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

Atom correct answersSmallest quantity of matter that retains the properties of matter. Building blocks of all matter Element correct answersA substance made up of a single type of atom. α Particle correct answersA positively charged particle consisting of two protons and two neutrons, emitted in radioactive decay or nuclear fission. β Particle correct answersHigh-speed electron, especially emitted in radioactive decay γ Rays correct answershigh-energy electromagnetic radiation emi...

Which of the following best describes the principle quantum number (n)? correct answersThe principle quantum number (n) describes the orbital shell or level that an electron can be found in. It is always a positive integer, such as 1,2,3. What are the n and l values for an electron in the 4p? correct answersn = 4 l = 1 What are the n and l values that describe an electron in the 5s level? correct answersn = 5 l = 0 Which of the following represents the electron configuration of Si? corr...

Antoine Lavoisier ( ) correct answersExplained the nature of combustion and discovered the Law of the Conservation of Mass 1) law of conservation of mass correct answers-in a chemical reaction, matter is neither created nor destroyed -total mass of reactants = total mass of products -In a chemical reaction, matter is not created or destroyed ex. -a bomb:-when it blows up-new compounds are formed-the mass stays the same. -burning gas:-gas and oxygen combine to produce carbon dioxide an...

Chem 1311 Review 1Multiple ChoiceIdentify the choice that best completes the statement or answers the question. ____1.Which of the following statements isincorrect?a.A body in motion possesses kineti c energy becauseof its motion.b.An object possesses potential energy because of itsposition or composition.c.Nuclear energy is an important kind of potentialenergy.d.Chemical reactions and physical changes thatrelease energy to their surroundings areendothermic.e.The Law of Conservation of Matter an...

the only type of movement particles in a solid do is _______ correct answersvibrational physical properties correct answersobserved or measured without changing the substance chemical properties correct answersonly observed by changing the substance intensive properties correct answersdo not depend on the amount of matter present extensive properties correct answersdepend on the amount of matter that is present physical change correct answersA change in a substance that does not c...