化學
化學反應、化學計量、分子結構與元素性質。
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identifying parts of a chemical equation identify each part of this che…
A. chemical equation B. reactants C. reacts to form D. coefficient E. products
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24. estimate \\( \\delta h^{\\circ} \\) for the following reaction from…
B. -785 kJ/mol
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gas at room temperature c n s liquid at room temperatur au zn hg
Gas at room temperature: N. Liquid at room temperature: Hg.
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member of transition metals mo k cl metalloid sb sr sn
- Member of transition metals: Mo - Metalloid: Sb
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summarize your knowledge: ionic bonding big idea #3: in ionic bonding, …
In IONIC BONDING, the **metal** TRANSFERS its electron(s) to the **non - metal**.
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member of alkali metals na mg al 6 valence electrons as o br
- Member of alkali metals: Na - 6 valence electrons: O
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member of noble gases rb as xe 4 energy levels si ge sn
- Member of noble gases: Xe - 4 energy levels: Ge
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putting it all together based on what you just learned, drag and drop t…
In IONIC BONDING metals transfer their electrons to nonmetals so they all have 8. In COVALENT BONDING nonmetals share their electrons so they all have 8.
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largest atomic radius ga b si largest atomic number v zn cs
# Explicación breve: Para determinar el átomo con el radio atómico más grande entre Ga, B y Si, se considera la tendencia en la tabla periódica. A medida que se baja un grupo, el …
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member of the halogen family p f he greatest electron affinity na c p
- Member of the halogen family: B. F - Greatest electron affinity: B. C
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putting it all together based on what you just learned, drag and drop t…
Ionic Compounds: \(KCl\), \(Fe_{2}O_{3}\), \(MgCl_{2}\), \(CuF_{2}\), \(Rb_{2}S\), \(CaF_{2}\), \(NaBr\) Covalent Compounds: \(N_{2}O_{5}\), \(PH_{3}\), \(SO_{2}\), \(SCl_{4}\), \…
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smallest ionization energy n p as largest atomic mass sc ca k
- Smallest ionization energy: As - Largest atomic mass: Sc
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select the noble gas mg ar ag select the transition metal k i cu
- Select the noble gas: Ar - Select the transition metal: Cu
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select the metalloid f ai si select the halogen ci he b
- Select the metalloid: Si - Select the halogen: Cl
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select the metalloid f ai si select the halogen cl he b
- Select the metalloid: Si - Select the halogen: Cl
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select the nonmetal o zn li select the metal s p na
- Select the nonmetal: O - Select the metal: Na
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after failing her chemistry test, gina was happy to cuddle her puppy an…
C. Affectionate
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recall the postulates of kinetic - molecular theory. read the list and …
- gas particles behave like hard spheres - gas particles travel randomly - average kinetic energy of a collection of gas particles depends on the temperature
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think back to the simulation lab that you did. what is the best explana…
The gas particles collide less often with the walls of the container.
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question 1 (5 points) a ph buffer will fluctuate dramatically in ph. a)…
1. b) False 2. a) True 3. b) False
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properties of gases and gas laws andros hooper example 1 (#15) • a samp…
Pressure, Volume
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a sample of co₂ gas is placed in a 125ml flask where it exerts a pressu…
\(16.875\ mmHg\)
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part 3: understanding information within a text read the following text…
8) Asteroids are generally composed of rock and metal. Comets are composed of frozen gases (such as carbon dioxide, methane, ammonia), water ice, with dust particles and rocky mat…
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which is not a component of a food premises sanitation plan? list of cl…
B. List of pesticides
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true or false: mixing soap and chlorine bleach together has no benefit.…
True
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section 3: ions and electron configurations 1. write the electron confi…
- \(Mg^{2+}\): \([Ne]\) - \(O^{2-}\): \([Ne]\)
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if the volume of the gas stays constant and the moles of gas in the con…
\(P_1/T_1 = P_2/T_2\) (the last option)
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what are the characteristics of fixed poetry? select three options. □ a…
a regular rhyme scheme, lines of equal length, a set number of lines
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read the poem \monets waterlilies\ by robert hayden. today as the news …
There is no rhyme scheme. There is a pattern of stressed syllables.
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the rhyme pattern that occurs at the ends of lines in poetry is called …
a rhyme ending.
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section 2: electron configuration practice instructions: write full ele…
| Element | Atomic Number | Full Configuration | Shorthand Configuration | |---|---|---|---| | Oxygen (O) | 8 | \(1s^{2}2s^{2}2p^{4}\) | \([He]2s^{2}2p^{4}\) | | Calcium (Ca) | 20…
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the article says: an acid is a chemical that can harm things.... acid m…
B. help
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balanced chemical equations quick check use the chemical equation to an…
two
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balanced chemical equations quick check which example is a closed syste…
a sealed jar of salad dressing
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balanced chemical equations quick check in a chemical reaction, two mol…
\(20\space g\)
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balanced chemical equations quick check which parts must be balanced in…
numbers of reactant and product atoms
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balanced chemical equations quick check which statement best describes …
Matter cannot be created or destroyed in a chemical reaction.
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which describes one of oxygens roles in earths atmosphere? allows fuels…
allows fuels to burn
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how does one prepare a 100ppm sanitizing solution of chlorine and water…
C. Add 2mL of chlorine bleach to 1L of water
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which phrase describes air density? o increases as altitude increases e…
equals mass divided by volume
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true or false: adding more sanitizer chemical than needed is better bec…
False
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would sf₄ be classified as ionic or covalent? ionic covalent question 1…
For \(SF_4\): B. covalent For \(AlCl_3\): A. covalent
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5. vinegar, a common household item, is used in cleaning, cooking, baki…
40.0%
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would nabr be classified as ionic or covalent? covalent ionic question …
- \(NaBr\): ionic - \(NH_3\): covalent - \(CoCl_2\): ionic - \(CH_4\): covalent
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the correct formula for titanium(iv) oxide is ti2o4 ti4o tio2 tio4 t2o …
- For titanium(IV) oxide: \(TiO_2\) - For carbon monoxide: \(CO\) - For lead(IV) nitrate: \(Pb(NO_3)_4\)
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question 7 the compound ( pi_3 ) is named monophosphorus iodide phospho…
Question 7: phosphorus triiodide Question 8: tin(IV) oxide Question 9: \(Fe_3P_2\)
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question 4 1 pts na+ represents a sodium ion potassium ion sodium atom …
Question 4: sodium ion Question 5: \( \text{TiO}_2 \) Question 6: \( \text{SO}_3 \)
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question 1 the correct name for licl is lithium(i) chloride lithium chl…
lithium chloride # Question 2
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why the difference matters choosing the right leavening agent affects m…
1. Baking soda reacts with acid to produce \(CO_2\) for leavening. Without acid, no gas is produced. 2. Double - acting baking powder has two leavening stages (wet and heat), more…
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4. most gas grills use propane gas. the formula for propane is c3h8. wh…
I, II, and III
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summarize your knowledge: ionic bonding big idea #4: in covalent bondin…
In COVALENT BONDING, the **non - metal atom** and the other **non - metal atom** SHARE their electrons.
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how many molecules are there in one mole of barium chloride?
\(6.02\times 10^{23}\) (the first option \(6.02*10^{23}\))
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2. a compound has the empirical formula of ch₂o. what is the molecular …
\(C_{6}H_{12}O_{6}\)
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1. directions drag and drop the correct answer choice to each answer bl…
44.01, g/mol
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how some atoms bond explain what is happening in this picture in your o…
- First part: Lithium donates an electron to fluorine to complete fluorine's outer - shell. - Classification: Atom 1 (Li) is a metal atom; Atom 2 (F) is a non - metal atom. - Bond…
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your friend tells you that they are smoking e - cigarettes instead of r…
E - cigarettes are addictive. E - cigarettes contain nicotine. E - cigarette flavorings often contain harmful chemicals.
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check your learning classify each of these compounds as ionic or covale…
- \(NaBr\): Ionic - \(BaS\): Ionic - \(SF_{4}\): Covalent - \(CsF_{2}\): Ionic - \(CaBr_{2}\): Ionic - \(CrCl_{3}\): Covalent - \(OF_{2}\): Covalent - \(CO_{2}\): Covalent - \(NO_…
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check classify each of these compounds as ionic nabr sf₆ cobr₂ of₂ no₂
NaBr: Ionic SF₆: Covalent CoBr₂: Ionic OF₂: Covalent NO₂: Covalent
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classifications of compounds observe the classified compounds here: the…
- The compound \(ZnCl_{2}\) is considered to be a(n) ionic compound. - The compound that contains nitrogen and oxygen (\(N_{2}O_{4}\)) is considered to be a(n) covalent compound. …
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17. (4 pts) a chemist wants to add these 2 measurements together: 2.300…
A. \(2,307,745.6\space mL\)
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what is the volume of the liquid in the following graduated cylinder? m…
23 mL
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which has more mass, a 0.3 g rock or a 30.0 mg rock? the 0.3 g rock the…
The \(0.3\) g rock.
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what causes different colors to appear in the sky? the absorption of li…
the scattering and reflection of light by dust particles
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what happens to the particles of a substance as its temperature increas…
They move faster.
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iclicker question 2 (3 mins) to improve air quality and obtain a useful…
II and IV are true.
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1. what type of energy is stored due to an objects position, condition,…
1. B. Potential energy 2. B. Kinetic energy 3. B. Elastic potential energy 4. A. Energy is transferred back to the person 5. B. Energy transformation 6. A. An unbalanced force act…
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write an informative essay comparing and contrasting the three primary …
An informative essay comparing and contrasting yeast, baking soda, and baking powder as leavening agents would first define leavening agents as substances that produce gas to make…
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storing food on shelves at least 15 cm (6 inches) off the floor will he…
prevent contamination of food
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the part of the atom that is important in creating bonds with other ato…
electron
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a pure substance made of two different elements bonded together is call…
compound
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an atom has a mass number of 40 and contains 19 protons. how many neutr…
C. 21
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it is important that when you write an element symbol, the first letter…
True
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a sand and water mixture would be considered * 1 point a compound a hom…
a heterogeneous mixture
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isotopes of an element have different numbers of ________, which result…
neutrones, números de masa
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the mass number of an atom is 52 and the atomic number is 24. which ele…
Chromium
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how does phosphorus - 32 differ from phosphorus - 31? they are identica…
Phosphorus - 32 has one extra neutron.
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the vertical columns on the periodic table are called * blocks periods …
groups
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all matter can be divided into * 1 point substances and mixtures elemen…
substances and mixtures
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the horizontal rows on the periodic table are called * blocks grids gro…
periods
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an atom has a mass number of 14 and an atomic number of 6. how many ele…
# Explicación paso a paso: ## Paso 1: Recuerda la relación entre el número atómico y los electrones En un átomo neutro, el número de electrones es igual al número atómico. El núme…
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an atom is neutral because it has the same number of and 1 p protons, n…
protons and electrons
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an atom is neutral because it has the same number of and 1 point prot…
protons and electrons
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temperature. a(g) + b(g) ⇌ 2c(g) kp = 1.56 d(g) + 3a(g) ⇌ 2e(g) kp = 22…
D. \(0.166\)
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the average atomic mass of gold, atomic number 79 is 79 amu 275.97 amu …
196.97 amu
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choose the following that is a homogeneous mixture: * 1 point a mixture…
soda in an unopened bottle
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which of the following is an element: * 1 point air oxygen fire water
oxygen
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how many neutrons does this isotope of copper have? 2 points 63 29 cu 9…
34
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a sugar and water mixture would be classified as * 1 point an alloy a p…
C. a homogeneous mixture
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the subatomic particle that gives an atom its identity (it does not cha…
proton
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the electrons 1 point are the same in number as the protons in a neutra…
are the same in number as the protons in a neutral atom
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the number of protons and neutrons of this isotope of copper the number…
elements or compounds
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what does the number 63 represent? 1 point 63 29 cu the number of proto…
the number of protons and neutrons of this isotope of copper
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the proper way to indicate the isotope of carbon (atomic number 6) that…
Carbon - 14
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the periodic table is arranged by increasing atomic number 1 point grou…
True
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calculate the atomic mass of element x. 19.0% of the isotopes have a ma…
A. Boron (B)
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the starting substances in a chemical reaction are the? chemicals solid…
C. reactants
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an atom has 40 electrons. which element is it? zirconium argon potassiu…
# Explicación breve: En un átomo neutral, el número de electrones es igual al número atómico (Z). Si un átomo tiene 40 electrones, su número atómico es 40. El elemento con número …
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the new substances formed in a chemical reaction are called the * 1 poi…
A. products
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in a certain chemical reaction compound a combines with compound b to p…
For theoretical yield: \(10.6\) g For actual yield: \(8.0\) g
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during the hazard analysis stage of haccp, what type of food safety ris…
# Brief Explanations: HACCP (Hazard Analysis and Critical Control Points) is a systematic preventive approach to food safety. During the Hazard Analysis stage, all potential risks…