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# Kinetics and Equilibrium Questions - All Grades

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Grade 9 Kinetics and Equilibrium
According to Charles' Law, when the temperature of a gas increases, the
1. pressure of the gas decreases.
2. density of the gas increases.
3. volume of the gas increases.
4. volume of the gas decreases.
5. density of the gas decreases.
Grade 8 Kinetics and Equilibrium
The                        is the temperature at which a solid turns into a liquid at 0ºC.
1. the boiling point
2. the melting point
3. the condensation point
4. the freezing point
Grade 4 Kinetics and Equilibrium
What happens to the particles in water when the water is heated?
1. The particles move faster and closer.
2. The particles move slower and closer.
3. The particles move faster and farther apart.
4. The particles move slower and farther apart.
Grade 9 Kinetics and Equilibrium
Most matter                 when heated.
1. expands
2. contracts
3. solidifies
4. condenses
Grade 10 Kinetics and Equilibrium
In which of the following chemical reactions are the reactants completely converted into products?
1. $2KClO_3(s) -> 2KCl (s) + 3O_2(g) uarr$
2. $N_2(g) + 3H_2(g) hArr 2NH_3(g)$
3. $N_2O_4 (g) hArr 2NO_2(g)$
4. $N_2(g) + O_2(g) hArr 2NO(g)$
Grade 10 Kinetics and Equilibrium
Which statement correctly compares the rates of forward and reverse reactions at equilibrium?
1. The rates are constant
2. The rates are equal
3. The rate of the reverse reaction is less than that of the forward reaction
4. Both (a) and (b)
Grade 9 Kinetics and Equilibrium
Grade 5 Kinetics and Equilibrium
Grade 10 Kinetics and Equilibrium
Which of the following conditions is always required for equilibrium?
1. Concentrations to be zero
2. Concentrations of both products and reactants to be increasing
3. A closed system
4. An irreversible process
Grade 10 Kinetics and Equilibrium
Which statement correctly describes the concentrations of reactants and products at equilibrium?
1. The concentrations of reactants and products are equal
2. The concentrations of the reactants are greater
3. The concentrations of the products are greater
4. The concentrations are constant
Grade 10 Kinetics and Equilibrium
Grade 10 Kinetics and Equilibrium
Which statement correctly describes what occurs BEFORE equilibrium is established in a chemical reaction?
1. The concentrations of both the products and the reactants decrease
2. The concentrations of both the products and the reactants increase
3. The concentrations of the products increase, and the concentrations of the reactants decrease
4. The concentrations of the products decrease, and the concentrations of the reactants increase
Grade 10 Kinetics and Equilibrium
Which two processes are involved in the phase equilibrium between a solid and a liquid?
1. Melting and Evaporation
2. Evaporation and Condensation
3. Sublimation and Deposition
4. Melting and Freezing
Grade 10 Kinetics and Equilibrium
Which of the following kinds of changes can reach equilibrium?
1. Phase changes
2. Chemical reactions
3. Dissolving of a solute
4. All of the above
Grade 10 Kinetics and Equilibrium
Grade 5 Kinetics and Equilibrium
Grade 10 Kinetics and Equilibrium
Which set of values represents standard pressure and standard temperature?
1. 1 atm and 101.3 K
2. 1 kPa and 273 K
3. 101.3 kPa and 0°C
4. 101.3 atm and 273°C
Grade 10 Kinetics and Equilibrium
Grade 5 Kinetics and Equilibrium
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