetic energy at the lower temperature, so they collide with the inside of the balloon less frequently and with less kine…
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two containers are filled with he(g) under the conditions shown in the …
Neither option A nor option B is correct. The average speed of gas molecules depends on temperature (\(v_{avg}\propto\sqrt{T}\)), not on volume or pressure. Since \(T_X = 298\spac…
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7. among the following, the most stable cation is 1) 2) ph - \\( \\stac…
2) \(Ph - \overset{+}{C}H_2\)
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the diagram shows two identical, rigid containers with different amount…
B. There are more collisions between gas particles and the walls of container Y.
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7. among the following, the most stable cation is 1) 2) ph - \\( \\stac…
2) \(Ph-\overset{+}{C}H_2\)
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the heat of fusion of nacl(s) is 0.48 kj/g. how much heat is absorbed w…
B. \(9.6\space kJ\)
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select all the correct answers. which of the following lines from of pl…
B. "But about the 16th of March a certain Indian came boldly amongst them, and spoke to them in broken English, which they could well understand, but marveled at it." C. "Being, a…
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santa baby, a platinum mine natalie burclaff by the 1920s, platinums in…
B. Platinum's increase in popularity led to its importance in the field of manufacturing.
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identify each statement as applying to either mechanical solidarity or …
Mechanical Solidarity: Social cohesion arises through people being similar to one another; It is characteristic of small societies. Organic Solidarity: Social cohesion arises by e…
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the diagram shown is a heating curve for a pure substance. which of the…
C. The substance is in the liquid phase, and the temperature of the liquid is increasing.
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which of the following diagrams best represents the $c_{2}h_{2}$ after …
A. Option A
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the following diagram represents c₂h₂(l). which of the following diagra…
A.
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which of the following is most stable intermediate?
4.
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the table contains a list of compounds and their melting and boiling po…
C. \(NF_3\)
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hurricanes often increase in strength as they travel over warm tropical…
B. Energy is released as water vapor condenses.
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1) use the solubility table and classify each compound as water soluble…
- \( \ce{Ni(OH)2} \): Water insoluble - \( \ce{KCl} \): Water soluble - \( \ce{Li3PO4} \): Water soluble - \( \ce{Ni(NO3)2} \): Water soluble
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5. which characteristic of realism is still evident in most poetry writ…
the use of simple diction instead of lofty language
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3. which is a major characteristic of contemporary poetry today? the re…
C. experimentation and the adaptation of poetic rules
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1) when observed independently, which of the following are indications …
- Temperature change - Formation of a precipitate - Change in odor
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when a log is burned, its chemical energy is transformed into heat and …
The amount of chemical energy is more than the amount of heat and light energy (the third option in the list of choices, i.e., the option with the text "The amount of chemical ene…
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what do the polar - shaped molecules have in common that the nonpolar o…
Polar - shaped molecules have a net dipole moment (an uneven distribution of electron density leading to partial charges) which non - polar molecules do not have.
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beating a drum represents what kind of energy conversion? electrical to…
B. mechanical to sound
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1. if 98.0 g b2o3 (69.62 g/mol) and 125 g hf (20.01 g/mol) are combined…
b. \(25.5\ g\ B2O3\) will be left over.
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the following particle diagram represents the heating of solid gallium …
C. When the gallium is heated, the motion of the particles increases, so the particles can partially overcome the attractive forces between them.
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read the sentence. 1 alejandros guidance counselor is helping him plan …
sentence 3
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6. silicon nitride is a very hard, high - temperature - resistant ceram…
\(3Si + 2N_2 ightarrow Si_3N_4\) ### Part b
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13. which of the following is a weak acid? a. hydrobromic, hbr b. hydro…
C. hydrofluoric, HF ### Question 14
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12. which of the following would behave as a strong electrolyte in wate…
e. Vanadium (III) Oxide, \(V_2O_3\)
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10. what volume of 12.0 m hcl solution needs to be diluted to produce 5…
A. \(0.125\space L\)
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9. what volume of 2.50 m naoh (40.00 g/mol) contains 0.100 mole of naoh…
B. \(40.0\space mL\)
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8. calculate the molarity of a solution that contains 0.0289 mol k2so4 …
C. $0.0578\space M$
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read this stanza from allen ginsbergs \a supermarket in california.\ wh…
C. The long - line structure imitates stream - of - conscious thought.
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read this excerpt from walt whitmans poem \i hear america singing\ from…
A. present a poem with a natural, conversational rhythm.
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when using chemical sterilization, how long do ments need to be submerg…
10 hr
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scientists recently discovered that rocks collected from the franklin m…
D. plate tectonics
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read the paragraph. 1 alejandros guidance counselor is helping him plan…
sentence 4
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read the paragraph. 1 ji - yoo is brainstorming topics for a term paper…
sentences 3 and 6
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5. hydrogen gas and oxygen gas react to form water vapor. suppose you h…
a. \(2H_{2}(g)+O_{2}(g) ightarrow 2H_{2}O(g)\) b. \(O_{2}\) is the limiting reactant c. \(3.376\space g\) of \(H_{2}\) is left d. The percent yield is approximately \(71.5\%\)
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read the excerpt from \we wear the mask\ by paul laurence dunbar. we sm…
rhyme scheme
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read the excerpt from \on imagination\ by phillis wheatley. now here, n…
It creates a pensive tone that shows the speaker's feelings on the power of imagination.
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4. vanillin, the active component of the flavoring vanilla, has the com…
a. The empirical formula of vanillin is \(C_{8}H_{8}O_{3}\)
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3. what is the name of the group that is electrically neutral? alkali m…
D. Carbon family
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2. what is a group (family)? mark all that apply vertical columns horiz…
A. Vertical columns D. Tells the number of valence electrons if a main group element
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1. what is a period? mark all that apply vertical columns horizontal ro…
B. Horizontal rows, C. Tells main energy level