Chemical Reactions Flashcards
(25 cards)
What is a chemical reaction
A change that results in the formation of one or more new substances
Example of a chemical equation Fe+S=?
FeS iron sulfate
What is iron sulfate
A compound
What is the law of conservation mass
The mass of the reactants is always equal to the mass of the products
What is rate of reaction
How quickly a reaction takes place
Factors that affect rates of reaction
Heat
Particle size
Concentration
Types of reactants
Catalyst
Magnesium+hydrochloric acid=
Magnesium chloride, hydrogen
How to test for hydrogen
Put a lighten splint up to the test tube and it will make a characteristic pop
Zinc +hydrochloric=
Zinc chloride, hydrogen
The greater the concentration the_______________ the rate of reaction
Faster
The higher the temperature the ______ and the _____the rate of reaction
Higher and faster
Why does the smaller the particle size mean faster reaction rate
Greater surface area in contact
Exothermic
Gives out heat. Product less than reactants
Endothermic
Takes in heat, product higher than reactants
How to make carbon
Calcium carbonate+ hydrochloric acid
How to test for cabron
A lit splint will go out when put to the test tube
How do you create oxygen
Manganese dioxide+hydrogen peroxide
How to test for oxygen
A glowing splint will relight
What is a catalyst example
Manganese dioxide
What experiment can use four out of 5 of things that increase the rate of reaction
Magnesium+hydrochloric acid=hydrogen
Example of ectothermic
Respiration and burning fossil fuels
Example of endothermic
Photosynthesis
What is an energy profile diagram
A graph that shows the change in energy of a chemical reaction
What is activation energy
The minimum amount of energy colliding particles need to have for a reaction to occur
