Back to AI Flashcard MakerChemistry /Chemical Reactions Flashcard Deck
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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| 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) |
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 |