CHEM 120 TESTS COMPILATION BUNDLE

chemical bond correct answer: the attractive forces that holds two atoms together in a more complex unit ionic bond correct answer: a chemical bond formed through the transfer of one or more electrons from one atom to another atom, metal and nonmetal ionic compound correct answer: a compoun...

SI unit for Temperature correct answer: C F correct answer: (9/5 C) + 32 C correct answer: 5/9 (F -32) K correct answer: C+273.15 density correct answer: mass/volume 1 mL correct answer: =1cm^3 = 1cc percent error correct answer: difference from known value/known value x 100...

Significant Figure correct answer: a digit that is either reliably known or closely estimated conversion factors correct answer: relationship between two quantities expressed as a fraction (1 inch/2.45cm) element correct answer: the most basic form of matter that exists under ordinary con...

How many bonds can nitrogen have? Which rule or principle should be used? A) Five bonds; octet rule. B) Three bonds; octet rule. C) Three bonds; the Hund's rule. D) Five bonds; the Aufbau Principle. correct answer: B When two hydrogen atoms meet, they will attract to each other and form a...

chemistry correct answer: the science that tries to understand how matter behaves by studying how atoms and molecules behave scientific method correct answer: ways of learning that emphasizes observation and experimentation (self correcting) observation correct answer: we go out in nature a...

What is a good scientific definition of a chemical? correct answer: Chemical- any substance made up of one or more elements from the periodic table What is the difficulty in defining the chemical industry in terms of the periodic chart? correct answer: The definition of a chemical is too broad....

Which of these contributions did alchemists of the Middle Ages make to modern science? correct answer: -Sun-centered universe and metallurgy -Metallurgy and the development of scientific techniques -The scientific method and law of conservation of mass -Law of conservation of matter and first at...

Levelling Effect correct answer: the inability of a solvent to differentiate amongst the relative strength of all acids OH- correct answer: the strongest base possible H3O+ correct answer: the strongest acid possible Differentiating effect correct answer: the ability of a solvent to dif...

define matter correct answer: anything that has mass and takes up space what is not considered matter? correct answer: light, heat, electricity definite shape, definite volume correct answer: solid indefinite shape, definite volume correct answer: liquid indefinite shape, indefinite ...

molecular mass (molecular weight) correct answer: the sum of the atomic masses, in atomic mass units, of all the atoms in the formula of a compound empirical formula correct answer: a chemical formula showing the ratio of elements in a compound rather than the total number of atoms Avogadro...

What is the correct order of melting points for the following alkanes, from highest to lowest temperature? correct answer: heptane > hexane > ethane > methane 2. Given an alkane that contains 25 carbon atoms. How many hydrogen atoms are present in its structure? a) correct answer: ) 52...

ionic compounds correct answer: -deals with charged particles -oppositely charged particles are attracted to each other -look for presence of metals and polyatomic ions molecular compounds correct answer: -share electrons -nonmetals -no polyatomic ions unless its an acid Type I metals co...

what is the formula for ionic compound correct answer: Xm+ Yn-= XnYm name the ionic compound Na+ I- correct answer: NaI name the ionic compound Ba2+ O2- correct answer: BaO Name ionic compounds Mg2+ N-3 correct answer: Cross multiply Mg3N2 (numbers are subscript) What is an ionic com...

Polyatomic ions correct answer: ions that are made of more than one atom Nitrate correct answer: NO3- Nitrite correct answer: NO2- bicarbonate (hydrogen carbonate) correct answer: HCO3- Sulfate correct answer: SO4 2- Sulfite correct answer: SO3 2- Carbonate correct answer: C...