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Side A ------ Side B
Chemistry is the study of... ------ Matter & the transformation of matter
Applied research: ------ Developing basic research; determining the lightest and strongest metal to be used for an airplane wing.
50mL small BBs + 50 mL large BBs = 90 mL of BBs ------ Many of the smaller BBs are able to fit within the pockets of space that were empty within the 50 mL of large BBs
Scientific hypothesis is: ------ Testable assumption used to explain an observation
Which of the following represents the largest quantity of mass?a. 100 kgb. 100,000,000,000 microgramsc.100,000,000 milligramsd. 100,000 ge. All the masses are the same ------ All the masses are the same
Which has stronger attractions among its submicroscopic particles: a solid at 25 C or a gas at 25 C? ------ The attractions among the submicroscopic particles of the solid must be stronger than the attractions among the particles of the gas.
Which of the following statements best describes an element? ------ A material consisting of only one type of atom
Which of the following would be considered a physical property? ------ density
How many atoms of O are in H3OClO4? ------ 5 atoms
If you filter sea water to remove all of the particles you would be left with a clear... ------ homogeneous mixture called a solution
Which of the following statements from Dalton's atomic theory would best describe the following observation: ------ Atoms can be neither created nor destroyed in a chemical reaction.
Which of the following statements best summarizes the Law of Definite Proportions? ------ The mass ratio of the elements in a compound will be the same regardless of how the compound was made.
The following statement describes which subatomic particle best? It has a relatively large mass ------ A proton and neutron (P&N)
If the particles of a cathode ray had a greater electric charge, the ray passing through a magnetic field would bend: ------ more because of a greater electromagnetic attraction
What does the following element description 186O? ------ an oxygen atom with 6 protons and 12 neutrons
If a material has a half-life of 24 hours, how long do you have to wait until the amount of radioisotope is 1/8 its original amount? ------ 96 hours
A rem is: ------ A unit for measuring radiation exposure
Which of the following statements best describes the strong nuclear force? ------ The force is very strong but has a very short range. (Strong short little man)
Which of the following nuclear equations correctly describes alpha emission? ------ U ...Th + He (Uthhe)
Which of the following is a major disadvantage of nuclear-fission-based power plants? ------ The byproducts of the fission process are radioactive and have very long half-lives & The power plants are complex and there are many safety requirements to prevent contamination of the environment. (BYPRODUCTS RADIOACTIVE HALF-LIVES,COMPLEX SAFETY REQUIREMENTS)
When food is irradiated with gamma rays from a cobalt-60 source, does the food become radioactive? Why? ------ No. The gamma rays do not have sufficient energy to initiate the nuclear reaction in the atoms of the food.
An example of basic research is: ------ The study of the composition of the atom.
Not considered matter? ------ LIGHT!
When water freezes it expands. What does this say about the density of ice compared with the density of water? ------ Ice is LESS DENSE than water because it has MORE VOLUME for the same mass.
The boiling point of methanol is 65 C and the boiling point of ethanol is 78 C. Which of the following statements is true? ------ At 70 C you would have methanol gas and liquid ethanol.
How many atoms are in one molecule of Na2SO4? ------ 7
Which atom is largest? ------ Rb
Which of the following elements are in the same period as Mg? ------ Cl (Periods go across)
Elements that are in the same ______ have a tendency to have very similar chemical properties due to periodic trends. ------ GROUP!
Classify the following as element, compound, or mixture: table salt, stainless steel, table sugar, aluminum ice. ------ Compound; Mixture; Compound ; Element; CompoundCMCEC
Which of the following is NOT a property of an electron? ------ charge CHANGES depending on MASS
Which of the following statements from Dalton's atomic theory would best describe the following observation:The mass of all of the products is equal to the mass of all the reactants in a given reaction. ------ Atoms can be neither created nor destroyed in a chemical reaction.
You heat 20 g of a metal in an open container and after the experiment you are left with 35 g of a powdery substance. Which statement best explains what happened? ------ The metal reacted with some air or something else we did not originally measure.
What does the following Element 238 92 U mean? ------ Uranium atom with 146 NEUTRONS and 92 PROTONS.
Why are the atomic masses listed in the periodic table not whole numbers? ------ The atomic masses are average atomic masses of various elemental isotopes
If an element has 18 protons and 20 neutrons and 18 electrons, which expression correctly identifies the element? ------ Argon-38 (18,20,18)
If a material has a half-life of 24 hours, how long do you have to wait until the amount of radioisotope is 1/4 its original amount? ------ 48 hours
Why wouldn't you use carbon-14 dating on a piece of shell that was estimated to be 1 million years old? ------ The amount of radioactive carbon in the sample would probably be too small to measure.
What is the main technical difficulty in dealing with fusion reactions? ------ The amount of energy needed to overcome the electrical repulsion of the reactants is extremely high
How is it possible for an element ot decay "forward in the periodic table"-- that is, to decay to an element of higher atomic number? ------ As a beta particle is released, a neutron transforms into a proton (DECAY HIGHER=TRANSFORMER PROTON)

Side A ------ Side B
Chemistry is the study of... ------ Matter & the transformation of matter
Applied research: ------ Developing basic research; determining the lightest and strongest metal to be used for an airplane wing.
50mL small BBs + 50 mL large BBs = 90 mL of BBs ------ Many of the smaller BBs are able to fit within the pockets of space that were empty within the 50 mL of large BBs
Scientific hypothesis is: ------ Testable assumption used to explain an observation
Which of the following represents the largest quantity of mass?a. 100 kgb. 100,000,000,000 microgramsc.100,000,000 milligramsd. 100,000 ge. All the masses are the same ------ All the masses are the same
Which has stronger attractions among its submicroscopic particles: a solid at 25 C or a gas at 25 C? ------ The attractions among the submicroscopic particles of the solid must be stronger than the attractions among the particles of the gas.
Which of the following statements best describes an element? ------ A material consisting of only one type of atom
Which of the following would be considered a physical property? ------ density
How many atoms of O are in H3OClO4? ------ 5 atoms
If you filter sea water to remove all of the particles you would be left with a clear... ------ homogeneous mixture called a solution
Which of the following statements from Dalton's atomic theory would best describe the following observation: ------ Atoms can be neither created nor destroyed in a chemical reaction.
Which of the following statements best summarizes the Law of Definite Proportions? ------ The mass ratio of the elements in a compound will be the same regardless of how the compound was made.
The following statement describes which subatomic particle best? It has a relatively large mass ------ A proton and neutron (P&N)
If the particles of a cathode ray had a greater electric charge, the ray passing through a magnetic field would bend: ------ more because of a greater electromagnetic attraction
What does the following element description 186O? ------ an oxygen atom with 6 protons and 12 neutrons
If a material has a half-life of 24 hours, how long do you have to wait until the amount of radioisotope is 1/8 its original amount? ------ 96 hours
A rem is: ------ A unit for measuring radiation exposure
Which of the following statements best describes the strong nuclear force? ------ The force is very strong but has a very short range. (Strong short little man)
Which of the following nuclear equations correctly describes alpha emission? ------ U ...Th + He (Uthhe)
Which of the following is a major disadvantage of nuclear-fission-based power plants? ------ The byproducts of the fission process are radioactive and have very long half-lives & The power plants are complex and there are many safety requirements to prevent contamination of the environment. (BYPRODUCTS RADIOACTIVE HALF-LIVES,COMPLEX SAFETY REQUIREMENTS)
When food is irradiated with gamma rays from a cobalt-60 source, does the food become radioactive? Why? ------ No. The gamma rays do not have sufficient energy to initiate the nuclear reaction in the atoms of the food.
An example of basic research is: ------ The study of the composition of the atom.
Not considered matter? ------ LIGHT!
When water freezes it expands. What does this say about the density of ice compared with the density of water? ------ Ice is LESS DENSE than water because it has MORE VOLUME for the same mass.
The boiling point of methanol is 65 C and the boiling point of ethanol is 78 C. Which of the following statements is true? ------ At 70 C you would have methanol gas and liquid ethanol.
How many atoms are in one molecule of Na2SO4? ------ 7
Which atom is largest? ------ Rb
Which of the following elements are in the same period as Mg? ------ Cl (Periods go across)
Elements that are in the same ______ have a tendency to have very similar chemical properties due to periodic trends. ------ GROUP!
Classify the following as element, compound, or mixture: table salt, stainless steel, table sugar, aluminum ice. ------ Compound; Mixture; Compound ; Element; CompoundCMCEC
Which of the following is NOT a property of an electron? ------ charge CHANGES depending on MASS
Which of the following statements from Dalton's atomic theory would best describe the following observation:The mass of all of the products is equal to the mass of all the reactants in a given reaction. ------ Atoms can be neither created nor destroyed in a chemical reaction.
You heat 20 g of a metal in an open container and after the experiment you are left with 35 g of a powdery substance. Which statement best explains what happened? ------ The metal reacted with some air or something else we did not originally measure.
What does the following Element 238 92 U mean? ------ Uranium atom with 146 NEUTRONS and 92 PROTONS.
Why are the atomic masses listed in the periodic table not whole numbers? ------ The atomic masses are average atomic masses of various elemental isotopes
If an element has 18 protons and 20 neutrons and 18 electrons, which expression correctly identifies the element? ------ Argon-38 (18,20,18)
If a material has a half-life of 24 hours, how long do you have to wait until the amount of radioisotope is 1/4 its original amount? ------ 48 hours
Why wouldn't you use carbon-14 dating on a piece of shell that was estimated to be 1 million years old? ------ The amount of radioactive carbon in the sample would probably be too small to measure.
What is the main technical difficulty in dealing with fusion reactions? ------ The amount of energy needed to overcome the electrical repulsion of the reactants is extremely high
How is it possible for an element ot decay "forward in the periodic table"-- that is, to decay to an element of higher atomic number? ------ As a beta particle is released, a neutron transforms into a proton (DECAY HIGHER=TRANSFORMER PROTON)