CHEM-112 WEEK 1-10
Basic component that makes up any kind of material.
A: atom
This basically makes up any kind of material
A: atom
Anything that occupies space and has mass
A: matter
What is the general term for any body that has mass and occupies space?
A: matter
General term referring to anything that occupies space and has mass
A: matter
Study of materials and its components
A: Chemistry
General term for anything with mass and has volume
A: matter
Quantities standardized for scientific use
A: SI
Smallest building block of any material
A: atom
Branch of chemistry that deals with compounds containing carbon
A: organic
Path of electron around the nucleus of an atom
A: orbit
Most basic building block of any substance
A: atom
Quantity with square unit
A: SI
What kind of base forms hydroxide ions when mixed with water?
A: weak
Path followed by an electron around the nucleus of an atom
A: orbit
What do you call the path of an electron around the nucleus of an atom?
A: orbit
Science that deals with the chemical composition of chemical processes associated with the Earth and other planets.
A: geochemistry
Reaction involved when a complex reactant is broken down into a simpler product.
A: decomposition
What kind of reaction is involved when a complex reactant is simplified?
A: decomposition
Science dealing with the composition of processes involving the Earth and other planets
A: geochemistry
Quantity that refers to the space occupied by a body
A: volume
Quantity referring to the space occupied by a body
A: volume
Gas law involving constant pressure.
A: charle’s law
Product of the combination of atoms during chemical reactions
A: molecule
Results from the combination of atoms during chemical reactions
A: molecule
What substance results from the combination of atoms during chemical reactions?
A: molecule
Term used to refer to a charged atom
A: ion
In one molecule of water, how many percent is hydrogen?
A: 11.19
Consider one molecule of water. How many percent of this molecule is hydrogen?
A: 11.19
In the oxidation of methane alcohol in air, if 209 grams of this substance are used up, how many grams of water are produced?
A: 235
How heavy (in grams) is one molecule of ethanol
A: 46.07
Consider the burning of methanol in air. If 209 grams of methanol are used up in the combustion, how much water (in grams) is produced?
A: 235
What is the chemical reaction characterized by the union of reactants
A: synthesis
What is the chemical reaction characterized by the union of reactants?
A: synthesis
How heavy is a molecule of sodium hypochlorite? Express your answer in grams.
A: 74.44
How heavy (in grams) is one molecule of sodium hypochlorite?
A: 74.44
When burning 1200 grams of carbon, how much carbon monoxide (in grams) will be produced?
A: 2800
In the burning of 1200 grams of carbon, how many grams of carbon monoxide will be produced?
A: 2800
When 124 grams of aluminum reacts with 601 grams of Fe2O3, determine how many grams of Al2O3 are formed.
A: 234
How many molecules are in 3 moles of calcium tetrachloride?
A: 1.8066 x 10^24
In a molecule of ammonia, how many percent is nitrogen?
A: 82.24
Consider a molecule of ammonia. How many percent of this molecule is nitrogen?
A: 82.24
How heavy (in grams) is one molecule of ethanol?
A: 46.07
Consider a molecule of ethane. How many percent of ethane is carbon?
A: 79.89
In one molecule of ethane, how many percent of this molecule is carbon?
A: 79.89
In a molecule of potassium hydroxide, how many percent of this molecule is oxygen?
A: 28.52
The molecular mass of hydrochloric acid is how many grams?
A: 36.46
The mass of hydrochloric acid is how many grams?
A: 36.46
How many grams is a molecule of hydrochloric acid?
A: 36.46
How heavy is a molecule of sodium hypochlorite? Express your answer in grams
A: 74.44
How many molecules are there in 8 moles of benzoic acid?
A: 4.8176 x 10^24
Consider the reaction of 124 grams of Al with 601 grams of Fe2O3. Compute for the mass (in grams) of Al2O3 formed.
A: 234
Consider one molecule of sodium sulfate. Determine the percentage of sulfur in it.
A: 22.57
In a molecule of sodium sulfate, determine the percentage of sulfur in it.
A: 22.57
In one molecule of sodium sulfate, how many percent of it is sulfur?
A: 22.57
How many molecules are there in 0.75 mole of sodium chloride?
A: 4.5165 x 10^23
A 0.75 mole of sodium chloride has ___ x 1023 atoms. Note: The answer must be in 4 decimal places.
A: 4.5165
Find the molecular mass of hydrogen peroxide in grams?
A: 34.01
What is the molecular mass (in grams) of hydrogen peroxide?
A: 34.01
Determine the molecular mass (in grams) of dinitrogen trioxide?
A: 76.01
How heavy (in grams) is one molecule of ethanol?
A: 46.07
How many grams is one molecule of ethanol?
A: 46.07
Suppose you want to burn 1200 grams of graphite. How much oxygen (in grams) would you need?
A: 1600
If you want to burn 1200 grams of carbon, how many grams of oxygen would you need?
A: 1600
How many grams is one molecule of calcium oxide?
A: 56.08
How heavy (in grams) is calcium oxide?
A: 56.08
How heavy (in grams) is one molecule of sulfuric acid?
A: 98.07
How many grams is a molecule of sulfuric acid?
A: 98.07
What is the mass (in grams) of sulfuric acid?
A: 98.07
Determine how many atoms of carbon dioxide does 0.55 mole of this molecule has? ____ x 1021
A: 7.53
A 0.55 mole of carbon dioxide has ___ x 1021 atoms.
A: 7.53
How many molecules does 0.55 mole of carbon monoxide has?
A: 7.53 x 10^21
What do you call the particle with more positive charges than negative charges?
A: cation
What is the molecular mass (in grams) of calcium carbonate?
A: 162.11
What do you call the agent in a redox reaction from which electrons are released?
A: reducing
Agent in a redox reaction from which electrons are removed.
A: reducing
The twelve-gauge copper wire is roughly cylindrical and has a diameter of approximately 0.1040 in. The density of copper is 8.92 g/cm3 and copper atoms have an approximate atomic radius of 135 pm. What is the mass (in grams) of a 100-ft piece of copper wire?
A: 1491
Quantity used to measure distance between two points.
A: length
Quantity that measures the distance between two bodies
A: length
Made up of proton/s, neutron/s, and electron/s.
A: atom
Composed of proton/s, neutron/s, and electron/s
A: atom
This body is composed of proton/s, neutron/s, and electron/s.
A: atom
Which of the following is the lightest particle?
A: electron
Term used to refer to a charged atom.
A: ion
Which is the lightest: proton, neutron, or electron?
A: electron
Particle that contains more positive charges than negative charges.
A: cation
Particle with more positive charges than negative charges
A: cation
Science that deals with the composition of materials.
A: chemistry
Study dealing with the composition of materials
A: chemistry
What kind of acid completely dissociates when mixed with water?
A: strong
Composed of a nucleus and electron/s.
A: atom
Always has a nucleus and electron/s
A: atom
Science that deals with energy and its interactions with matter.
A: physics
Science of energy and its interactions with different materials
A: physics
Particle with more negative charges than positive ones.
A: anion
Particle having more negative charges than positive ones
A: anion
Type of bond between a cation and an anion.
A: ionic
Form of atom that is positively charged with respect to its neutral state.
A: cation
What type of bond exists between a cation and an anion?
A: ionic
Atom with a positive charge with respect to its neutral state
A: cation
Chemistry that deals with compounds with carbon
A: organic
What quantity is constant in Charles's law?
A: pressure
Formed when atoms combine through bonds.
A: molecule
How many grams is one molecule of sodium bicarbonate?
A: 84.01
What is the mass (in grams) of sodium bicarbonate?
A: 84.01
Amount of material contained by a body.
A: mass
Measurement of the amount of material in a body
A: mass
This refers to the amount of material in any given body.
A: mass
An atom that is negatively charged.
A: anion
Negatively-charged atom
A: anion
Chemistry of materials related to living tissues.
A: biochemistry
Chemistry living tissues.
A: biochemistry
This branch of chemistry is related to living tissues.
A: biochemistry
Method of comparing an unknown quantity with a known quantity
A: measurement
Process of comparing an unknown quantity with a known quantity.
A: measurement
Bond formed by the sharing of electrons between atoms.
A: covalent
Bond formed through the sharing of electrons between atoms
A: covalent
What kind of bond is formed by the sharing of electrons between atoms?
A: covalent
Comparison of something unknown with a standard.
A: measurement
Quantity used to express the amount of a substance.
A: mole
What is the percentage of hydrogen in propanoic acid?
A: 8.16
How many percent of propanoic acid is hydrogen?
A: 8.16
Quantity expressed with cubic unit.
A: volume
Three moles of methane has ____ x 1024 molecules.
A: 1.8066
Eight moles of benzene has ____ x 1024 molecules. Note: The answer must be in 4 decimal places.
A: 4.8176
Reaction wherein the anions and cations of two compounds switch places to form two entirely different compounds.
A: double replacement
This reaction involves the anions and cations of two compounds switching places to form two entirely different compounds.
A: double replacement
Uses Avogadro’s number to have a numerical value.
A: mole
Reaction that involves the transfer of protons from an acid to a base.
A: acid-base
Reaction characterized by production of a complex product from simple reactants.
A: synthesis
It is the phase in which the sister chromatid separate.
A: anaphase
What type of reaction is characterized by the production of a complex product from simple reactants?
A: synthesis
How many percent of one molecule of potassium hydroxide is oxygen?
A: 28.52
How much (in percent) of one molecule of potassium hydroxide is oxygen?
A: 28.52
This particle has more negative charges than positive ones.
A: anion
Reaction involved when a complex reactant is broken down into a simpler product.
A: (synthesis)
Reaction generally described as: AB + C AC + B
A: single replacement
This type of reaction is generally described as: AB + C -> AC + B
A: single replacement
What is the process of comparing an unknown quantity with a known quantity?
A: measurement
Chemical reaction characterized by the combination of reactants.
A: synthesis
How much volume (in L) will 0.20 mol hydrogen iodide at 300 K and 100.0 kPa occupy? Use R = 8.314 kPa*L/(K*mol) = 0.08205 atm*L/(mol*K).
A: 5
How many molecules are present in 3 moles of methanal?
A: 1.8066 x 10^24
Type of bond between an anion and a cation
A: ionic
In a titration experiment, 500 mL of gaseous hydrochloric acid at 300 K and 100 kPa dissolved in pure water is needed to neutralize 12.5 mL of sodium hydroxide. What is the concentration of the basic solution (in mol/L)?
A: 1.60
Substance formed when atoms bond with each other
A: molecule
Identify which quantity is constant in Boyle's law.
A: temperature
What is the resulting concentration (in mol/L) of aqueous hydrochloric acid if 500 mL of its gaseous form at 300 K and 100 kPa will be dissolved in 100 mL pure water? Use 8.314 kPa*L/(K*mol).
A: 0.200
Consider the reaction of 3.66 g of a sample containing zinc (atomic weight = 65.4) and magnesium (atomic weight = 24.3) with a dilute acid to yield 2.470 L of hydrogen gas at 101.0 kPa and 300 K. What is the percentage of zinc in the sample?
A: 30
(2 points) Suppose 4 moles of nitrogen gas are confined to a 6.0 L container at 1770C and 12.0 atm. If the container will be allowed to isothermally expand to 36.0 L, determine the final pressure experienced by the gas. (Express the answer in atm)
A: 2
Gas law involving constant pressure and temperature.
A: avogadro’s law
Quantities specifically used in scientific measurements
A: SI
(2 points) A 60.0 liter tank of gaseous chlorine at 270C and 125 atm suddenly had a leak. When this leak was discovered, the pressure was found to have reduced to 50 atm. Determine how many moles of chlorine escaped from the tank.
A: 187.5
Consider 6.2 liters of an ideal gas compressed at 3.0 atm and maintained at 37 degrees Celsius. Determine how many moles of this gas are contained.
A: 0.75
One liter of an air sample at 250 degrees Celsius and 1 atm is compressed to 3 mL at a pressure of 1000 atm. Determine the temperature of the air sample in kelvins.
A: 983
Gas law involving constant temperature.
A: Boyle's Law
Treating 50.0 mL of silver nitrate solution with excess hydrogen iodide gas produces 2.35 grams of silver iodide. Compute for the concentration (in M) of the silver nitrate solution.
A: 0.2
(3 points) Suppose methanol will be burned in air. If 209 grams of this substance are used up in the reaction, how many grams of water are produced?
A: 235
(2 points) Consider a 0.316 mole sample of nitrogen gas. If this is placed in a 4-L container at 315 K, what is the pressure (in torr) of the gas?
A: 1550