Chemie
Chemische Reaktionen, Stöchiometrie, Molekülstrukturen und Elementeigenschaften.
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multiple choice question which of the following is a definition of ener…
The capacity to do work
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multiple choice question milliequivalents per liter is used to express …
C. electrolyte
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multiple choice question name the measure of concentration that takes i…
Molarity
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multiple choice question which of the following would give you the mola…
O Moles/liter
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fill in the blank question weight per volume, percentages, and molarity…
concentration
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multiple choice question solution a prevents solution c from changing i…
A. Buffer
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multiple choice question one millimole of nacl is dissolved in a liter …
1 mEq/L (corresponding to the option "1 mEq/L")
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which term applies to a solution with a ph of 7.0? o basic o acidic o n…
C. Neutral
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molarity is a measure of the number of moles of solution per ________. …
A. liter of solution
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multiple choice question solution a has a ph of 2. it is basic acidic n…
B. acidic
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one mole of a chemical is the number of grams equal to its ______. perc…
O molecular weight
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multiple choice question which reflects the weight of a solute in a sol…
Weight per volume
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fill in the blank question a solution with a ph above 7 is
basic (or alkaline)
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fill in the blank question substances that resist changes in ph are kno…
buffers
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multiple choice question a base is a compound that acts as a proton acc…
A. acceptor
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fill in the blank question a neutral solution has a ph of. need help? r…
7
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fill in the blank question a proton (h⁺) donor, or a chemical that rele…
acid
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fill in the blank question solutions with a ph below 7 are
acidic
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multiple choice question which is an example of an emulsion? o sand in …
Fat in breast milk
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a ph of 7.5 is considered to be which of the following? neutral basic a…
Basic
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multiple choice question which is an example of a colloid? salt water s…
Gelatin desserts
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multiple choice question naoh is a compound that releases hydroxide ion…
base
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multiple choice question albumin in blood plasma is an example of a col…
colloid
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multiple choice question hcl is a compound that releases hydrogen ions …
B. acid
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multiple choice question in a solution, the solute _______, when the so…
will not separate from the solvent
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multiple choice question what term is used to describe a suspension of …
D. Emulsion
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please read the below paragraph carefully, then answer the questions. j…
1. He forgot the baking soda needed for his experiment 2. Resourceful
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multiple choice question in a solution, the solute can be a _. o liquid…
gas, solid, or liquid
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which of the following is an example of a suspension? o blood cells in …
Blood cells in blood plasma
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fill in the blank question saltwater is a solution of nacl dissolved in…
solvent
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fill in the blank question a chemical mixture containing particles that…
colloid
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reading comprehension section please read the below paragraph carefully…
He forgot the baking soda needed for his experiment
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fill in the blank question the amount of energy required to raise 1 g o…
calorie
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multiple choice question which term refers to molecules that dissolve i…
C. Hydrophilic
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multiple choice question which term defines a substance that consists o…
A. Solution
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multiple choice question what term can be used to describe any molecule…
B. Hydrophobic
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fill in the blank question saltwater is a solution made out of nacl (sa…
solute
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multiple choice question in a solution, the solvent is _______ the solu…
more abundant than
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multiple choice question substances in a mixture are ________. o chemic…
B. physically blended together
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multiple choice question which type of bond listed below is the weakest…
C. Van der Waals forces
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multiple choice question sugar is an example of a ______ substance. hyd…
hydrophilic
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multiple choice question which type of bond can be described as a weak …
B. Hydrogen
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fill in the blank question hydrophobic means that a substance is insolu…
water
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multiple choice question in a carbon dioxide molecule, electrons are sh…
Nonpolar covalent
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the most common problem with plumbing fixtures is poor pressure poor fl…
1. E. leaks 2. B. failure at welded overflow connections
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multiple choice question the ability of water to dissolve other chemica…
A. solvency
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multiple choice question which of the following best describes a covale…
Sharing of electrons between two atoms
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multiple choice question salt on a watermelon is an example of a ○ elem…
C. mixture
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fill in the blank question a chemical bond that involves the attraction…
ionic
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multiple choice question which term refers to an attractive force cause…
D. Chemical bond
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multiple choice question water molecules are weakly attracted to each o…
A. hydrogen
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good plumbing fixtures have all of the following features except smooth…
1. B. porous 2. B. they have a dedicated hot water heating system
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multiple choice question hydrogen has an atomic weight of 1amu and oxyg…
18amu (corresponding to the last option in the multiple - choice list)
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multiple choice question what term refers to a covalent bond in which t…
B. Polar
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multiple choice question glucose and fructose both have the chemical fo…
Isomers
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if each whole number on the ph scale indicates a tenfold change in acid…
Water with a pH of 2 is 1000 times more acidic than water with a pH of 5.
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multiple choice question which type of bond is formed by the sharing of…
B. Covalent
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select all that apply which of the terms below can be applied to glucos…
C. Compound D. Molecule
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multiple choice question which type of chemical bond involves the excha…
B. Ionic
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true or false question a molecule may be composed of one element or mor…
True
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fill in the blank question covalent, ionic, and hydrogen are examples o…
chemical
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fill in the blank question adding together the atomic weights of all at…
molecular
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fill in the blank question molecules with the same molecular formula bu…
isomers
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which are examples of electrolytes? salts glucose bases acids need help…
A. Salts C. Bases D. Acids
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multiple choice question which term can apply to a molecule composed of…
B. Compound
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what is the term for an ion with a net negative charge (more electrons …
A. Anion
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multiple choice question atoms that make up molecules ______. o must be…
O may be identical or different
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multiple choice question unstable isotopes are called _. isomers neutro…
C. radioisotopes
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multiple choice question in nature, sodium atoms lose electrons; theref…
D. cations
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fill in the blank question unstable and highly reactive chemical partic…
free radicals
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multiple choice question when a sodium atom loses an electron, it becom…
B. ion
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fill in the blank question a compound that dissociates in water, produc…
electrolyte
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multiple choice question which term refers to a negatively charged ion?…
A. Anion
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fill in the blank question high - energy radiation that can cause damag…
ionizing
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multiple choice question what does the breakdown of unstable atomic iso…
C. Ionizing radiation
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35 multiple choice 2 points in an area away from forests and cities, ge…
35. A. carbon dioxide 36. A. GIS
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what type of ion has lost an electron and, consequently, has a net posi…
C. Cation
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29 multiple choice 2 points the purpose of the kyoto protocol is to pre…
29. C. reduce greenhouse gas emissions 30. B. aquifers
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deuterium and tritium are isotopes of hydrogen. what is different about…
They have different numbers of neutrons.
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multiple choice question what is an ion? an atom with an unstable nucle…
An atom that has gained or lost electrons
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multiple choice question if an atom has 2 electrons in its innermost sh…
A. 3
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19 multiple choice 2 points oil and natural gas result from the burning…
19. the decay of tiny marine organisms that accumulated on the ocean floor millions of years ago. 20. industrial purposes.
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multiple choice question which term refers to the positively charged pa…
Proton
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multiple choice question unstable isotopes are called _______. ions rad…
B. radioisotopes
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11 multiple choice 2 points land where it is possible to grow crops is …
11. C. agricultural land 12. A. seeds are planted among the roots of the previous crop
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fill in the blank question atoms of the same element that differ only i…
isotopes
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multiple choice question if an atom has 2 protons and 2 neutrons, its a…
C. 4 amu
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fill in the blank question the electrons found in the outermost shell o…
Valence
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multiple choice question where is a neutron located? o surrounding the …
In the nucleus of an atom
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multiple choice question which term defines the simplest form of matter…
A. Element
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multiple choice question which subatomic particle does not contribute s…
B. Electron
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which of the following is an element? o protons o carbon dioxide o hydr…
Hydrogen
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1) a 110 ml solution of 0.340 m hcl(aq) is mixed with a solution of 330…
$0.0869\ mol$ ### 2.
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homework set #10 please print and show all work and answers on a separa…
1. De Broglie's hypothesis links electron's wave - like nature to quantized orbits and energies in hydrogen atom. 2. s - spherical, p - dumb - bell; $n$ for energy/size, $l$ for s…
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demonstrating understanding of the lab procedure the calorimeter is mad…
better insulators
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demonstrating understanding of the lab procedure. a coffee cup calorime…
the coffee cups could melt
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which fat is most likely a solid at room temperature? one that is satur…
one that is saturated
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in an oil spill, why does the oil not mix with the seawater? lipids are…
Lipids are hydrophobic.
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which fat has only single bonds between the carbon atoms in the fatty a…
saturated
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the combustion of magnesium creates so much energy so quickly that it i…
What is the enthalpy of the combustion of magnesium?