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Energy of Chemical Reactions
Write that chemical formula!
Oh the Reactions you know
It's all about Balance
100
What is a process in which one or more substances change to make one or more new substances?
What is a chemical reaction?
100
This is part of all chemical reactions. It is needed to break chemical bonds in the reactants.
What is energy?
100
Sodium chloride
What is NaCl?
100
All molecules on the left side of the arrow in a chemical equation are called this.
What is reactants?
100
Whole numbers that are placed in front of the formulas in an equation to balance it.
What is coefficients?
200
Name the reactants that are produced during the chemical reaction of photosynthesis.
What are Carbon dioxide and water?
200
a chemical reaction in which energy is released
What is exothermic reaction?
200
Carbon hexafluoride
What is CF₆?
200
In which kind of chemical reaction do two or more substances combine to form one new compound?
What is a synthesis reaction?
200
These numbers should not be changed when balancing a reaction.
What is subscripts?
300
How many atoms are present in the formula CaCO3?
What is 5?
300
A log burns in a fireplace, giving off gases and leaving behind ash is what type of reaction
What is exothermic?
300
Lithium sulfide
What is Li₂S?
300
This type of chemical reaction 2KI +Cl₂ --> 2KCl + I₂
What is single replacement?
300
The coefficients used to balance this equation: K₂O (s) + H₂O (l) → KOH (aq)
What is 1,1,2?
400
This important scientific law states that during a chemical reaction, mass can never be created or destroyed.(this is why we must balance equations)
What is the law of conservation of mass?
400
Photosynthesis is an example of this type of reaction
What is Endothermic?
400
Trinitrogen nonoxide
What is N₃O₉?
400
Identify the type of reaction: 2KClO3 --> 2KCl + 3O2
What is decomposition?
400
The written and balanced chemical equation of the following: iron (III) chloride + calcium hydroxide --> iron (III) hydroxide + calcium chloride
What is FeCl3 + Ca(OH)2 --> Fe(OH)3 + CaCl2 ?
500
A shorthand way to use chemical symbols and numbers to represent a substance
What is a chemical formulas?
500
A reaction in which the total bond energy of the reactants is greater than the total bond energy of the products.
What is endothermic?
500
Monoarsenic disulfur heptachloric tribromide
What is AsS₂Cl₇Br₃
500
Identify the type of reaction: 2AlBr3 + 3K2SO4 --> 6KBr + Al(SO4)3
What is double replacement?
500
The missing reactant and coefficients to balance this equation: Bi(NO3)3 (aq) + _________ --> Bi2S3 (s) + HNO3 (aq)
What are 2, 3 --> 1, 6 and H2S?