Open Closed and Isolated Systems

An Interactive Quiz on Chemistry by: Cameron Carranza

Thermo-chemistry

Thermo-chemistry is the study of heat energy which is associated with chemical reactions and/or phase changes such as melting and boiling

Multiple Choice

The study of heat energy which is associated with chemical reactions and/or phase changes such as melting and boiling

• thermo-dynamcis

• Thermo-chemistry

• exothermic reaction

• thermo-equilibrium

Multiple Select

What are the 3 basic laws/rules of thermo-Chemistry?

• The law of conservation of energy

• Matter can't be created nor destroyed

• The law of conservation of mass

• Hess's Law

​3 Basic Laws

The law of conservation of energy states that the total energy of a system is conserved. The law of conservation of mass states that the total mass of a system is conserved. Hess’s law states that the heat of reaction is independent of the path taken from the reactants to the products.

Multiple Choice

What is an open system?

• a type of thermodynamic system where the energy and matter are often exchanged with its surrounding.

• a thermodynamic system that exchanges neither energy nor matter with its surroundings.

• a system that is not in contact with any other system.

• a system that exchanges an infinite amount of matter and energy

​​What makes an open system?

What makes an open system is that it is a system that can freely exchange and energy with it's surroundings.This makes it different than a closed an isolated system, as it is open to exchanges and not limited.

Multiple Choice

A system that is not in contact with any other system

• A closed system

• An isolated system

• An open system

• Bond Energy

The answer is a closed system rather than an isolated system because as it is in its name, it is closed off from any exchanges with other systems even if they make contact.

Multiple Choice

What is the reaction called that absorbs heat?

• Chemical Reaction

• Exothermic Reaction

• Endothermic Reaction

• Physical Reaction

Multiple Choice

What is an Exothermic Reaction?

• A reaction that releases energy in the form of heat

• A reaction that attracts energy

• A reaction that absorbs heat

• A reaction that deflects heat

Multiple Choice

Which one is a thermo-chemistry equation?

• Fuel + O₂ → CO₂ + H₂O

• C6H12O6 (aq) 2C2H5OH(aq) + 2CO2(g)

• 2H2(g)+O2(g)→2H2(l)+571.6kJ

• K.E. = 1/2 m v²

C is the correct answer because we are involving the heat of decomposition of water, which leaves a temperature change in the water to occur which then leads to gas.

Multiple Select

Sodium hydrogen carbonate, also called baking soda, decomposes when you bake muffins. What is this reaction called?

• Physical Reaction

• Thermal Reaction

• Endothermic Reaction

• Exothermic Reaction

This reaction would be considered an endothermic and thermal reaction. This would be a thermal reaction because thermal breakdown reactions are those chemical reactions that disintegrate or decompose when heated and produce a variety of products. This would be considered an endothermic reaction as well because it involves the absorption of heat to breakdown the baking soda that make the muffins rise.

Multiple Select

This is the heat that is released or absorbed when one mole of a substance is formed from its component elements in their standard states

• The Heat of Neutralization

• Enthalpy of Formation

• The Heat of Solution

• The Heat of Formation