Chemie
Chemische Reaktionen, Stöchiometrie, Molekülstrukturen und Elementeigenschaften.
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an isotope is a version of an element with the same number of protons b…
neutron
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bubbles / burbujas. * physical change chemical change
Chemical change
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what is the shorthand electron configuration for sulfur atom? ar 3p4 ne…
\([Ne]3s^{2}3p^{4}\)
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how many electrons can the d sublevel hold?
10
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precipitation reaction / reacción de precipitación. * physical change c…
Chemical change
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which is the electron configuration for an oxygen atom? 1s²2s²2p⁴ 1s²2s…
\(1s^{2}2s^{2}2p^{4}\)
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ice cream melting / helado derritiéndose. physical change chemical chan…
Physical change
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what is this element? 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶
Selenium
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bonus question draw or write one example of each: physical change: chem…
- Physical change: Water freezing into ice. - Chemical change: Burning wood.
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baking pizza / pizza para hornear.* physical change chemical change
Chemical change
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how many electrons can the s sublevel hold?
2
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part 3: choose the best answer circle the correct answer. (large check …
1. b) Physical change 2. b) Chemical change 3. b) Ability to burn
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1 from a chance in the world by steve pemberton the author justifies de…
③.
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part 2: true or false directions: circle t for true or f for false. (pi…
1. T 2. F 3. T 4. T 5. T
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chemistry test: physical and chemical properties name: date: part 1: ma…
1. Physical Property 2. Chemical Property 3. Physical Property 4. Chemical Property 5. Physical Property 6. Chemical Property
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making origami / hacer origamis. * physical change chemical change this…
Physical change
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what noble gas should be used to write the shorthand configuration for …
Kr
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making ice / haciendo hielo. physical change chemical change this is a …
Physical change
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cutting paper / cortar papel. * physical change chemical change
Physical change
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concept 2: isotopes 3. which numbers on the periodic table tell you the…
3a. Atomic number 3b. Mass number 3c. Atomic number (in a neutral atom) 3d. Atomic number 3e. Mass number 4a. Number of protons equals number of electrons 5a. Same number of proto…
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what atom matches this electron configuration? 1s² 2s² 2p⁶ 3s²
Magnesium
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cooked eggs / huevos cocidos. * 5 points physical change chemical change
Chemical change
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roasted marshmallows / malvaviscos asados. * 5 points physical change c…
B. Chemical change
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broken plates / platos rotos. * 5 points physical change chemical change
Physical change
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toasted bread / pan tostado. * physical change chemical change
Chemical change
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lighting a light bulb / encendiendo una bombilla. * physical change che…
Physical change
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which observation is the most objective? the crystals in this image are…
The crystals in this image are jagged and white and developed on the green string between the two solution - filled glass jars.
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b. describing where each of the three subatomic particles are located. …
- **b.i** : In the electron - cloud (or electron shells) around the nucleus. - **b.ii** : In the nucleus. - **b.iii** : In the nucleus. - **c.i** : Mass mainly exists in the nucle…
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5 multiple choice 3 points a sodium atom loses an electron. it now has …
+1
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determine what elements are denoted by the following electron configura…
11) \(Ar\) (Argon); 12) \(Sn\) (Tin); 13) \(As\) (Arsenic); 14) \(Os\) (Osmium); 15) \(Es\) (Einsteinium)
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explaining how a fluid cools the diagram shows molecules in a fluid. ex…
1. Molecules lose kinetic energy. 2. Molecular motion slows down. 3. Inter - molecular forces become more significant. 4. Molecules get closer together. 5. Fluid may change state …
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11. how much would a sample of 28.3 x 10^{24} atoms of carbon weigh in …
\(564.47\text{ g}\)
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to rent a certain meeting room, a college charges a reservation fee of …
$t < 22$
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10. you are given a pure sample of silver (ag) that weighs 127 grams. h…
\(7.09\times 10^{23}\space atoms\)
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this branch focuses on the processes inside living things such as how t…
Biochemistry
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im a crime scene investigator. i get to the scene of the crime first an…
Analytical Chemistry
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\i spend my day working with carbon to make safe and efficient fuels su…
Organic Chemistry
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\i spend my entire day studying the physical aspects of chemistry. whic…
Physical Chemistry
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this branch focuses on analysis, such as at a crime scene. choose analy…
Analytical Chemistry
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look at the equation below. how many hydrogen atoms are there in the re…
12; 12
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9. a fire in the lab is calculated to consume 17.9 moles of oxygen (o₂)…
\(572.8\space g\)
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6. \farmers rotate crops, conserve water, and avoid overusing chemicals…
A. Using/maintaining land and resources in a way that can continue for the long term
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this branch deals with materials that have not yet been discovered. * 1…
Theoretical Chemistry
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8. you are given 15.3 grams of so₂, how many moles is this?
\(0.239\ mol\)
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this branch focuses entirely on one single element (carbon). analytical…
Organic Chemistry
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\i spend my day studying the physics of batteries to make them last lon…
Physical Chemistry
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this branch deals with the processes that go on within living things. c…
Biochemistry
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7. how many molecules are in 7.24 moles of carbon monoxide (co)?
\(4.36\times 10^{24}\text{ molecules}\)
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molecular mass is defined to be the sum of the masses of the individual…
A. \(2x + 2y = 34.01468\), \(2x + y = 18.01528\)
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6. convert 6.74x10^{24} molecules of glucose (c_{6}h_{12}o_{6}) into mo…
\(11.2\text{ mol}\)
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question 5 read these passages from the article. which one is an opinio…
C. Who knew homework could be so much fun?
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covert 145 grams of platinum (pt) into atoms
\(4.47\times 10^{22}\space atoms\)
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what type of footwear protects you from chemicals and provides extra tr…
Rubber boots
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bellringer adimensional analysis to complete the following. round to 3 …
\(767\space g\)
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question 2 of 10 which of these is not a petroleum product? a. plastic …
D. Paper
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lo 6.4. what does the chemical examination of urine involve? testing fo…
Testing for the presence of certain substances, such as glucose, protein, and blood.
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lo 6.4. what can cloudy urine or strong odor indicate in a urinalysis? …
An infection or other health problems.
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lo 6.4. what are the components of a urinalysis? macrosopic, organic, a…
Physical, chemical, and microscopic examinations.
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clue #3 describe the end behavior for the graph of the function ( f(x)=…
As \( x ightarrow\infty\), \( f(x) ightarrow\infty\) and as \( x ightarrow-\infty\), \( f(x) ightarrow\infty\)
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nigel osei 157 (701169021) p. 7 | q01. ia | mdwhstry. iahs. q01. 25 - 2…
A. The steam engine # 13.
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base your answers to questions 12 - 14 on the image below and on your k…
12. A. The steam engine 13. A. A steady drop in life expectancy of the urban working class 14. B. It was often dangerous and required long hours.
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complete este cuestionario para finalizar la tarea de química moderna q…
Todos tienen la misma densidad.
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instrucciones: elige una respuesta y pulsa \siguiente\. recibirás tu pu…
Oxidación
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complete este cuestionario para finalizar la tarea de química moderna q…
la cantidad de materia
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complete este cuestionario para finalizar la tarea de química moderna q…
la cantidad de materia
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complete este cuestionario para finalizar la tarea de química mo ¿cuál …
Oxidación
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complete este cuestionario para finalizar la tarea de química moderna q…
¿Cuánto espacio ocupa la materia?
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complete este cuestionario para finalizar la tarea de química moderna q…
espacio
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what happens to the volume of a gas when its temperature increases (acc…
Volume increases
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problem 15. an unknown element x has three naturally occurring isotopes…
a. The average atomic mass of \(X\) is approximately \(35.56\) amu. b. The element is Chlorine (\(Cl\)) with atomic number \(17\).
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7. what does the 101 in represent? a. the mass number c. the nuclide nu…
7. a. the mass number 8. c. electron cloud 9. b. mass number 10. e. isotope 11. a. mass number 12. c. atomic number 13. d. atomic mass 14. b. atomic mass unit
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practice it how does charles law affect the efficiency of gas exchange …
Temperature affects the volume of gases within the lungs which can impact gas exchange efficiency.
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identify the choice that best completes the statement or answers the qu…
1. d. mass numbers. 2. c. the numbers of protons and electrons are equal. 3. b. the mass number. 4. a. atom. 5. a. 50 protons, 50 electrons, 75 neutrons. 6. b. 8 neutrons.
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1. isotopes of the same element have different a. positions on the peri…
# Brief Explanations: 1. Isotopes of an element have the same atomic number (so same position on periodic table and same chemical[SSE Completed, Client Connection Error][SSE Compl…
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8. most of the volume of an atom is occupied by the 9. atoms of the sam…
The average atomic mass of \(X\) is \(35.56\) amu.
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11. how much would a sample of 28.3 x 10²⁴ atoms of carbon weigh in gra…
$564.35\ g$
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10. you are given a pure sample of silver (ag) that weighs 127 grams. h…
\(7.09\times 10^{23}\space atoms\)
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9. a fire in the lab is calculated to consume 17.9 moles of oxygen (o₂)…
\(572.8\space g\)
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you are given 15.3 grams of so₂, how many moles is this?
\(0.24\space mol\)
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how did the new weapons introduced in world war i contribute to a war o…
Machine guns and powerful, long - range guns led to armies attempting to wear down an enemy to the point of collapse. The sinking of merchant vessels by U - boats contributed to t…
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6. convert 6.74x10²⁴ molecules of glucose (c₆h₁₂o₆) into moles: 7. how …
6. Approximately \( 11.2\) mol 7. Approximately \( 4.36\times 10^{24}\) molecules
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having read about the different kinds of chemical equations, jameel dec…
- Decomposition: “compounds break down into simpler products”, \(2H_2O_2 ightarrow 2H_2O + O_2\) - Replacement: \(2KI + Pb(NO_3)_2 ightarrow PbI_2 + 2KNO_3\), “two elements in dif…
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keesha performed a chemical reaction and the products looked quite diff…
A. Matter is not created or destroyed and the same amount of mass remains.
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one day on her walk home from school, leann noticed some rust on an old…
B. reactants
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leandra is learning about chemical reactions and she wants to examine t…
A. the kinds of atoms that form during a reaction, B. the kinds of molecules involved in the reaction, D. whether the molecules are products or reactants
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1. what is the longest stage of alzheimers disease? early stage middle …
1. Middle stage 2. Vitamin B 3. Delirium 4. (None of the options are correct for typical behavior - treating medications. But if forced to choose based on the given options and a …
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in the balanced equation ( 2h_2 + o_2 ightarrow 2h_2o ), what is the ra…
a. \(1:2\)
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if 2 moles of h₂ react with 1 mole of o₂, how many grams of h₂o are for…
C. 36 grams
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in the reaction 2h₂ + o₂ → 2h₂o, what is the mole ratio of h₂ to h₂o? a…
A. \(2:1\) (This is incorrect as per the above calculation). B. \(1:2\) (This is incorrect as per the above calculation). C. \(2:2\) (Simplifies to \(1:1\), but the question asks …
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if 5.0 moles of h₂ are reacted, how many grams of h₂o are produced? a. …
a. 90 grams
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12. in the given example, what is the empirical formula for a compound …
d. $CH_{2}O$
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question 1 what is one specific question about space that could be best…
- Robotic mission question: “What is the detailed chemical composition of Venus's atmosphere?” Use: Exploring Venus. Advantage: Can operate in Venus's extreme temperature (e.g., 4…
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finding moles from atoms: how many moles are in 1.5x10²⁴ atoms of neon …
\( 2.5\) moles
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hormones are chemicals secreted and regulated by the endocrine system. …
T.
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exam: shaving facial hair 1. what type of razor is used for a person wi…
1. Electric razor 2. TRUE 3. Taut
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this quiz does not affect your grade. its just a bit of extra practice …
oxidation
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1. what is the best way to decrease the potential for accidents in orga…
1. Create a culture of safety 2. Chemicals in locked room 3. Make sure the wheelchair is in good working condition 4. Identify 5. The individual's care plan
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example half-life problems: if you have 10. grams of c - 14 (half - lif…
After 5700 years: 5 grams. After 11400 years: 2.5 grams. After 17100 years: 1.25 grams.
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scientists can use the percentage of carbon - 14 in a fossils remains (…
The Niaux cave paintings currently contain less than \(1/8\)th of the carbon - 14 they contained when originally painted: False; In another \(5700\) years, the Niaux cave painting…
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according to the us food and drug administration (fda) what must any pr…
at least 95% organically produced ingredients