Reaction Types
What type of reaction is seen below?
2 H2(g) + O2(g) → 2 H2O(g)
Synthesis
The type of reaction where bonds are broken and energy is absorbed.
Endothermic
What is the left side of a chemical reaction called?
Reactants
What was proven in the Temperature and Reactions Rate lab? The lab with the tablets.
Increasing temperature does increase reaction rate.
What type of reaction is seen below?
Cl2 + 2 NaBr → 2 NaCl + Br2
Single Replacement
What type of reaction is seen below?
2 KClO3 (s) → 2 KCl (s) + 3 O2 (g)
Decomposition
The type of reaction where energy is released and bonds are formed.
Exothermic
What side of the reaction releases energy?
Products
What type of reaction was the Elephant's Toothpaste, chemical or physical?
Chemical
What is kinetic energy?
Energy of movement or motion
What type of reaction is seen below?
Cu(s) + 2 AgNO3(aq) → 2 Ag(s) + Cu(NO3)2(aq)
Single Replacement
What is the Law of Conservation of Mass?
The Law of Conservation of Mass states that mass cannot be created nor destroyed.
What side of the reaction absorbs energy?
Reactants
Why wasn't the Law of Conservation of Mass followed in the lab where we made silver? What could have went wrong? Give two reasons.
What is the system and surroundings?
System: the reaction
Surroundings: everything else
What type of reaction is seen below?
HCl(aq)+NaOH(aq)→NaCl(aq)+H2O(l)
Double Replacement
The theory that states molecules must collide in order to react, and they must collide in the correct orientation and energy to react.
Collision Theory
Reactants have what type of energy?
Potential Energy
What are the two main factors that affect the rate of a reaction?
the amount of energy that the reactant particles collide with and how often they collide with each other
Why is activation energy required for some reactions?
Since reactants absorb energy to break bonds, some reactions require an input in energy so that the bonds in the reactants may break and can form products.
What type of reaction is seen below?
(NH4)2SO4(aq)+Ba(NO3)2(aq)→2NH4NO3(aq)+BaSO4(s)
Precipitate
The input of energy required for reactions to take place.
Activation Energy
Potential energy is transformed into what type of energy?
Kinetic Energy
Explain why increasing temperature causing reaction rates to also increase.
Increasing temperature allows particles to move faster causing them to collide more frequently, because they are colliding more frequently, the reaction rate is faster.
Describe the energy of a reaction from start to finish.
Discuss;
- absorbing energy
- releasing energy
- potential energy
To break the bonds require energy. As those bonds broke, the atoms moved around, carrying the potential energy given to them when the bonds were broken. When atoms came into contact with an element they could not bond with, the energy was released as the bonds formed.