WorksheetsPRACTICE TEST 3
Total questions: 14
Worksheet time: 14mins
What is a Lewis Dot Symbol?
It shows all of the particles in the atom.
Contains protons and neutrons
the number of valence electrons in an element
Contains protons and electrons
An atom in the ground state contains a total of 5 electrons, 5 protons, and 5 neutrons. Which Lewis dot diagram represents this atom?
According to the Octet Rule, atoms of elements react with each other in order to attain ____ electrons in their outermost energy level or shell.
2
6
8
10
How do can atoms complete the octet rule?
They lose or gain protons
They lose or gain neutrons
They lose or gain electrons in the outermost level
They lose of gain electrons from the innermost level
What is the general formula for tetrahedral?
AB4
AB3
AB5
AB6
The geometry of a molecule with 5 bonding pairs of electrons and 0 lone pairs of electrons, AB5
Tetrahedral
Trigonal Planar
Trigonal pyramidal
Trigonal bipyramidal
According to VSEPR theory, how many basic molecular geometries are there?
3
4
5
6
Which of the following statements is CORRECT for a reaction at an equilibrium?
The rate of forward and reverse reactions are equal.
The concentrations of product and reactant are equal.
The forward and reverse reactions will stop.
Always occur in an open system.
Which of the following is NOT the characteristic of a system in equilibrium?
The rate of forward reaction is equal to the rate of reverse reaction.
The concentrations of reactants and products remain constant.
The concentration of the reactants and concentration of the products are equal.
Reaction quotient, Q equals to the equilibrium constant, K.
Equilibria in which the substances are in the different phases are called
dynamic equilibrium.
equilibrium constant.
homogeneous equilibria.
heterogeneous equilibria.
Homogeneous equilibria refer to
chemical equilibrium in which all the reactants and products are in different phases.
chemical equilibrium in which all the reactants and products are in same phases.
chemical equilibrium in which all the rate of forward reaction is equal to the rate of reverse reaction.
chemical equilibrium in which all the rate of forward reaction is greater than the rate of reverse reaction.
Heterogeneous equilibria refer to
chemical equilibrium in which all the reactants and products are in different phases.
chemical equilibrium in which all the reactants and products are in same phases.
chemical equilibrium in which all the rate of forward reaction is equal to the rate of reverse reaction.
chemical equilibrium in which all the rate of forward reaction is greater than the rate of reverse reaction.
All the systems below are homogeneous equilibria EXCEPT
2PCl3 (g) + O2 (g) ⇌ 2POCl3 (g )
FeO (s) + CO (g ) ⇌ Fe(s) + CO2 (g )
Ag+ (aq) + Fe2+ (aq) ⇌ Ag (s) + Fe3+ (aq)
N2O4 (g) ⇌ 2NO2 (g)
What type of equilibria involved for the reaction below:
SOCl2(g) + H2O(g) ⇌ SO2(g) + 2HCl(g)
Homogeneous equilibria where all reactants and products are in same phase
Heterogeneous equilibria where all reactants and products are in same phase
Homogeneous equilibria where all reactants and products are in different phase
Heterogeneous equilibria where all reactants and products are in different phase
