Chem 1311 exam 1 - Study guides, Class notes & Summaries

Which pair of elements would you expect to exhibit the greatest similarity in their physical and chemical properties? A)Cs, Ba B)H, Li C) Ga, Ge D)Ca, Sr E)C, O correct answersD) Ca, Sr What is the correct answer (reported to the proper number of significant figrues) to the following? 6.3x3.25 = A)20.5 B)20 C)20.48 D)20.475 E)21 correct answersB) 20 If matter is uniform throughout and cannot be separated into other substances by physical means, it is ________. A) An elem...

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Which of the following is the general electron configuration for the outermost electrons of elements in the alkaline earth group? 1) A) ns2np5 B) ns2 C) ns1 D) ns2np6(n -1)d6 E) ns2np4 2) Which of the following is the electron configuration for the bromide ion? 2) A) [Kr]5s24d105p7 B) [Xe] C) [Kr] D) [Ar] E) [Ar]4s23d104p7 3) Valence electrons are electrons located 3) A) in the out...

Of the following only,_________ is an extensive property. -Temperature -Boiling point -Freezing point -Density -Volume correct answersVolume In the following list, only __________ is not an example of a chemical reaction. -the production of hydrogen gas from water -chopping a log into sawdust -the tarnishing of a copper penny -burning a plastic water bottle -charging a cellular phone correct answerschopping a log into sawdust In which of the following numbers are AL...

Atom correct answer: Smallest quantity of matter that retains the properties of matter. Building blocks of all matter Element correct answer: A substance made up of a single type of atom. α Particle correct answer: A positively charged particle consisting of two protons and two neutrons, emitted in radioactive decay or nuclear fission. β Particle correct answer: High-speed electron, especially emitted in radioactive decay γ Rays correct answer: high-energy electromagnetic rad...

Chemistry correct answersThe study of matter, its properties, and the changes that matter undergoes Matter correct answersThe physical material of the universe; it is anything that has mass and occupies space Property correct answersAny characteristic that allows us to recognize a particular type of matter and to distinguish other types Atoms correct answersBuilding blocks of matter Molecules correct answerstwo or more atoms are joined in specific shapes By its physical state and ...

CHEM 1311 Exam Questions with All Correct Answers How many significant figures should be retained in the result of the following calculation 12.00000 x 0.9893 + 13.00335 + 0.0107 - Answer-3 of the following, only ________ is an extensive property. - Answer-Volume Iron has a density of 7.9 g/cm3. What is the mass of a cube of iron with the length of one side equal to 55.0 mm? - Answer-1.3 x 10^3 In the following list, only ______ is not an example of a chemical reaction. - Answer-cho...

CHEM 1311 Exam Questions and Answers All Correct A tentative explanation for a set of observations that can be tested by further experimentation is referred to as - Answer-a hypothesis Identify which of the following are examples of physical properties - Answer--The boiling point of ethanol -The Density of Neon gas -The melting point of gold -The condensation of Steam Give the number of significant figures in each of the following numbers. a. 0. b. 1000. - Answer-6 and 4 The high...

chemical property correct answer: the way substances may change/react to become another substance physical property correct answer: can be observed without any change to identification and/or composition matter correct answer: anything that has mass and occupies space reactivity, stability, flammability, toxicity, fermentation correct answer: examples of chemical properties malleability, ductility, conductivity, viscosity, boiling/melting point correct answer: examples of physic...

The Greeks correct answerstried to explain chemical changes, proposed four fundamental substances (earth, fire, water, air), first proposed atoms as fundamental particles The Alchemists correct answers"pseudoscience"/tried to change a base metal of lead into gold Robert Boyle correct answersFirst "chemist"/quantitative measurements on gases/proposed the concept of elements Joseph Priestly correct answersdiscovered oxygen/carefully studied chemical reactions Law of Mass Conservati...

chemical property correct answersthe way substances may change/react to become another substance physical property correct answerscan be observed without any change to identification and/or composition matter correct answersanything that has mass and occupies space reactivity, stability, flammability, toxicity, fermentation correct answersexamples of chemical properties malleability, ductility, conductivity, viscosity, boiling/melting point correct answersexamples of physical propert...