Important Vocabulary
Evidence of a Chemical Reaction
Balancing Equations
Types of Chemical Reactions
Surprise me
100
What is a chemical reaction?
A process that changes the structure of atoms to create a new substance out of themselves.
100
Chemical reactions typically give what kind of signals?
Visual
100
What does the Law of Conservation state that applies to balancing equations?
Matter cannot be created or destroyed in a chemical reaction
100
What are the five types of chemical reactions?
1 - Decomposition reactions 2 - Synthesis reactions 3 - Single-replacement reactions 4 - Double-replacement reactions 5 - Combustion reactions
100
What are coefficients?
The number measure of an amount of element shown by a number being placed in front of the element’s symbol.
200
What are reactants?
The substances that are placed into a chemical reaction that change forms to create the products.
200
Is water boiling a chemical reaction? Why or why not?
No, the water boiling is not forming a new substance it is still water. Since no new substance are formed the reaction cannot be a chemical reaction.
200
When you have an element with a subscript and coefficient in front of it, what do you do to find out how much of that element you have?
Multiply the coefficient and subscript
200
Which type of chemical reaction breaks a compound into parts?
Decomposition reaction
200
Which type of reaction is the activity series used for?
Single-replacement reactions
300
What is an ionic bond?
A bond that has the complete transfer of valence electrons occur, each will have their valence shell full.
300
Name one chemical reaction.
A bike rusting, hydrogen and oxygen forming water, etc.
300
Balance the equation: __ Fe + ___ Cl2 →___ FeCl3
2 Fe+3 Cl2 → 2 FeCl3
300
Which type of chemical reaction joins elements or compounds together?
Synthesis reaction
300
What are the reactants of a combustion reaction?
Oxygen and a hydrocarbon
400
What is a precipitate?
A substance that is created towards the bottom from a solution, it is a solid.
400
Name at least four clues of a chemical reaction occurring.
1 - Color change 2 - Precipitates being formed 3 - Heat being absorbed or created 4 - Bubbles forming
400
Balance the equation: __ C2H4 +__ O2 →__ CO2 + __ H2O
1 C2H4 +3 O2 → 2 CO2 +2 H2O
400
Which type of reaction has a single element replace an element in a compound within the reaction?
Single-replacement reaction
400
Balance the equation: S8 + F2 --> SF6
S8 + 24F2 --> 8SF6
500
What is an activity series?
A guide for predicting the products of metal displacement reactions.
500
Which of the following is NOT a chemical reaction? 1 - Glucose and oxygen combining to form water and carbon dioxide 2 - Hydrogen combing with oxygen to form water 3 - Ice melting into water 4 - Sodium metal and chlorine gas forming sodium chloride
3 - Ice melting into water
500
Balance the equation: __HSiCl3 + __H2O → __H10Si10O15 + __HCl
10 HSiCl3 +15 H2O → 1 H10Si10O15 + 30 HCl
500
What are always the products of combustion reactions?
Carbon dioxide and water
500
What type of reaction does this represent? H2SO4+2NaOH --> Na2SO4+2H2O
Double-replacement
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