Química
Reacciones químicas, estequiometría, estructuras moleculares y propiedades.
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build vocabulary mixture material composed of two or more elements or c…
Polar or ionic molecules
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which term describes this reaction? addition condensation elimination s…
A. addition
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which functional group is found in an amine?
The second option with the $\text{R}-\text{N}-\text{H}$ structure.
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assignments > sci_phys_cfa1_periodictableatomicstructure_sy26 sci_phys_…
Elements in Group 18 of the periodic table (noble - gases like He, Ne, Kr, Xe, Rn) have chemical properties most like argon.
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which functional group is found in an ester?
The second option $\ce{R - C(O)-OR'}$ (where the carbon is double - bonded to oxygen and single - bonded to an oxygen which is further bonded to an R' group) represents the functi…
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which title is most appropriate for this table? r - oh r - o - r r - c …
Uses of Functional Groups Involving Oxygen
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which class of organic compound is commonly used in fuels? o alcohol o …
alcohol
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what is the name of the functional group that is attached to this hydro…
C. alkyl halide
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which class of organic compound is most likely to be used in anesthetic…
ether
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which compound is responsible for the smell that is associated with the…
C. cadaverine
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organic compounds. the size and arrangement of the rings, along with ot…
ring structures
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the melting point of a substance was determined to be 35.7 °c in the la…
C. 2.59%
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examine the general structure of a molecule. r - c - h with cooh on top…
B. a carboxylic acid and an amine
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chemists refer to positively charged ions as cations. chemists refer to…
| Symbol | $\ce{^{88}_{38}Sr^{2+}}$ | $\ce{^{32}_{16}S^{2-}}$ | $\ce{^{70}_{31}Ga^{3+}}$ | $\ce{^{80}_{35}Br^{-}}$ | |--|--|--|--|--| | Atomic Number | 38 | 16 | 31 | 35 | | Mass …
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which general formula represents the functional group in a carboxylic a…
C. RCOOH
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which is a property of both alkenes and alkynes? both are highly water …
Their boiling points tend to increase with chain length.
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rubber is manufactured from latex that is produced from rubber trees. w…
It is made from the polymerization of a long chain of alkene molecules.
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movement of water molecules across a semi - permeable membrane. when so…
A. water
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the energy required to remove a valence electron from a neutral gaseous…
Halogens have high ionization energies because they are one electron short of a stable noble - gas configuration. It is energetically unfavorable for them to lose an electron to f…
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chemistry: chemical reactions - testing for ions experiment station #1.…
Sample #1 was distilled water, I know because it had no electrical conductivity and no calcium ions. Sample #2 was Arizona river water. Sample #3 was Kitchener tap water, I know b…
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which step in naming unsaturated hydrocarbons is used for alkenes but n…
Examine the multiple bond for cis - and trans - isomers.
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plant oils are made up of small organic molecules that are called terpe…
D. a naturally occurring, branched - chain alkene
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what is the name for this molecule? nonene nonane 1 - octyne 1 - octene
C. 1 - octyne
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the electron configuration of an element is: 1s² 2s² 2p⁶ 3s² 3p⁵. the e…
D. chlorine
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consider the hydrocarbon below. what is the name of this hydrocarbon? p…
D. ethene
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if 4f¹², the 12 stands for the ____. 12 electrons in the f sublevel; th…
12 electrons in the f sublevel
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which is a property of alkynes? o alkynes have a neutral ph. o alkynes …
Alkynes tend to be acidic.
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q4 16 the 3p atomic sublevel has the shape of a clover daisy sphere dum…
D. Dumbbell
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what is the name of a hydrocarbon that has the formula ch3(ch2)4cch? 6 …
C. 1 - heptyne
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what is the name for this molecule? ch₃ h₂c — c≡c — ch₂ h₃c 3 - heptyne…
A. 3 - heptyne
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question 7 of 12 an atom is too small to be seen with the naked eye. ba…
An atom is too small to be seen with the naked eye.
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how many valence electrons should magnesium have in its lewis dot model…
A. 2
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how many electrons should boron have around its lewis dot model? 4 3 2 1
3
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if a fluorine atom gains 1 electron, it would become f⁻ f⁺ o ne
$F^-$
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7 of 11 this could be the dot diagram of cl c o mg
Cl
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8. the pauli exclusion principle states that in order to occupy the sam…
Spin in opposite directions
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the d sublevel contains ______ atomic orbitals and holds a maximum of _…
5; 10
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which of the following cannot exist? 2d 3d 4f 4p
A. \(2d\)
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you have learned that not all atoms of an element are the same. variati…
1. | | Metal or Nonmetal | Is the number of protons the same in the atom and the ion? | Is the number of neutrons the same in the atom and the ion? | Is the number of electrons th…
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hot air balloons carry passengers high above the ground. density is def…
1. related to the study of weather
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balloons powered by science up, up, and away! hot - air balloons fascin…
4. "For passengers, a hot - air - balloon ride offers an amazing view of the world and a memorable lesson in science." (Paragraph 7)
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up, up, and away! hot - air balloons fascinate, amaze, and delight peop…
1. "Hot - air balloons are based on a single concept: warm air rises and cool air falls." (Paragraph 2)
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in the configuration 3p^5, the \3\ represents... the number of orbitals…
The energy level
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up, up, and away! hot - air balloons fascinate, amaze, and delight peop…
1. find
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1. the maximum numbers of electrons in each of the sublevels are ______…
s-2, p-6, d-10, f-14
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15 the major difference between a 1s and a 2s orbital is that the _____…
2s orbital is at a higher energy level
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the table shows some characteristics of a few atoms. element carbon (c)…
neutrons
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you add a few drops of a strong acid to a beaker of liquid with a ph of…
Buffer
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what is the charge of an ion with 26 protons, 28 neutrons, and 27 elect…
-1
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select the word(s) to complete the word equation that matches the descr…
1. hydrogen + oxygen 2. magnesium oxide 3. water + carbon dioxide
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1. how does the addition of an enzyme affect a chemical reaction? 2. ho…
1. An enzyme lowers the activation energy of a chemical reaction, increasing the reaction rate. 2. Initially, adding more substrate increases the enzyme - reaction rate until enzy…
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an atom has 22 neutrons and a mass number of 48. how many protons would…
26 protons
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which compounds would you expect to form a covalent bond? select all th…
B. $CBr_4$, C. $H_2O$
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the closest energy level in a bohr model can hold no more than ____ ele…
2
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who discovered that the nucleus exists in the center of the atom? chadw…
D. Rutherford
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17 multiple choice 1 point an atom has an atomic number of 11. how many…
B. 11
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a neutral atom of carbon (c) has an atomic number of 6. how many electr…
B. 6
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this is a correct dot diagram for carbon (c) true false
True
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14 multiple choice 1 point a neutral atom of fluorine (f) has an atomic…
D. 9
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what type of chemical reaction occurs when two compounds exchange parts…
Double displacement
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2. dado que el cloruro de sodio se clasifica como un compuesto, una mue…
más de un tipo de átomo.
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which form of energy do plants give out to consumers? mechanical kineti…
chemical
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14 multiple choice 1 point a neutral atom of fluorine (f) has an atomic…
D. 9
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2. ¿cuál es el mejor ejemplo de una reacción química? un prisma refract…
El oxígeno absorbe la luz solar formando moléculas de ozono.
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an atom of sulfur (s) has a mass number of 34 and an atomic number of 1…
18
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8 multiple choice 1 point what subatomic particle determines the identi…
B. Proton
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what is the atomic number of an atom with 29 protons? 30 29 27 28
B. 29
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which scientist is responsible for portraying the atom as seen below? s…
B. Bohr
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place the correct term in the sentence below. through polymerization √,…
Label A: monomer Label B: monomer Label C: polymer
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1. ¿qué afirmación describe una acción que probablemente resultó en una…
Un niño sopló a través de una varita llena de jabón y se produjeron burbujas.
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place the correct term in the sentence below. through, larger molecules…
polymerization
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3 multiple choice 1 point an atom of lithium (li) has a mass number of …
B. 4
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2. ¿qué acción haría que el azúcar forme una nueva sustancia? borrar to…
cocinar azúcar en una estufa
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multiple choice 1 point the image below can best be associated with whi…
D. Rutherford
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q4 2. ¿cuál es un ejemplo de sustancias que reaccionan químicamente? bo…
El hierro y el oxígeno forman óxido.
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what do we call an element that has the same number of protons but a di…
Isotope
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¿qué es un cambio químico? borrar todo ○ papel rasgado ○ el agua se con…
C. Quema de papel
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2 un científico colocó una muestra de litio en un recipiente con agua. …
Se produjo un cambio químico.
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single double triple quadruple
single
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the relative amount of free hydrogen and hydroxyl ions in the water is …
1. B. the ph scale 2. B. suspension
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rubber is manufactured from latex that is produced from rubber trees. w…
It is made from the polymerization of a long chain of alkene molecules.
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which is a property of alkynes? alkynes have a neutral ph. alkynes tend…
Alkynes are not soluble in water.
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plant oils are made up of small organic molecules that are called terpe…
D. a naturally occurring, branched - chain alkene
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which is composed of aromatic hydrocarbons? clothing barbeque fuel pain…
B. barbeque fuel
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single molecules made of two or more elements are called: * mixtures so…
1. C. compounds 2. B. mixture
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what is the name for this molecule? a. nonene b. nonane c. 1 - octene d…
D. 1 - hexene
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which is composed of alkynes? acetylene margarine rubber tires polystyr…
A. acetylene
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how are the vapor pressure and boiling point of alkynes affected as the…
D. Vapor pressure decreases, and boiling point increases
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what is the name of a hydrocarbon that has the formula ch₃(ch₂)₄cch? 6 …
C. 1 - heptyne
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which step in naming unsaturated hydrocarbons is used for alkenes but n…
Examine the multiple bond for cis - and trans - isomers
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how does a straight - chain alkane that has five carbon atoms differ fr…
The straight - chain alkane has two more hydrogen atoms than the cycloalkane.
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which prefix is used to indicate that the main chain of a hydrocarbon c…
C. but-
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what is the name of this hydrocarbon? o 3 - isopentane o 2 - methylbuta…
B. 2 - methylbutane
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which of these compounds would most likely be found in a deposit of nat…
A. $CH_4$
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what is the name of this alkane? 1 - methylbutane 2 - methylbutane 1,2 …
2 - methylbutane
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which lists straight - chain alkanes from lowest to highest boiling poi…
ethane, pentane, heptane, octane
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when is di- used in the name of a hydrocarbon? when the main chain cont…
when there are two identical substituents
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consider the alkane below. which property differentiates this alkane fr…
the shape
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saturated hydrocarbons with what length of carbon chain are the best lu…
C. 17 - 35
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part b read each scenario. decide whether a physical or chemical change…
| Scenario | Physical or Chemical Change? | Evidence | |---|---|---| | 2 | Chemical | New substances (charcoal) formed, smoke evolved | | 3 | Chemical | New substance (rust) forme…