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Atomic Concepts
Periodic Table
Moles/Stoichiometry
Chemical Bonding
Physical Behavior of Matter
100

The mass of each proton and each neutron is approximately equal to

(1) 1 g (3) 1 u (2) 1 mL (4) 1 mol

1 u

100

4 The elements on the Periodic Table of the Elements are arranged in order of increasing

(1) atomic mass   (2) atomic number

(3) mass number  (4) oxidation state

  (2) atomic number

100
Describe a laboratory procedure that can be used to recover the solid solute from the aqueous solution.
What is evaporation, boiling, or distillation
100
Explain, in terms of valence electrons, why the bonding in magnesium oxide, MgO, is similar to the bonding in barium chloride, BaCl2
What is Mg and Ba both have 2 valence electrons
100

All matter can be classified as

(1) an element     

(2) a compound

(3) a mixture or an element

(4) a mixture or a substance

(4) a mixture or a substance

200
An atom of which element has the greatest attraction for electrons in a chemical bond?
What is Fluorine because it has the highest electronegativity
200
Glycine, NH2CH2COOH, is an organic compound found in proteins. Calculate the gram-formula mass of glycine. Your response must include both a numerical setup and the calculated result.
What is 75 g/mole
200
2NaHCO3(s) + heat → Na2CO3(s) + H2O(g) + CO2(g) Determine the total mass of washing soda produced if 3360. kilograms of NaHCO3 reacts completely to produce 360. kilograms of H2O and 880. kilograms of CO2.
What is 2120 kg
200

Which process is a chemical change?

(1) condensation of H2O(g)

(2) synthesis of MgO(s)

(3) evaporation of  C2H5OH(l)

(4) sublimation of CO2(s)

(2) synthesis of MgO(s)

300

How many electrons are shared in a triple bond between two atoms?

 (1)  6  (2)  2  (3)  3  (4) 4

(1) 6
300
Identify one physical property of copper that makes it a good choice for uses that are not related to electrical conductivity.
What is shiny, conducts heat, hard metal
300
2NaHCO3(s) + heat → Na2CO3(s) + H2O(g) + CO2(g) Identify the type of chemical reaction represented by the equation.
What is decomposition
300
Which formula represents a polar molecule? (1) H2 (3) CO2 (2) H2O (4) CCl4
What is water
300

Which property is determined by the structure, arrangement, and interactions of the molecules of a substance at a given temperature and pressure?

(1) atomic radius     (3) formula mass

(2) half-life              (4) physical state

(4) physical state

400

Krypton atoms in the ground state tend  not to bond with other atoms because their

(1) second electron shell contains eight electrons

(2) third electron shell contains eighteen electrons

(3) innermost electron shell contains two electrons

(4) outermost electron shell contains eight electrons

(4) outermost electron shell contains eight electrons

400

Two sources of copper are cuprite, which has the IUPAC name copper(I) oxide, and malachite, which has the formula Cu2CO3(OH)2. Copper is used in home wiring and electric motors because it has good electrical conductivity. Determine the oxidation number of oxygen in the carbonate ion found in malachite.

What is -2

400
2NaHCO3(s) + heat → Na2CO3(s) + H2O(g) + CO2(g) State evidence that indicates the entropy of the products is greater than the entropy of the reactant.
What is phase change from solid to gas and 1 reactant to several products (increase in disorder)
400
Two categories of compounds are
What is ionic and covalent or molecular
400
Compare the boiling point of the solution at standard pressure to the boiling point of water at standard pressure.
What is boiling point of a solution is always higher than that of water (and the melting point is always lower)