Chem Solutions Review

What kind of equilibrium does the reaction below show?

H_2(g) +I_2(g) ↔ 2HI_(g)

• Heterogeneous equilibrium, all the reactants and products are in the same physical state.

• Homogeneous equilibrium, all the reactants and products are in the same physical state.

• Heterogeneous equilibrium, the reactants and products are present in more than one physical state

• Homogeneous equilibrium, the reactants and products are present in more than one physical state

Tags

NGSS.HS-PS1-6

B represents

• Potential Energy of Products

• Potential Energy of Reactants

• Change in Enthalpy

• Activation Energy

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

A represents

• Potential Energy of Products

• Potential Energy of Reactants

• Change in Enthalpy

• Activation Energy

Tags

NGSS.HS-PS1-4

Which component of collision theory is represented in the image?

• Correct orientation of molecules

• molecules collide with sufficient energy

• Products become reactants

• Molecules form an activated complex

Is the following reaction endothermic or exothermic

• endothermic

• exothermic

Tags

NGSS.HS-PS1-4

Is the following reaction endothermic or exothermic

• endothermic

• exothermic

Tags

NGSS.HS-PS1-4

A temperature increase causes the particles ......

• to slow down

• move faster

• collide higher

• in the right order

Tags

NGSS.HS-PS1-5

How does a catalyst work in speeding up a reaction?

• By lowering the activation energy or reaction

• by giving them more energy

• by making them more available

Tags

NGSS.HS-PS1-5

dynamic equilibrium

• condition of continuous, random movement of particles but no overall change in concentration of materials
• the process by which one or more substances change to produce one or more different substances
• a condition where the reaction occurring in a system is completely halted and there exists no movement between the reactants and the products corresponding to the chemical reaction
• a substance that takes part in and undergoes change in a chemical reaction

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

forward reaction

• the substance that does the dissolving
• the reaction that forms products from reactants
• to produce
• the reaction that forms reactants from products