Química
Reacciones químicas, estequiometría, estructuras moleculares y propiedades.
-
question 41 (1 point) what is the charge of the only monoatomic ions th…
M. -2
-
question 40 (1 point) how many valence electrons does oxygen have? __1_…
G. 6
-
question 39 (1 point) how many core electrons does oxygen have ? __1__ …
C. 2
-
question 38 (1 point) draw the lewis dot formula for the oxygen atom. s…
G. 6
-
question 37 (4 points) give the electron configuration for hafnium, hf,…
E. Xe, J. \(6s^{2}\), GG. \(4f^{14}\), T. \(5d^{2}\)
-
give the noble gas electron configuration of ti, element 22 using the b…
[Ar] 4 s 3 d
-
question 34 (2 points) give the complete electron configuration of the …
J. $3p^{6}$, K. $3d^{0}$, V. $4s^{0}$
-
question 33 (2 points) give the complete electron configuration of tita…
1. J. 3p⁶ 2. X. 4s² 3. M. 3d²
-
question 29 (1 point) the 3d subshell has a lower energy than the 4s su…
Question 29: False Question 30: True Question 31: False
-
question 26 (1 point) the energy of light increases with increasing fre…
Question 26: True Question 27: False Question 28: True
-
question 16 (4 points) a sample from an archeological artifact containe…
1. F. 5 2. M. 28,650 y
-
question 14 (2 points) the half - life of polonium - 218 is 3.00 minute…
G. 15.6 g
-
question 13 (1 point) the half - life of polonium - 218 is 3.00 minutes…
E. 6
-
question 11 (3 points) fill in all of the missing information; 1 symbol…
1. E. 3 2. Q. H 3. C. 1 4. E. 3
-
question 9 (3 points) fill in all of the missing information; 1 symbol …
A. -1 B. -1 C. 0 D. G. e
-
which statement best explains why a metal atom and a nonmetal atom are …
Metal atoms have low ionization energy, and nonmetal atoms have high electronegativity, so electrons transfer easily from the metal atom to the nonmetal atom.
-
to answer this question, first click here to view the associated video.…
1. Kinetic, Gravitational potential 2. 30.2 m/s
-
how is electronegativity related to covalent bonding? atoms must have s…
Atoms must have similar electronegativities in order to share electrons in a covalent bond.
-
question 5 (3 points) fill in all of the missing information; 2 symbols…
1. Q. 84 2. S. 206 3. I. alpha 4. H. gamma
-
question 4 (1 point) uranium, element 92, is an inner transition elemen…
True
-
consider the positions of carbon, nitrogen, potassium, and calcium on t…
C. nitrogen (N)
-
which interaction is responsible for the force of attraction between th…
proton - electron
-
which type of atom has the strongest attraction for electrons in bond f…
chlorine (Cl)
-
what will most likely happen when two bromine atoms bond together? the …
C. A covalent bond will hold them together.
-
which statement explains why the bonds between nonmetals tend to be cov…
They have small differences in electronegativity.
-
question 1 (1 point) nonmetals have low ionization energy compared to m…
- Question 1: False - Question 2: True - Question 3: False
-
sugar is made up of clear, colorless crystals that dissolve easily in w…
It is made up of atoms that are held together by covalent bonds.
-
which of these is a typical property of a substance that is composed of…
It does not conduct electricity in any form.
-
which statement is generally true about cacl2? it has only metallic bon…
Its bonds are formed by large differences in electronegativity.
-
in a mass spectrometer, germanium atoms have radii of curvature equal t…
64, 68, 70, 72
-
15 - 26 physical science 1 the history and arrangement of the periodic …
# Breve explicación: Los halógenos son elementos del grupo 17 de la tabla periódica. Bromo es un halógeno. Argón es un gas noble, litio es un metal alcalino y calcio es un metal a…
-
ic 25 - 26 physical science 1 the history and arrangement of the period…
# Breve explicación: En la tabla periódica, los grupos de elementos también se conocen como familias. Las familias comparten características químicas similares debido a la misma c…
-
use the periodic table to select which type of bond is present and whic…
$Cu_3Zn_2$: A. metallic bond, B. conducts electricity as a solid $O_2$: C. covalent bond, D. low melting point
-
what is the chemical symbol for magnesium? mo mn md mg
# Breve explicación: En la tabla periódica, el símbolo químico para el magnesio es Mg. Mo es el símbolo para molibdeno, Mn es el símbolo para manganeso y Md no es un símbolo quími…
-
who is credited with creating the first periodic table? dmitri mendelee…
# Breve explicación: Dmitri Mendeleev es ampliamente reconocido por crear la primera tabla periódica de los elementos químicos en 1869, organizándolos en función de sus pesos atóm…
-
how was the work of newlands similar to that of mendeleev on the period…
They both arranged the elements in order of increasing atomic mass.
-
ic 25 - 26 physical science 1 the history and arrangement of the period…
D. Antoine Lavoisier
-
which element is placed in the same period as ruthenium but has a highe…
# Explicación breve: Rutenio (Ru) está en el período 5. Zirconio (Zr) también está en el período 5 pero tiene un número atómico menor que rutenio. Bismuto (Bi) está en el período …
-
ic 25 - 26 physical science 1 the history and arrangement of the period…
# Breve explicación: El científico John Newlands estableció la ley de los octavos en la clasificación de los elementos químicos. Notó que, al ordenarlos por masa atómica creciente…
-
moseley made revisions to the periodic table that resolved some of the …
# Breve explicación: Moseley clasificó los elementos según el número atómico en lugar de la masa atómica. Esto permitió explicar las variaciones debidas a los isótopos. Los isótop…
-
how did moseley establish a more accurate periodic table? by arranging …
A. by arranging the elements according to atomic number instead of atomic mass
-
the history and arrangement of the periodic table use the periodic tabl…
# Explanation: ## Paso 1: Conducción de electricidad Los metales son buenos conductores de electricidad. Osmio, calcio y cromo son metales. ## Paso 2: Reactividad Los gases nobles…
-
use the periodic table to select the element that best fits each of the…
# Explicación detallada: ## Paso 1: Identificar el elemento con propiedades de metales y no - metales Los metaleoides son elementos que tienen propiedades de ambos metales y no - …
-
use the periodic table to select the element that best fits each of the…
# Explicación: ## Paso1: Identificar metáloides Los metáloides se encuentran en la diagonal que separa metales y no - metales en la tabla periódica. El cloro es un no - metal, el …
-
use the periodic table to select the element that best fits each of the…
# Explicación: ## Paso1: Identificar gases nobles Los gases nobles se encuentran en el grupo 18 de la tabla periódica. El kriptón es un gas noble, mientras que el cloro y el oxíge…
-
use the periodic table to select the element that best fits each of the…
# Explicación breve: Los metales alcalinos se encuentran en el primer grupo de la tabla periódica. El litio es un metal alcalino. Los halógenos se encuentran en el grupo 17 de la …
-
2.03 quiz: carbon and life due: fri oct 10, 2025 11:59pm attempt 1 in p…
Carbon can easily form 4 covalent bonds with other atoms.
-
one of these properties was originally used to arrange elements on the …
# Breve explicación: Originalmente, los elementos en la tabla periódica se organizaban según su masa atómica. Sin embargo, con el tiempo, se descubrió que organizarlos según el nú…
-
2.03 quiz: carbon and life due: fri oct 10, 2025 11:59pm attempt 1 in p…
those containing carbon
-
what is the correct chronological order of scientists contributing to t…
Lavoisier, Döbereiner, Newlands, Mendeléyev, y Moseley (segunda opción)
-
2.03 quiz: carbon and life due: fri oct 10, 2025 11:59pm attempt 1 in p…
It can form four covalent bonds.
-
use the text to compare and contrast bases and acids. an acid is define…
| | Bases | Acids | |--|--|--| | Have a pH less than 7.0 | | $\square$ | | Taste sour | | $\square$ | | Are usually solids | $\square$ | | | Change litmus paper to red | | $\squar…
-
(1) at some point, humans made the discovery that seemingly unlimited s…
For sentence 2: D. No change needs to be made. For sentence 6: D. No change needs to be made. For sentence 9: D. No change needs to be made.
-
c. write the full electron configuration, noble gas notation, and fill …
Nitrogen: 1s (↑↓), 2s (↑↓), 2p (↑ ↑ ↑) Chlorine: 1s (↑↓), 2s (↑↓), 2p (↑↓ ↑↓ ↑↓), 3s (↑↓), 3p (↑↓ ↑↓ ↑) Sodium: 1s (↑↓), 2s (↑↓), 2p (↑↓ ↑↓ ↑↓), 3s (↑) Neon: 1s (↑↓), 2s (↑↓), 2p …
-
24 multiple choice 1 point which chemical is contained within a class a…
24. Dry Chemical 25. Class C
-
1. determine the number of significant digits in the following measurem…
a. 4 b. 2 c. 3 d. 2 e. 4
-
question 45 1 pts in the reaction c₆h₁₂o₆ + 6 o₂ → 6 co₂ + 6 h₂o, the 6…
A. products
-
question 44 1 pts an atom is in its most stable state when all its elec…
True
-
question 43 1 pts in a covalent bond, atoms share electrons. lose elect…
share electrons.
-
question 42 1 pts the central element found in organic molecules is cal…
C. carbon
-
question 41 1 pts which of the following best describes why ionic molec…
Water is a polar, covalently bonded substance.
-
question 39 a solution with ph = 5 is _______ than a solution with ph =…
B. 100 times more acidic
-
question 38 hydrogen bonds and hydrophilic interactions are 1 pts weak …
weak chemical bonds that hold separate molecules together.
-
1. what is a polymer?
Un polímero es una molécula formada por la unión repetida de monómeros.
-
what determines a minerals unique characteristics? o age and location w…
B. Chemical composition and crystal structure
-
which would least strongly attract electrons from other atoms in a comp…
elements of group 1
-
which is the noble gas notation for chlorine? ne 4s²4p⁵ ne 3s²3p⁵ ne 3s…
[Ne] \(3s^{2}3p^{5}\) (the second option)
-
which characteristic is given by the angular momentum quantum number? o…
orbital shape
-
which is a correct set of values of m for one of the subshells of n = 2…
\(-1,0,1\)
-
hydrogen has three isotopes ^1h, ^2h, and ^3h. what is the difference b…
The number of neutrons ranges from 0 to 2.
-
when electrons are removed from the outermost shell of a calcium atom, …
D. a cation that has a smaller radius than the atom.
-
how many valence electrons does aluminum (al) have available for bondin…
C. 3
-
in which orbitals would the valence electrons for selenium (se) be plac…
C. s orbital and p orbital
-
which element is classified as an alkali metal? rb sr zr cl
Rb
-
which element has 32 protons in its nucleus? phosphorus cobalt germaniu…
germanium
-
among the elements of the main group, the general trend in the first io…
The ionization energy decreases because the full s orbital shields the electron entering the p orbital.
-
what is the atomic number of zirconium? 39 40 41 42
B. 40
-
which element is the most reactive? - sodium - nickel - carbon - oxygen
sodium
-
to show the electron configuration for an atom, when would it be better…
when the aim is to show electron spins
-
iron, an element with the chemical symbol fe, is an important element. …
The electrons of iron have probable locations in a region of space around the nucleus.
-
the elements of which group are nonreactive? ○ halogens ○ alkaline eart…
noble gases
-
which of the following symbols would be included in the noble gas notat…
B. Kr
-
which element has the largest atomic radius? o as o n o p o sb
Sb
-
which best explains why ionization energy tends to decrease from the to…
Electrons get farther from the nucleus.
-
a single atom of an element has 11 protons, 11 electrons, and 12 neutro…
Na
-
which statement best describes how electrons fill orbitals in the perio…
Electrons fill orbitals in order of their increasing energy from left to right.
-
chemistry homework assignment: matter, atoms, molecules, elements, and …
Atom - a) The smallest unit of an element that maintains the properties of that element Molecule - e) Two or more atoms joined together by chemical bonds Element - d) A pure subst…
-
when electrons are added to the outermost shell of a carbon atom, it fo…
an anion that has a larger radius.
-
electronegativities of the elements be, mg, ca, and sr follow a specifi…
Sr
-
the most negative electron affinity is most likely associated with whic…
small nonmetal atoms
-
which best describes ionization energy? energy needed to add an electro…
energy needed to remove an electron from an atom or ion in the gas phase
-
which element has a larger atomic radius than sulfur? chlorine cadmium …
B. cadmium
-
which ion was formed by providing the second ionization energy to remov…
Ca²⁺
-
electronegativities of the elements na, al, p, and cl follow a specific…
Cl.
-
which correctly summarizes the trend in electron affinity? it tends to …
It tends to be more negative across a period.
-
selected properties of antimony (sb) and iodine (i) are listed in the t…
Sb has a lower ionization energy and a lower electronegativity than I.
-
which of the following is a method used by archaeologists to understand…
B. Excavation
-
apply dimensional analysis and convert temperature. 5) 541 k to celsius…
5) $267.85^{\circ}C$ 6) $76.85^{\circ}C$ 7) $398.15$ K 8) $494.15$ K 9) $155.63$ mL 10) $2.86$ g/$cm^{3}$ 11) $101.89$ g 12) $5186.5$ g
-
15. which of the following elements would be the most reactive? a. brom…
15. A. Bromine 16. D. Krypton 17. B. greater than 18. C. the same as 19. D. numbers of protons and electrons are equal 20. B. attractive; repulsive 21. D. The smallest unit of an …
-
column a 1. norovirus 2. salmonella typhi 3. escherichia coli (o157:h7)…
1. b 2. i 3. a 4. g 5. d 6. j 7. h 8. f 9. e 10. c