CHEM-112 Week 1-10
AMA OED ANSWERBasic component that makes up any kind of material.
This basically makes up any kind of material
Anything that occupies space and has mass
What is the general term for any body that has mass and occupies space?
General term referring to anything that occupies space and has mass
Study of materials and its components
General term for anything with mass and has volume
Quantities standardized for scientific use
Smallest building block of any material
Branch of chemistry that deals with compounds containing carbon
Path of electron around the nucleus of an atom
Most basic building block of any substance
Quantity with square unit
What kind of base forms hydroxide ions when mixed with water?
Path followed by an electron around the nucleus of an atom
What do you call the path of an electron around the nucleus of an atom?
Science that deals with the chemical composition of chemical processes associated with the Earth and other planets.
Reaction involved when a complex reactant is broken down into a simpler product.
What kind of reaction is involved when a complex reactant is simplified?
Science dealing with the composition of processes involving the Earth and other planets
Quantity that refers to the space occupied by a body
Quantity referring to the space occupied by a body
Gas law involving constant pressure.
Product of the combination of atoms during chemical reactions
Results from the combination of atoms during chemical reactions
What substance results from the combination of atoms during chemical reactions?
Term used to refer to a charged atom
In one molecule of water, how many percent is hydrogen?
Consider one molecule of water. How many percent of this molecule is hydrogen?
In the oxidation of methane alcohol in air, if 209 grams of this substance are used up, how many grams of water are produced?
How heavy (in grams) is one molecule of ethanol
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?
What is the chemical reaction characterized by the union of reactants
What is the chemical reaction characterized by the union of reactants?
How heavy is a molecule of sodium hypochlorite? Express your answer in grams.
How heavy (in grams) is one molecule of sodium hypochlorite?
When burning 1200 grams of carbon, how much carbon monoxide (in grams) will be produced?
In the burning of 1200 grams of carbon, how many grams of carbon monoxide will be produced?
When 124 grams of aluminum reacts with 601 grams of Fe2O3, determine how many grams of Al2O3 are formed.
How many molecules are in 3 moles of calcium tetrachloride?
In a molecule of ammonia, how many percent is nitrogen?
Consider a molecule of ammonia. How many percent of this molecule is nitrogen?
How heavy (in grams) is one molecule of ethanol?
Consider a molecule of ethane. How many percent of ethane is carbon?
In one molecule of ethane, how many percent of this molecule is carbon?
In a molecule of potassium hydroxide, how many percent of this molecule is oxygen?
The molecular mass of hydrochloric acid is how many grams?
The mass of hydrochloric acid is how many grams?
How many grams is a molecule of hydrochloric acid?
How heavy is a molecule of sodium hypochlorite? Express your answer in grams
How many molecules are there in 8 moles of benzoic acid?
Consider the reaction of 124 grams of Al with 601 grams of Fe2O3. Compute for the mass (in grams) of Al2O3 formed.
Consider one molecule of sodium sulfate. Determine the percentage of sulfur in it.
In a molecule of sodium sulfate, determine the percentage of sulfur in it.
In one molecule of sodium sulfate, how many percent of it is sulfur?
How many molecules are there in 0.75 mole of sodium chloride?
A 0.75 mole of sodium chloride has ___ x 10^23 atoms. Note: The answer must be in 4 decimal places.
Find the molecular mass of hydrogen peroxide in grams?
What is the molecular mass (in grams) of hydrogen peroxide?
Determine the molecular mass (in grams) of dinitrogen trioxide?
How heavy (in grams) is one molecule of ethanol?
How many grams is one molecule of ethanol?
Suppose you want to burn 1200 grams of graphite. How much oxygen (in grams) would you need?
If you want to burn 1200 grams of carbon, how many grams of oxygen would you need?
How many grams is one molecule of calcium oxide?
How heavy (in grams) is calcium oxide?
How heavy (in grams) is one molecule of sulfuric acid?
How many grams is a molecule of sulfuric acid?
What is the mass (in grams) of sulfuric acid?
Determine how many atoms of carbon dioxide does 0.55 mole of this molecule has? ____ x 10^21
A 0.55 mole of carbon dioxide has ___ x 10^21 atoms.
How many molecules does 0.55 mole of carbon monoxide has?
What do you call the particle with more positive charges than negative charges?
What is the molecular mass (in grams) of calcium carbonate?
What do you call the agent in a redox reaction from which electrons are released?
Agent in a redox reaction from which electrons are removed.
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/cm^3 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?
Quantity used to measure distance between two points.
Quantity that measures the distance between two bodies
Made up of proton/s, neutron/s, and electron/s.
Composed of proton/s, neutron/s, and electron/s
This body is composed of proton/s, neutron/s, and electron/s.
Which of the following is the lightest particle?
Term used to refer to a charged atom.
Which is the lightest: proton, neutron, or electron?
Particle that contains more positive charges than negative charges.
Particle with more positive charges than negative charges
Science that deals with the composition of materials.
Study dealing with the composition of materials
What kind of acid completely dissociates when mixed with water?
Composed of a nucleus and electron/s.
Always has a nucleus and electron/s
Science that deals with energy and its interactions with matter.
Science of energy and its interactions with different materials
Particle with more negative charges than positive ones.
Particle having more negative charges than positive ones
Type of bond between a cation and an anion.
Form of atom that is positively charged with respect to its neutral state.
What type of bond exists between a cation and an anion?
Atom with a positive charge with respect to its neutral state
Chemistry that deals with compounds with carbon
What quantity is constant in Charles's law?
Formed when atoms combine through bonds.
How many grams is one molecule of sodium bicarbonate?
What is the mass (in grams) of sodium bicarbonate?
Amount of material contained by a body.
Measurement of the amount of material in a body
This refers to the amount of material in any given body.
An atom that is negatively charged.
Negatively-charged atom
Chemistry of materials related to living tissues.
Chemistry living tissues.
This branch of chemistry is related to living tissues.
Method of comparing an unknown quantity with a known quantity
Process of comparing an unknown quantity with a known quantity.
Bond formed by the sharing of electrons between atoms.
Bond formed through the sharing of electrons between atoms
What kind of bond is formed by the sharing of electrons between atoms?
Comparison of something unknown with a standard.
Quantity used to express the amount of a substance.
What is the percentage of hydrogen in propanoic acid?
How many percent of propanoic acid is hydrogen?
Quantity expressed with cubic unit.
Three moles of methane has ____ x 10^24 molecules.
Eight moles of benzene has ____ x 10^24 molecules. Note: The answer must be in 4 decimal places.
Reaction wherein the anions and cations of two compounds switch places to form two entirely different compounds.
This reaction involves the anions and cations of two compounds switching places to form two entirely different compounds.
Uses Avogadro's number to have a numerical value.
Reaction that involves the transfer of protons from an acid to a base.
Reaction characterized by production of a complex product from simple reactants.
It is the phase in which the sister chromatid separate.
What type of reaction is characterized by the production of a complex product from simple reactants?
How many percent of one molecule of potassium hydroxide is oxygen?
How much (in percent) of one molecule of potassium hydroxide is oxygen?
This particle has more negative charges than positive ones.
Reaction involved when a complex reactant is broken down into a simpler product.
Reaction generally described as: AB + C AC + B
This type of reaction is generally described as: AB + C -> AC + B
What is the process of comparing an unknown quantity with a known quantity?
Chemical reaction characterized by the combination of reactants.
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).
How many molecules are present in 3 moles of methanal?
Type of bond between an anion and a cation
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)?
Substance formed when atoms bond with each other
Identify which quantity is constant in Boyle's law.
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).
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?
Suppose 4 moles of nitrogen gas are confined to a 6.0 L container at 177°C 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)
Gas law involving constant pressure and temperature.
Quantities specifically used in scientific measurements
A 60.0 liter tank of gaseous chlorine at 27°C 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.
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.
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.
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?
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?
Gas law involving constant temperature.
Frequently Asked Questions
What is the basic building block of matter?
The basic building block of matter is the atom, which consists of protons, neutrons, and electrons.
What are the main types of chemical reactions?
Main types include synthesis (combination of reactants), decomposition (breaking down complex reactants), single replacement, double replacement, and acid-base reactions.
What is the difference between an ion and a molecule?
An ion is a charged atom or group of atoms (e.g., cation or anion), while a molecule is a neutral substance formed by atoms bonded together, like water or carbon dioxide.
What are SI units and why are they important?
SI units are standardized quantities (e.g., meter, kilogram, mole) used in scientific measurements to ensure consistency and accuracy across experiments worldwide.
What are the branches of chemistry?
Branches include organic (carbon compounds), inorganic, physical, biochemistry (living tissues), and geochemistry (Earth and planetary processes).
How do gas laws like Boyle's and Charles's Law work?
Boyle's Law states that at constant temperature, pressure and volume are inversely proportional. Charles's Law states that at constant pressure, volume and temperature are directly proportional.