Chemie
Chemische Reaktionen, Stöchiometrie, Molekülstrukturen und Elementeigenschaften.
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instructions in each question, list the elements from least to greatest…
4. \(In < Sb < Te\) 5. \(Po < S < O\) 6. \(Li < C < N\)
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instructions: in each question, identify the element with the greatest …
1. Fluorine (F) 2. Chlorine (Cl) 3. Zinc (Zn)
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answer the question correctly to continue: two engineers disagree about…
The engineer who suggests aluminum, because it is a metal that resists corrosion.
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complete the rhyme scheme. a a b b b c never yet was a springtime, late…
A, B, C, B, A, B
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answer the question correctly to continue: what do metalloids have in c…
They have properties of both groups.
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complete the rhyme scheme. a a b b c c when i was down beside the sea a…
A, A, B, C, C, C
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complete the rhyme scheme. a a b b c c who comes dancing over the snow,…
A, B, A, B, C, C
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instructions: in each question, identify the element with the greatest …
1) Iodine ($I$) 2) Oxygen ($O$) 3) Xenon ($Xe$)
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answer the question correctly to continue: what is the atomic number of…
The number of protons
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answer the question correctly to continue! what type of element is most…
metal
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instructions: in each question, list the elements from least to greates…
4) \(Na<K<Cs\) 5) \(P<Al<Mg\) 6) \(O<Zn<Rb\)
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instructions: in each question, identify the element with the greatest …
1) Lead (Pb) 2) Sodium (Na) 3) Barium (Ba)
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question 13 how do organic compounds differ from inorganic compounds? i…
Organic compounds consist of carbon atoms joined by covalent bonds, while inorganic compounds lack carbon - carbon bonds.
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powder bed fusion technologies (sls) use the information below to answe…
a thermoplastic polymer powder
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hydrogen peroxide can be used to disinfect and clean surfaces around th…
For \(H\): 12 For \(O\): 12 Number of \(H_2O_2\) molecules: 6
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pbf: benefits and limitations use the information below to answer the q…
complex geometry
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support structures use the information below to answer the question. ne…
powder - based printing
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question: how are atoms different from one another? 1. observe: the ato…
A. Hydrogen B. H
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the image shows a speaker plugged into a socket. what type of energy tr…
A. electrical to sound
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a water sample shows 0.03 grams of some trace element for every cubic c…
\(100.8\) grams
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label the diagram word bank: proton, neutron, electron, electron cloud,…
15. neutron 17. nucleus 18. proton 19. electron
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destiny is riding her bicycle along a sidewalk. what is a type of energ…
D. chemical to kinetic
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5 which of the following choices describes an investigation in which a …
B. A student drops a sugar cube in water and mixes a tablespoon of loose sugar in a second container of water to see which one dissolves more quickly.
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the diagram shows a simple electrical circuit. what type of energy tran…
A. chemical to electrical to light
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apply the concepts write the letter of the correct answer on the line a…
14. A. atoms 15. C. 2 to 1
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when lisa practices the trumpet, she notices that the windows in her ro…
C. Energy carried by a longitudinal wave is transformed to kinetic energy.
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question 1 chapter test: energy text to speech reference sheet calculat…
C. flowers using sunshine to grow
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3 a student in a laboratory wants to increase the concentration of salt…
C. Heat the solution, causing some of the solvent to evaporate
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modified true and false if the statement is true, write true. if the st…
10. False, element 11. True 12. False, chemical 13. False, substance
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2 what is the effect of agitating a solution of protein powder and drin…
D. Stirring the solution helps increase the rate of dissolution.
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1 if a student wants to decrease the concentration of an aqueous soluti…
A. The student should add more solvent to the solution
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word bank: nucleus compound molecule electron 6. the _ is the positivel…
6. nucleus 7. electron 8. compound 9. molecule
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which of the following treatment procedures is not a surgical procedure…
D. chemical thyroidectomy
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word bank: proton electron cloud neutron atom elements 1. are represent…
1. Elements 2. atom 3. proton 4. electron cloud 5. neutron
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what does it mean for a mineral to be crystalline? the atoms are arrang…
The atoms are arranged in an orderly, repeating pattern.
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what are the properties/characteristics of all minerals? check all that…
Naturally occurring, Solid, Crystal structure, Made from inorganic processes, Definite chemical composition.
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2. the basic particle from which an element is made is called a(n) _. 3…
2. atom 3. proton
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density5. at room temperature, mercury has a density of 13.6 g/ml. what…
16.5 mL
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density3. a piece of platinum metal weighs 100. g and has a volume of 4…
21.4 \(g/cm^{3}\) (corresponds to the third option \(21.4\ g/cm^{3}\))
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2. the basic particle from which an element is made is called a(n) ____…
atom
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select the statement below that is not true about the mineral quartz. i…
It is a metallic mineral.
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please, turn off your cell phone and use only pencil. write your name o…
D. 19.6
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order the topics from broadest to narrowest. broader use of chemicals t…
1. chemical methods of ridding crops of pests 2. use of chemicals to kill pests on cotton crops 3. danger to humans of chemicals used on cotton 4. risk of cancer due to chemicals …
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7. chlorine is a poisonous gas. sodium reacts explosively with water. w…
D. Products of a chemical reaction have different properties than the reactants.
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below is a graph that illustrates the social costs of producing refrige…
A. \(\$650;45,000\)
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which of the following statements regarding endocrine glands is not tru…
C. Endocrine glands secrete hormones into ducts.
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5. with luck, its possible to find a gold nugget in nature, but no one …
C. reactivity
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what is the specific heat capacity of water? select one: 6.02×10²³ j/g·…
1.00 cal/g·°C
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e two substances in each sample can interconvert. that is, each kind of…
First: yes; Second: yes; Third: no; Fourth: no
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7 multiple choice 1 point which of the molecules has the highest boilin…
Liquid 4: \(CH_3CH_2CH_2CH_3\)
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3. sodium bicarbonate (nahco₃) is added to cake mixes before baking. as…
C. The carbon dioxide gas bubbles make the cake fluffy.
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4 multiple answer 3 points which of the following statements about cova…
- A. Covalent bonds hold the atoms together in discrete molecules. - C. Covalent bonds can be single, double, or triple bonds. - E. Covalent bonds form when atoms of nonmetals are…
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3 multiple answer 3 points which of the following statements about meta…
- Metals in solid form have specific crystal structures. - Metals can be hammered into different shapes. - Metals can be drawn into wires.
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the following figure shows the bond formation of sodium chloride which …
B. The electrostatic attraction between the positive ion and negative chlorine forms an ionic bond. C. The resulting chlorine anion has a stable octet in its valence shell. D. The…
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13 multiple choice 2 points a student claims that fluorine will form an…
A. Fluorine's electronegativity is the highest on the periodic table, so it tends to gain electrons.
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14 multiple choice 2 points a student writes the name nitrogen monoxide…
The correct name is nitrogen dioxide, because two oxygen atoms require the prefix di-.
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15 multiple choice 3 points which of the following correctly matches ea…
CO₂ - linear; BF₃ - trigonal planar; H₂O - bent
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i am new. history made me. my first language was spanglish. i was born …
free verse with short, definitive statements
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write p for physical change or c for chemical change. 20) ___ a paper g…
20. P 21. P 22. C 23. C 24. M 25. M
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a block of wood has a mass of 500 g and a volume of 100 cm³. a piece of…
1. B. the piece of metal 2. A. wood 3. C. magnets 4. C. The volume stays about the same. 5. C. Marie Curie
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write p for physical change or c for chemical change. 3.017)____a banan…
3.017) C 3.018) P 3.019) C 3.020) P
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choose the best answers. 3.011)____pink gold = yellow gold + a. iron b.…
3.011) B. copper 3.012) B. It looks the same as the water. 3.013) B. The volume stays about the same. 3.014) D. 10 g 3.015) A. Marie Curie 3.016) balance, microscope, spectrometer
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choose the correct answer. the terms \amplitude, displacement, resonanc…
Physics
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(each answer, 5 points) match the words with the descriptions. 3.01) __…
3.01) J. a mixture that includes different types of metals 3.02) D. a change that creates a different type of matter with new properties 3.03) H. the amount of solute dissolved in…
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a chemist measuring the viscosity of oils records the instruments and m…
C. replication.
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choose the correct answer. the key words “remainder, factor, integrate,…
math
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15. which is a homogeneous mixture? a jar of mixed nuts a bowl of fruit…
a slice of cheese
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14. which physical property is shown by scratching one material with an…
hardness
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13. which is a heterogeneous mixture? a mug of hot cocoa a gallon of mi…
a jar of mixed nuts
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12. which is an example of a chemical change? water boiling a cake baki…
a cake baking
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which of the following is not a condition required by the government to…
# Brief Explanations: To label food as "organic," the government[LLM SSE On Failure]
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10. which is a characteristic of a mixture? it is the result of a chemi…
Its components retain their properties.
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9. which is an example of a compound? water sand iodine gold
water
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which of the following is not a condition required by the government to…
# Brief Explanations: - For a food to be labeled "organic[LLM SSE On Failure]
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8. which mixture is homogeneous? granola cereal milk salad dressing soil
milk
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7. filtration is used to separate mixtures based on density boiling poi…
particle size
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6. which is an example of a reversible physical change? cutting hair pe…
melting ice
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5. what is the reason why bubbling occurs when vinegar is mixed with ba…
a gas is produced
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4. a precipitate is the name for the ____ that forms when liquids are m…
solid
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3. what is the term for the lumps that form when an acid is added to mi…
precipitate
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2. which is true about metals used for jewelry, such as platinum and go…
They have low reactivity.
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1. distillation is used to separate mixtures based on its boiling point…
boiling point
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19. the energy of moving objects is called ____ energy. chemical kineti…
kinetic
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7. identify what are three sources of energy that generators turn into …
Mechanical energy, chemical energy, kinetic energy.
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write the formulas: 31. calcium bromide 32. copper (i) phosphate 33. ba…
31. \(CaBr_2\) 32. \(Cu_3PO_4\) 33. \(BaSO_4\) 34. \(P_2S_3\) 35. \(Fr_3P\) 36. \(SbC_3\) 37. \(KHCO_3\) 38. \(Cs_2S\) 39. \(Hg(NO_3)_2\) 40. \(AlF_3\)
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part i - covalent only chemical nomenclature write the formulas: 1. dih…
1. $H_{2}O$ 2. $S_{4}Cl_{3}$ 3. $P_{3}O_{8}$ 4. $P_{5}O_{6}$ 5. $C_{7}Cl_{2}$ 6. $N_{10}O_{8}$ 7. $P_{2}N_{9}$ 8. $As_{2}O_{5}$ 9. $SO_{2}$ 10. $NO_{3}$
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arrange these ions according to ionic radius. largest radius rb+ sr²+ a…
Largest radius: \(As^{3 - }\), then \(Se^{2 - }\), then \(Br^{ - }\), then \(Rb^{ + }\), smallest radius: \(Sr^{2 + }\)
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air pressure is the pressure in a given area caused by the weight of th…
Cause: Altitude is lower, such as at sea level. Effect: Air pressure is higher. Cause: Altitude is higher, such as at the top of Mount Everest. Effect: Air pressure is lower.
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field work combined with laboratory analysis collaboration with many ot…
C. agricultural chemistry
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classify each statement about effective nuclear charge, ( z_{\text {eff…
- True: - Effective nuclear charge is dependent on the number of electrons present in an atom. - Across a period, as \(Z_{eff}\) increases, atomic size decreases. - In a N atom, a…
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what are geometric isomers? compounds that have the same atoms arranged…
compounds that have the same atoms arranged in the same order, but with different three - dimensional orientations
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what is a disadvantage of using a space - filling model to show a chemi…
Space - filling models do not identify the number and type of bonds.
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8.4) what is a spectrometer? a. a tool used by chemists to measure the …
- 8.4: C. a tool used by chemists to study the makeup of substance by looking at the way they take in or give off light - 8.5: B. microscope - 8.6: B. Rosalind Franklin - 8.7: Alc…
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choose the best answers. 8.1) what is chemistry? a. the study of life b…
8.1) B. the study of matter 8.2) A. environmental chemists, forensic chemists, and pharmaceutical chemists 8.3) work with dangerous materials, conduct experiments to test their id…
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fill in the chart with three examples of physical changes and three exa…
| Physical Change | Chemical Change | | --- | --- | | Melting of ice | Burning wood | | Tearing paper | Rusting of iron | | Boiling water | Digesting food |
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what are the roles of the fcc in the us? fcc- federal communications co…
- regulating the country's communications infrastructure - ensuring communication technology is compatible with existing technology - assigning frequencies to television, radio, c…
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write p for physical change or c for chemical change. 7.1) a change cau…
7.1 \(P\) 7.2 \(C\) 7.3 \(C\) 7.4 \(P\) 7.5 \(P\) 7.6 \(C\) 7.7 \(C\) 7.8 \(C\) 7.9 \(P\) 7.10 \(P\) 7.11 \(C\) 7.12 \(C\) 7.13 \(P\) 7.14 \(C\) 7.15 Sugar dissolves in water is a…
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which of the following may result in cancer? i. radiation exposure ii. …
I, II, III, & IV
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what is distillation? the combination of substances by cooling the sepa…
the separation of substances by boiling point
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what is unique about fractional distillation? it uses heat within the c…
It uses heat within the column to separate the different oil products.