Chemie
Chemische Reaktionen, Stöchiometrie, Molekülstrukturen und Elementeigenschaften.
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5. 4mg(oh)₂ mg= o= h=
Mg = 4, O = 8, H = 8
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4. 3cu(no)₂ cu= n= o=
$Cu = 3$, $N = 6$, $O = 6$
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3. 5c₃h₅(oh)₃ c= h= o=
$C = 15$, $H = 40$, $O = 15$
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genius tip! to remember chemical formulas of nitrites, nitrates, and am…
vowels
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10. what is the isotope notation for a nucleus with 1 proton and 2 neut…
$_{1}^{3}H$
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2. what is the isotope name for a nucleus with 10 protons and 27 nucleo…
2. neon - 27 3. $^{171}_{76}Os$
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challenge question a square of aluminum foil has a mass of 1.85 grams. …
$24.4\ m/s$ ### 4)
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simone created a chart to summarize the energy transformations that tak…
kinetic energy transformed to mechanical energy
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6. make a rule: if you knew the number of valence electrons in a nonmet…
6. The valence of a non - metal (excluding hydrogen) is either the number of valence electrons or 8 minus the number of valence electrons. 7. Hydrogen has 1 valence electron and t…
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when javier touches a hot mug of tea, energy is transferred from the su…
C. thermal
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when a spring is compressed, the energy changes from kinetic to potenti…
work
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which structure is a lipid?
F
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that the oil floated to the top of the container after it had sat untou…
Control group: Cups with no oil. Experimental groups: Cups with thin oil layer, Cups with thick oil layer. Independent variable: Thickness of oil layer. Dependent variable: Water …
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the passage below describes a process of scientific inquiry. select the…
He wondered, "Could a thick enough oil layer prevent the water from evaporating?"
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which two types of potential energies would be types of mechanical ener…
D. elastic and gravitational
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how do the atomic mass and atomic number compare for helium? helium doe…
The atomic mass is greater.
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what differs between a radioactive isotope and a stable isotope of the …
Radioactive isotopes last for less time.
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how are the number of protons represented in the periodic table? atomic…
B. atomic number
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a neutral atom possesses an atomic number of 13 and an atomic mass of 2…
A. outside the nucleus
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after walking by some rusted cars parked in the street, lena wondered w…
Lena determined that iron is highly susceptible to corrosion in saline conditions while aluminum is much more resistant.
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the isotope of an atom containing 40 protons and 51 neutrons suddenly h…
Zirconium-93
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after walking by some rusted cars parked in the street, lena wondered w…
Lena's experiment supports her conclusion that iron is highly susceptible to corrosion in saline conditions while aluminum is more resistant.
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while washing his hands at his aunts house, malik noticed that the soap…
Soap lathers less in hard water than in soft water.
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erica loves making lemonade with fresh - squeezed lemon juice and water…
Citric acid is more effective than sugar at preserving lemonade's color and freshness.
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use prior knowledge look for clues double check your work to ensure acc…
Similarity: Both have a central - atom bonded to other atoms. Difference: The atoms in the two models have different colors (possibly representing different elements).
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question 5 what stretching frequencies (in cm⁻¹) are present in the str…
3300
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5 what does the subscript in the following notation represent? * (0.5 p…
The number of protons
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which of the following is correct about an atoms atomic number? * (0.5 …
The atomic number is equal to the number of protons in an atom The mass number is the number of protons plus the number of neutrons
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how do isotopes of a given element differ? * (0.5 points) they have dif…
1. They have different numbers of neutrons 2. They always have the same number of protons
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what is the stretching frequency (in cm⁻¹) of the following carbonyl? o…
1685
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structured input: what i did versus what i do nombre jayden olivares yo…
| Last year | This year | Statement | True for you | | ---- | ---- | ---- | ---- | | X | | Organicé mi mochila cada mañana. | | | | X | Hago metas y un plan para lograrlas. | √ | …
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oil is a fossil fuel used to run cars, heat up homes, and produce elect…
air, water, organisms in water
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evaluate: answer the question below. identify one process in the diagra…
One process that happens quickly: Burning of forests and organic debris. One process that happens slowly: Formation of coal.
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calculate the percent composition by mass of each element in al(oh)₃. u…
% Al = 34.6% % O = 61.5% % H = 3.88%
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question 1 0.25 / 0.5 pts which of the following carbonyls have a stret…
All of the given carbonyl structures (the three structures shown, not "none of these")
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the indicator thymol blue has two color transitions as indicated in the…
pH 1: A. red pH 2: A. yellow pH 6: C. yellow pH 10: B. blue
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question 20 what stretching frequencies (in cm⁻¹) are present in the st…
2250
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question 19 0.5 pts which of the following carbonyls have a stretching …
The fourth structure (ketone)
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what stretching frequencies (in cm⁻¹) are present in the structure belo…
C. 1715
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question 17 what is the stretching frequency (in cm^-1) of the followin…
1745
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what stretching frequencies (in cm⁻¹) are present in the structure belo…
1800
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which of the structures have a major peak above 3000 cm⁻¹? (select all …
The second structure (the benzoyl - benzene)
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which refers to the amount of heat required to change the temperature o…
Specific heat
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which of the following carbonyls have a stretching frequency around 171…
none of these
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the passage below describes an experiment. jackson put a two - inch ste…
Do steel nails take fewer days to rust in water than in vinegar?
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question 13 what is the stretching frequency (in cm⁻¹) of the following…
1685
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question 12 0.5 pts what is the stretching frequency (in cm⁻¹) of the f…
1775
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which of the following carbonyls have a stretching frequency around 171…
All of the above (the three carbonyl - containing compounds shown)
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the passage below describes an experiment. when baking soda and vinegar…
Does the type of vinegar added to baking soda affect how long the mixture bubbles?
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which of the following carbonyls have a stretching frequency around 171…
All of the above (assuming the three structures shown are cyclohexanone, cyclopentanone, and benzoic acid)
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question 10 what stretching frequencies (in cm⁻¹) are present in the st…
B. all of these
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which of the following carbonyls have a stretching frequency around 174…
Fourth structure (carbonyl with - Cl group)
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question 8 what is the stretching frequency (in cm⁻¹) of the following …
1800
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which of the following carbonyls have a stretching frequency around 174…
none of these
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express each number in decimal notation. 1. $2.3\times10^{5}$ 2. $6.5\t…
1. $230000$ 2. $65000$ 3. $3000$ 4. $400000$ 5. $0.605$ 6. $0.00415$ 7. $0.003$ 8. $0.00004$ 9. $7.5$ 10. $8.2$ 11. $6.5\times10^{2}$ 12. $7.24\times10^{2}$ 13. $3.2\times10^{9}$ …
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question 5 what is the stretching frequency (in cm⁻¹) of the following …
1685
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clare was using steel to make rusted sculptures. after building each sc…
Independent variable: the type of liquid used Dependent variable: the number of rusted steel squares
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question 3 what is the stretching frequency (in cm⁻¹) of the following …
1715
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11. the ______ of the hair refers to the amount of movement or shape of…
11. B. wave pattern 12. A. Hair texture 13. C. Fine hair has the smallest diameter, whereas coarse hair has the largest diameter. 14. C. black 15. D. It refers to the hair's abili…
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after completing a lab activity, all chemical wastes should be a. left …
B. Disposed of according to teacher directions
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i celebrate myself, and sing myself, and what i assume you shall assume…
a self - confident voice that believes in connectedness to others
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prepwork part i: atomic mass practice 1. examine the data for all natur…
a. A prediction could be that the average atomic mass is closer to 62.93 amu since the first isotope has a higher natural abundance. b. Copper (Cu) has an average atomic mass of a…
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13. why does substance use increase the risk for suicide? answer: copyr…
Substance use can increase the risk for suicide through multiple mechanisms such as altering brain chemistry (e.g., disrupting neurotransmitter systems like serotonin which is inv…
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it is around 10.5. that is more basic than baking soda and almost as al…
transition between descriptions of Lake Natron and the species that live there
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prepwork part 1: avg. atomic mass calculations examine the mass spectru…
1. 2 2. Peak A 3. Peak B 4. 35.5; calculated using the formula for average atomic mass with given relative abundances and masses of isotopes. 5. Chlorine 6. 17
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7. who developed the periodic table? (look it up!) 8. each box on the p…
7. Dmitri Mendeleev 8. Element 9. Atom
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6. how many neutrons do the following elements have? atomic mass (botto…
Tungsten: 110 Nickel: 31 Fluorine: 10 Iron: 30 Sodium: 12 Hydrogen: 0 Nitrogen: 7 Silver: 61 Gallium: 39 Bismuth: 126 Rubidium: 48 Molybdenum: 54 Argon: 22 Cesium: 78 Silicon: 14 …
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5. how many protons do the following elements have? magnesium____ zinc_…
magnesium: 12 zinc: 30 sodium: 11 barium: 56 carbon: 6 calcium: 20 chromium: 24 mercury: 80 iron: 26 copper: 29 francium: 87 phosphorous: 15 aluminum: 13 potassium: 19 hydrogen: 1…
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4. find the following elements symbols: oxygen_ iron_ potassium_ nitrog…
oxygen: O iron: Fe potassium: K nitrogen: N carbon: C tin: Sn hydrogen: H calcium: Ca chlorine: Cl gold: Au silver: Ag neon: Ne sodium: Na copper: Cu arsenic: As krypton: Kr niobi…
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instructions: silently and independently, answer the following equation…
1. #of sig figs: 2, Final answer: $5.9\ g$ 2. #of sig figs: 3, Final answer: $107\ g$ 3. #of sig figs: 6, Final answer: $2300.12\ g$ 4. #of sig figs: 2, Final answer: $9.3\ mL^{3}…
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question 10 americium has protons neutrons electrons
Protons: 95 Neutrons: 148 Electrons: 95
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question 9 radon 86 rn 222 radon has protons neutrons electrons
Protons: 86 Neutrons: 136 Electrons: 86
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question 8 gold has protons neutrons electrons
Protons: 79 Neutrons: 118 Electrons: 79
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question 7 54 xe xenón 131.29 xenon has protons neutrons electrons
Protons: 54 Neutrons: 77 Electrons: 54
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36 kr krypton 83.80 krypton has protons neutrons electrons (unlike prev…
Protons: 36 Neutrons: 48 Electrons: 36
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question 5 ar ar argon 39.9 argon has protons neutrons electrons
Protons: 18 Neutrons: 22 Electrons: 18
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question 4 neon has protons neutrons electrons
Protons: 10 Neutrons: 10 Electrons: 10
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question 3 oxygen has protons neutrons electrons
Protons: 8 Neutrons: 8 Electrons: 8
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carbon 6 c 12.011 carbon has protons neutrons electrons
Protons: 6 Neutrons: 6 Electrons: 6
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lets talk vocab...cosmetology: infection control for cos match the defi…
42. AIDS 43. Non - porous 44. Tinea barbae 45. CDC (Centers for Disease Control and Prevention) 46. Acquired immunity 47. Disinfection 48. Tinea capitis 49. Antiseptic 50. Parasit…
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what are two reasons scientists might use a model to study what happens…
A. The molecules in the reaction are too small to see. C. The process is very dangerous to study.
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markus is reading a sonnet by william shakespeare. which will best help…
finding a single concept that links the lines together
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ms. jameson is using sonnet 18 by william shakespeare to teach her stud…
D. aa
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rhyme scheme. so long as men can breathe or eyes can see, so long lives…
D. aa
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1. why do water molecules at the surface of a pond have elastic - like …
Water molecules are polar and hydrogen - bond. Surface molecules have a net inward pull due to fewer neighbors above, creating surface tension.
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at the beginning of a chemistry experiment, the volume of liquid in a c…
$15$
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when chemicals in the air impact the weathering of rocks the interactio…
D. atmosphere and geosphere
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which sequence of elements is arranged in order of decreasing atomic ra…
A. Al, Si, P
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6 multiple choice 3 points something that is only made of one kind of a…
C. Pure Substance
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5 multiple choice 3 points when you pour salt into water and mix it unt…
D. Solution
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4 multiple choice 3 points this is a type of mixture where everything i…
C. Homogeneous mixture
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2 multiple answer 3 points this question has multiple answers. which of…
A. Salt water C. Lemonade E. Kool - aid
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1 categorization 5 points put the correct mixture with the correct word…
Homogeneous Mixture: Ketchup, Coffee, Lemonade, Green jello, Vanilla ice cream Heterogeneous Mixture: Boba tea, Pepperoni pizza, Salad, Cookies and Cream ice cream, Chex Mix
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question 5 (2 points) which subatomic particle will you add or remove f…
B. protons and neutrons
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question 4 (2 points) which subatomic particle will you add or remove f…
A. protons, C. electrons
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question 3 (2 points) which subatomic particle will you add or remove f…
protons
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what is the charge of this atom?
0
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read the passage all that stirring of old instincts which at stated per…
Instinctual joy in chasing the rabbit and leading the pack
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what is the mass of this atom?
7 amu
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statement of stockholders equity financial information related to organ…
a. | Line Item Description | Amount | |--|--| | Common Stock | $230,000$ ($180,000 + 50,000$) | | Retained Earnings | $1,720,000$ | | Total | $1,950,000$ | b. The statement of sto…