Chimie
Réactions chimiques, stœchiométrie, structures moléculaires et propriétés.
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drag the missing word into place as the heat rose, the water began to i…
evaporate
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4. when you select an atom, it will be sitting on the balance which sho…
The mass number increases as you go from left to right in period 2.
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directions: use a periodic table to draw a bohr model of the following …
| Atom | Atomic Number | Atomic Mass | Number of Protons | Number of Electrons | Number of Neutrons | |---|---|---|---|---|---| | Hydrogen | \(1\) | \(1\) | \(1\) | \(1\) | \(0\) …
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drag the missing word into place have a set size or amount but not a se…
Liquids
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austin calculated that he should be able to make 6.7064 g of alum based…
$79.53\%$
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drag the right word to its definition the smallest particle of a substa…
molecule
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3. when you select an atom, it will be sitting on the balance which sho…
The mass number increases as you go from left to right in period 1.
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drag the missing word into place ok, matter exists in three main : soli…
states
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drag the missing word into place ok, matter exists in three main : soli…
states
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drag the missing word into place she needs a lot of water. to move thos…
energy
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drag the missing word into place a(n) of carbon dioxide contains one ca…
molecule
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drag the missing word into place when you take away heat, you take away…
energy
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3) write the electron configuration for the following elements. a) s b)…
3) a) \(1s^{2}2s^{2}2p^{6}3s^{2}3p^{4}\) b) \(1s^{2}2s^{1}\) c) \(1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}\) d) \(1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}\) 4) a) \([Ar]4s^{2}3d^{1…
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chapter 15: staff food safety training 12. how can training needs be id…
12. C. Observe the employee’s performance on the job. 13. A. A health inspector might ask for it. 14. C. When to conduct a self - inspection. 15. B. How to hold and store TCS food…
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4: electrons in atoms test - 11/14/2025 24 of 24 which of the following…
- "Four of the d orbitals have a cloverleaf shape. A d orbital can hold a maximum of 10 electrons." - "An s orbital has a spherical shape and can hold a maximum of 2 electrons." -…
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module 4: electrons in atoms test - 11/14/2025 the element sodium is on…
$1s^{2}2s^{2}2p^{6}3s^{1}$ (the first option)
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module 4: electrons in atoms test - 11/14/2025 how many orbitals are in…
7 (corresponding to the option "O 7")
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module - electrons in atoms test - 11/14/2025 diagram 1 represents an a…
an atom of hydrogen in an excited state
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4: electrons in atoms test - 11/14/2025 what is the maximum number of e…
2
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module 4: electrons in atoms test - 11/14/2025 1. the maximum number of…
18.
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module 4: electrons in atoms test - 11/14/2025 the diagram represents t…
opposite spin states.
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module electrons in atoms test - 11/14/2025 the process of an atom rele…
emission.
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module 4: electrons in atoms test - 11/14/2025 in the wave - mechanical…
a region of the most probable electron location.
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el cuarto nivel principal de energía tiene________. ○ 9 orbitales ○ 16 …
16 orbitales.
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which will increase the rate of a chemical reaction? adding a catalyst …
adding a catalyst
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a scientist is conducting an investigation that involves water, silver,…
They are each made of matter. Some are compounds and some are elements. They all contain atoms.
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what is a happy atom? what element is the strongest at taking electrons…
- Happy Atom: An atom with a full valence shell (stable). - Strongest at taking electrons: Fluorine. - Weakest at taking electrons: Francium. - What elements/atoms fight over: Ele…
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module 4: electrons in atoms test - 11/14/2025 strontium and barium hav…
valence electrons.
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module 4: electrons in atoms test - 11/14/2025 according to the wave - …
in orbitals.
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module 4: electrons in atoms test - 11/14/2025 the fourth principal ene…
16 orbitals.
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module 4: electrons in atoms test - 11/14/2025 which of the following i…
Rubidium (Rb), 37.
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module 4: electrons in atoms test - 11/14/2025 as an atom in the ground…
absorbs energy.
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which statement best describes the relationship between activation ener…
Reducing the activation energy can increase the rate of a reaction.
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module 4: electrons in atoms test - 11/14/2025 the electron configurati…
Bismuth
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el elemento sodio es uno de los elementos que componen la corteza terre…
\(1s^{2}2s^{2}2p^{6}3s^{1}\)
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¿cuál es el número máximo de electrones que puede contener un solo orbi…
2
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el número máximo de electrones que puede ocupar el tercer nivel princip…
18
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what can you conclude from the graph? the reaction that causes a firewo…
The reaction that causes a candle to burn requires less energy to start, and occurs more rapidly than the reaction that causes a firework to explode.
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element number of valence electrons electron - dot structure arsenic ca…
| Element | Number of Valence Electrons | Electron - Dot Structure | |---|---|---| | Arsenic | \(5\) | \(\cdot\!\!\!:\!As\!\!\!\cdot\) (or other valid 5 - dot arrangements) | | Ca…
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¿cuántos orbitales hay en el subnivel 4f? 5 3 7 1
7
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howard is working with a cleaning solution that contains sodium hydroxi…
None of the options (Inhalation, Ingestion, Injection) are correct. The correct chemical route of entry is dermal (skin contact) which is not listed among the provided options.
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you have just started a new job and your boss gives you a list of chemi…
Training
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howard has a chemical burn from accidentally spilling a strong basic cl…
A. Acute
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your employer gives you a list of all the chemicals in the entire build…
No
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is a hazard pictogram one of the required pieces of information to be i…
Yes
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as an employee, who is supposed to provide training on the chemicals yo…
Employer
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are hazard and precautionary statements required pieces of information …
Yes
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chemical labels must include information on identifying the chemical, b…
Warnings about the chemical
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complete the text with the better adverbial conjunction. one effect of …
Accordingly
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questions 1. which of the following lists include three man - made poly…
1. c. Plastic, nylon, man - made rubber 2. b. Petroleum 3. a. They are often used in automobile parts. 4. d. They can leach toxic chemicals. 5. b. Links to cancer and pollution.
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reconstructing a landscape which statements about this area are true ba…
- The area was once a forest. - The area was uplifted. - The area was probably covered by water.
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question 15 of 15 an atom containing an equal number of protons and ele…
C. neutral
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question 11 of 15 protons are the smallest particle of an element that …
B. False
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drag and drop the type of change and a description to the correct image…
- Baking a cake: Change - chemical, Description - change in chemical properties - Chopping carrots: Change - physical, Description - change in physical properties
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drag and drop the words or phrases that accurately complete the summary…
- Primera línea: *temperature* (temperatura), *increases* (aumenta), *energy* (energía), *faster* (más rápido) - Segunda línea: *decreases* (disminuye), *slower* (más lento)
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select the statement(s) that describe the best way to speed up a chemic…
Increase the temperature
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question 7 of 10 what did émile durkheim mean when he wrote about organ…
B. People are dependent on one another.
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drag and drop the change to label each picture as a chemical or physica…
1. Physical 2. Chemical
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summarize it! drag and drop the words or phrases to complete the summar…
- Primer espacio: lower - Segundo espacio: higher - Tercer espacio: salt - Cuarto espacio: neutralization
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bases taste bitter, can be slippery, are often odorless, create many of…
bleach, antacids, dish detergent
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read the excerpt from \the author to her book\. \thou ill - formd offsp…
A, A, C, C
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which statement best describes the rhyme schemes of \the author to her …
Both poets primarily use couplets to link ideas; Bradstreet uses inversion to complete rhymes.
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read the excerpt from \the author to her book\. \thou ill - form’d offs…
C. A, A, B, B
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the health risks of alcohol use directions: use the following outline t…
1. Depressant 2. Binge drinking 3. Alcohol poisoning 4. Ethanol 5. Intoxication 6. Fermentation
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ray believes that a stimulating first date, such as attending a sportin…
the spillover effect.
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section 3.2 how atoms combine in your textbook, read about different ty…
1. i 2. f 3. e 4. a 5. g 6. j 7. l 8. h 9. c 10. k 11. b 12. d
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marcus is taking advanced placement chemistry in high school because he…
D. intrinsic motivation; extrinsic motivation
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what is an ion? a polar atom or molecule (with a charge) a non - polar …
a polar atom or molecule (with a charge)
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which type of energy do moving objects have? electrical kinetic potenti…
kinetic
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there are many reasons why a country might adopt protectionist measures…
- Supports the Berry Amendment: - "Since goods come from U.S. suppliers, foreign enemies can’t cut off access to key supplies during a conflict." - "Purchasing from domestic suppl…
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question 10 1 pts pyrogen molecules trigger the fever response by promo…
- **Question 10**: prostaglandins. - **Question 11**: A. B, C, & D.
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which statements describe iambic pentameter as it is used in shakespear…
Each line contains five metrical feet, In a group of two syllables, the second is stressed.
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what do these two changes have in common? melting wax mixing chocolate …
C. Both conserve mass, D. Both are only physical changes.
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what do these two changes have in common? your breath becoming visible …
Both conserve mass.
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check out the model below!* polymer monomer each individual circle repr…
Each individual circle represents a monomer. The entire model shows a polymer.
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some chemical compounds are listed in the first column of the table bel…
- \(CH_3NH_2\): molecular, weak base - \(HC_2H_3O_2\): molecular, weak acid - \(HBrO_3\): molecular, strong acid - \(NaBrO_3\): ionic
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chewing gum can improve our alertness and lower our stress level. which…
B. Evidence B
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the reactants in this reaction are... ch4 + 2o2 → co2 + 2h2o products c…
Reactants: \(CH_{4}\), \(O_{2}\)
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select the true statements. sodium and chlorine are both solids at room…
- C. When atoms of two different elements bond, they form a new compound with unique properties. - D. In table salt, sodium and chlorine are held together by chemical bonds.
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how many of each? number of molecules total number of atoms types of at…
Number of Molecules: 1, TOTAL number of Atoms: 3, TYPES of Atoms: 2
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select all the true statements. when electrons are transferred from one…
In a metal, valence electrons are shared among all of the atoms in the material. In a metal, valence electrons move freely throughout the entire lattice.
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consider the lewis dot structures of potassium and bromine atoms. k ·br…
The second option \([K]^{+}[\cdot\ddot{Br}\cdot]^{-}\) (assuming the second structure in the given set of options has \(K^{+}\) and \(Br^{-}\) correctly represented as per the ion…
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determine whether each statement is true or false. a sodium cation has …
1. True 2. False 3. False 4. True
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compare the sodium atom and chlorine atom to the ions they form in the …
A sodium atom has 1 valence electron, and a chlorine atom has 7 valence electrons. When sodium transfers a valence electron to chlorine, the sodium cation and chloride anion each …
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phosphorus trifluoride (pf₃) is a covalent compound. the phosphorus ato…
The third Lewis dot structure ( \(:\ddot{F}- \dot{P}-:\ddot{F}:\) with a \(F\) below and lone pairs on \(F\) and a lone pair on \(P\)) correctly represents a molecule of \(PF_3\).
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in a lewis dot structure, bonding electrons are represented by a pair o…
B. There are six lone pairs in a chlorine molecule. C. A chlorine molecule has 34 total electrons, 14 of which are valence electrons.
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there are three types of chemical bonds: covalent, ionic, and metallic.…
A covalent bond forms between two non - metal (chlorine is a non - metal) chlorine atoms. Two chlorine atoms, each with 7 valence electrons, combine by sharing 2 electrons. Each a…
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consider the lewis dot structures of lithium and fluorine atoms. li ·f:…
The second option \([Li]^{+}[:\ddot{F}:]^{-}\)
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chlorine dioxide (clo₂) is used in paper manufacturing to bleach wood p…
The second model (the one with two \(ClO_2\) molecules decomposing into one \(Cl_2\) molecule and two \(O_2\) molecules) accurately represents the reaction.
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apply read the poem. then answer the question. a strong wind clamors ag…
written in free verse, has a recognizable rhyme scheme, includes 2 stanzas
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phosphoryl chloride (pocl₃) is used to manufacture flame - retardant ch…
The second model.
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apply read each excerpt from a drama. then answer the question. chef he…
Compare: stage directions; Contrast: a rhyme scheme
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nitrous oxide (n₂o), also known as laughing gas, is used as an anesthet…
The first model (the top - most one among the given options) accurately represents the reaction as it has the correct number of \(N\) and \(O\) atoms on both sides of the reaction…
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formic acid (hcooh) is found in the venom of some ants and bees. it dec…
The first model.
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in the atmosphere, nitric oxide (no) forms when a lightning strike caus…
The fourth model accurately represents the reaction.
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researchers are considering using dimethyl ether (ch₃och₃) as an altern…
| |Number of atoms in reactants|Number of atoms in products| |---|---|---| |H|8|8| |C|2|2| |O|2|2|
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manuel wants to know the boiling point of milk. one cookbook tells him …
123 °F
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a student dissolved a small amount of blue powder in alcohol in a glass…
the blue powder
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summarize it! drag and drop the words or phrases that best complete the…
Matter, Physical, Density, Solubility, Conductivity, Magnetism, Boiling and melting, same, will not
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practice it! select which statements correctly compare melting and boil…
Both solubility and melting/boiling points are seen in nature, Both solubility and melting/boiling points are affected by temperature, Both solubility and melting/boiling points a…