Química
Reacciones químicas, estequiometría, estructuras moleculares y propiedades.
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2. observe: turn off show current formula/equation. drag a water molecu…
2. Without performing the action, it could be that the water molecule interacts with other substances in the building region, such as hydrating ions or participating in a chemical…
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modeling ionic and covalent bonds 1 in each box, enter the appropriate …
Electrons (N): 5 Electrons (O): 6
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modeling ionic and covalent bonds in each box, enter the appropriate nu…
Electrons (N): 5 Electrons (O): 5
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activity a: build a glucose molecule get the gizmo ready: be sure the c…
A. 2 B. 1
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gizmo warm - up what do rice, potatoes, and sugar have in common? they …
1. C: 6, H: 12, O: 6 2. A. 24 B. The number of black spheres is equal to the total number of carbon, hydrogen and oxygen atoms in the chemical formula of glucose.
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question 4 which functional groups are found in these molecules? 1 poin…
carboxyl and amino
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question 1 which functional groups are found in these molecules?
hydroxyl and keto
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if the element magnesium (mg) has 12 electrons it will also have: 12 pr…
12 protons
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question 7 which of the following does not appear in a rate law? rate c…
coefficients from the balanced equation
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a unimolecular chemical reaction where the reaction rate is directly pr…
First
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question 5 if a reaction has a constant rate that is independent of rea…
zero
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question 4 how are values in a rate law determined? statistically algor…
C. experimentally
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the exponent in a rate law is called the reaction ____. energy multipli…
order
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question 1 the mathematical expression of rate for a given reaction is …
rate law
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3 tries left marlisa is a researcher who is studying brain mris of pati…
C. neuropsychology
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determine the formal charge of each atom in this lewis structure. then,…
Left nitrogen: 0 Right nitrogen: 0 Overall charge: 0
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in an electrically neutral atom, the number of protons equals the numbe…
protons equals the number of electrons.
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use the drop - down menus to describe the charges of the subatomic part…
Protons have a positive charge. Neutrons have a 0 charge. Electrons have a negative charge.
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label each bond in the following compound as ionic or covalent. select …
Part 1 of 2: Covalent Part 2 of 2: Covalent
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question 34 the sense of smell is also known as _______. olfaction chem…
olfaction
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question 10 points 2 which of the following materials is used to make g…
Silica
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question 21 sound waves are simply ________. ○ a form of electronic rad…
the vibration of the molecules of the air surrounding us
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case of dr. jekyll and mr. hyde: summary and plot development disease, …
The powders look like they were made by a professional chemist.
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the case of dr. jekyll and mr. hyde: summary and plot development disea…
The powders look rare and appear to be of the highest quality.
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organic compounds are compounds that contain carbon atoms, with only a …
contain carbon atoms, with only a few exceptions.
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inorganic compounds are compounds that are highly reactive and explosiv…
do not contain carbon atoms, with a few exceptions.
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ph is a measure of ______ concentration of oxygen and nitrogen ions in …
concentration of hydrogen and hydroxyl ions in a solution.
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psychological science uses research to study the mind, brain, and behav…
Brain: neurochemical processes, hormonal activity Mind: thought, cooperation, memory Behavior: mating
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a student sets up the following equation to solve a problem in solution…
mL
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which piece of evidence best supports the claim that sushi has a long h…
Sushi came about almost a thousand years ago in Japan.
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14 multiple choice 1 point do chemical reactions still occur without en…
Yes, the reaction happens but the reaction is slower.
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the passage below describes a process of scientific inquiry. select the…
After walking by some rusted cars parked in the street, Tessa wondered whether all metals are equally susceptible to corrosion.
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multiple choice question which of the following is made by joining two …
Molecule
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which is the smallest particle with a unique chemical identity? o molec…
D. Atom
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6 multiple choice 0.8 points which of the following is a particle found…
E. neutron
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during early research in nuclear energy, why were scientists surprised …
They expected that the large release of energy would cause an increase in mass.
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fill in the blank question the energy required to initiate or begin a c…
activation
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organic old - fashioned oats 1/2 cup 150 27 3 5 0 1 banana 1 small, 100…
# Breve explicación: La tabla muestra la cantidad de calorías, carbohidratos, grasas, proteínas, azúcares y grasas saturadas en diferentes alimentos para el desayuno y el almuerzo…
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multiple choice question which is a 20 - carbon compound derived from a…
A. Eicosanoids
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read the passage from sugar changed the world. no one could have seen i…
Advances in the production of sweeteners hastened the end of involuntary servitude.
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read the passage from sugar changed the world. we all crave sweetness, …
Sugar cane is no longer the main source of sweetness for most people.
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fill in the blank question fatty acids with multiple c=c bonds are call…
poly - unsaturated
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true or false question unsaturated fatty acids do not have double bonds…
False
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multiple choice question a fatty acid contains the maximum number of hy…
B. saturated
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12 an is the smallest particle of elements that maintains the propertie…
atom
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which subatomic particles are found in the nucleus of an atom? i. proto…
B. I and III only
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7. whose work is credited with being the beginning of modern atomic the…
John Dalton
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who was the first person to propose the existence of atoms? he hypothes…
B. Democritus
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true or false 4 points the massachusetts bay colony had a conflict with…
7. True 8. Effigy 9. Edwin Chadwick 10. All of the answer choices
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multiple choice question palmitic acid is an example of a(n) ______ fat…
A. saturated
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multiple choice question which are classifications of fatty acids? o ba…
B. Saturated and unsaturated
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multiple choice question sucrose is an example of a ______. o monosacch…
disaccharide
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multiple choice question which best describes what occurs in a condensa…
A. A water molecule is removed from a molecule when it creates a covalent bond.
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multiple choice question name the chemical reaction that breaks a coval…
Hydrolysis
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multiple choice question which molecule is most likely to contain methy…
C. Fats
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multiple choice question which type of molecule is most likely to have …
B. Alcohols
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multiple choice question starch is a ______ of glucose. o monomer o red…
C. polymer
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multiple choice question name the functional group with the symbol -nh₂…
B. Amino
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multiple choice question carboxyl and phosphate groups are examples of …
D. functional groups
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multiple choice question fats, steroids, and amino acids are molecules …
Methyl
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multiple choice question when a molecule accepts electrons, it is said …
reduced
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fill in the blank question the functional group commonly found in alcoh…
hydroxyl
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fill in the blank question an oxidation - reduction reaction is defined…
electrons
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multiple choice question which functional group is abbreviated -oh? o a…
B. Hydroxyl
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multiple choice question which molecule is reduced in an oxidation - re…
Oxidizing agent
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fill in the blank question groups of atoms that are added to carbon bac…
functional
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multiple choice question which term refers specifically to a type of re…
Reduction
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a chemical reaction in which a molecule gives up electrons is ________.…
B. oxidation
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multiple choice question an oxidizing agent is a(n) ________. o free ra…
B. electron acceptor
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when two substances were combined, bubbles were produced and the temper…
1. A chemical reaction took place (assuming the temperature drop is due to an endothermic chemical reaction). 2. B. \(2H_2 + O_2 ightarrow2H_2O\)
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what happens to atoms in a chemical reaction? they turn into energy. th…
For the first question: They are rearranged. For the second question: $3CuCl_2+2Al ightarrow 2AlCl_3 + 3Cu$
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a potassium atom is converted to a potassium ion when the atom ○ gains …
C. loses one electron.
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question 8 6 pts what is the formula of magnesium sulfate? mgs mgso3 mg…
Question 8: C. $MgSO_{4}$ Question 9: C. $Ca(NO_{3})_{2}$
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question 6 6 pts a lewis electron dot symbol shows all the electrons in…
Question 6: all the valence electrons in the ground - state of an atom. Question 7: loses two electrons.
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question 4 6 pts which type of chemical bond involves the transfer of e…
Question 4: ionic Question 5: potassium and fluorine
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question 2 6 pts elements of group va generally form ions with a charge…
Question 2: D. -3 Question 3: D. -2
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question 1 halogens generally form ions with a charge of +1. +2. -1. -2.
C. -1
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true or false question as a catalyst speeds up reaction rate, it is con…
False
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select all that apply which of the following is most likely to decrease…
Decrease temperature, Decrease concentration of reactants
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multiple choice question which type of reaction occurs when two molecul…
C. Exchange
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multiple choice question in general, reaction rate _______ when reactan…
B. increases
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fill in the blank question reversible reactions exist in a state of che…
equilibrium
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multiple choice question catalysts ______ reaction rates. increase do n…
A. increase
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multiple choice question up to a point, increasing the temperature of a…
B. increase
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multiple choice question what term is used to describe reactions that c…
D. Reversible
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fill in the blank question two molecules swap atoms or groups of atoms …
double - displacement
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select all that apply. which of the following will, in general, increas…
Increasing concentration of reactants, Increasing temperature
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multiple choice question a chemical reaction in which two or more small…
A. Synthesis
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multiple choice question reversible reactions usually exist in a state …
the ratio of products to reactants is stable
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multiple choice question a chemical reaction in which a larger molecule…
D. Decomposition
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multiple choice question the law of mass action says that reactants pro…
A. greater; lesser
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select all that apply in chemical reactions, chemical bonds are _. □ br…
broken, formed
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which of the following describes a reversible reaction? a combines with…
A. A combines with B and becomes AB, but when AB is heated, it becomes A and B again.
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multiple choice question which type of reaction occurs when two molecul…
B. Exchange
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multiple choice question how is chemical energy defined? potential ener…
Potential energy stored in the bonds of molecules
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multiple choice question. the energy of motion is what type of energy? …
D. Kinetic
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fill in the blank question a large molecule breaks down into two or mor…
decomposition
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true or false question a chemical reaction is a process in which a cova…
True
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select all that apply which of the following are used to express concen…
A. Percentages C. Weight per volume D. Molarity
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multiple choice question chemical energy is stored in _. o electrolyte …
bonds of molecules