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Chemical Reactions Flashcard Deck

Chemistry40 CardsCreated 4 months ago

This deck covers key concepts and definitions related to chemical reactions, including types of reactions, balancing equations, and the symbols used in chemical equations.

A chemical reaction can be concisely represented by a chemical equation. The substances that undergo a chemical change are the

reactants
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Key Terms

Term
Definition
A chemical reaction can be concisely represented by a chemical equation. The substances that undergo a chemical change are the
reactants
The new substances formed in a chemical reaction are the
products
In accordance with the law of conservation of -----, a chemical equation must be balanced.
mass
When balancing an equation, you place ------ in front of reactants and products so that the same number of atoms of each ------- are on each side of the equation.
coefficients, element
An equation must never be balanced by changing the ------ in the chemical formula of a substance
subscripts
The symbol for a liquid is
(l)

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TermDefinition
A chemical reaction can be concisely represented by a chemical equation. The substances that undergo a chemical change are the
reactants
The new substances formed in a chemical reaction are the
products
In accordance with the law of conservation of -----, a chemical equation must be balanced.
mass
When balancing an equation, you place ------ in front of reactants and products so that the same number of atoms of each ------- are on each side of the equation.
coefficients, element
An equation must never be balanced by changing the ------ in the chemical formula of a substance
subscripts
The symbol for a liquid is
(l)
The symbol for a solid is
(s)
The symbol for a gas is
(g)
A substance dissolved in water is designated
(aq)
It is possible to ---- the products of some chemical reactions
predict
In a ------ -------, the reactants are two or more elements and/or compounds and there's always a single product.
synthesis
In a ------ -------, a single compound is broken down into two or more simpler substances
decomposition
In a -------- ------, the reactants and products are an element and a compound
single replacement reaction
The -------- can be used to predict whether most single-replacement reactions will take place
activity series
A ------ ------ reaction involves the exchange of ions between two compounds
double replacement
This reaction (double replacement) generally takes place between two ionic compounds in ------ solution.
aqueous
One of the reactants in a combustion reaction is
O2
The products of the complete combustion of a hydrocarbon are ---- and ----
CO2, H2O
In an equation, a substance is shown to be in the gaseous state by placing an upward-pointing arrow after its formula
false
Atoms are destroyed in a chemical reaction
false
A skeleton equation is not a balanced equation
true
In a decomposition reaction, there is a single reactant
true
The activity series of metals can be used to predict products in double replacement reactions
false
Carbon dioxide and water are the products of the combustion of hexane (C6H14)
true
A nonmetal can replace another nonmetal from a compound in a single-replacement reaction
true
One of the products of a double-replacement reaction is a gas that bubbles out of the mixture
false
A symbolic way of describing a chemical reaction
chemical equation
A chemical equation that does not indicate the amounts of substance involved
skeleton equation
Numbers used to balance a chemical equation
coefficients
An equation in which each side has the same number of atoms of each element
balanced equation
Substance that undergo chemical change
reactants
New substances formed in a chemical reaction
products
A reaction in which two or more substances combine to form a single substance
synthesis reaction
Reaction in which a single compound is broken down into two or more products
decomposition reaction
Reaction in which atoms of one element replace atoms of a second element in a compound
single replacement reaction
Reaction of a compound with oxygen to produce energy
combustion reaction
A list of metals in order of decreasing reactivity
activity series of metals
Bonds between atoms are broken and new bonds are formed
true
New atoms are formed as products
false
The final substances are called reactants
false