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Category 5
100
Balancing a chemical equation so that the same number of atoms of each element is found in both the reactants and the products illustrates this law.
What is the law of conservation of mass?
100
A shorthand method of identifying an element.
What is a chemical symbol?
100
The suffix "-ide" can be used in the names of _________ and _________ compounds.
What are covalent and ionic?
100
An advantage to _________ __________ is that they are understood worldwide.
What are chemical equations?
100
A chemical reaction in which energy is absorbed.
What is endothermic?
200
Ions in two compounds switch place.
What is a double-replacment reaction?
200
A shorthand notation for a compound or diatomic element using chemical symbol and numbers.
What is a chemical formula?
200
If the name of a compound contains the name of a metal and a nonmetal the compound is probably _____________.
What is ionic?
200
Seperates the formulas of the reactants from the formulas of the products.
What are yield signs?
200
A chemical reaction in which energy is released or removed.
What is exothermic?
300
Holding a lit match to paper is an example of ___________ ___________.
What is activation energy?
300
A _________ ____________ indicates the chemical makeup of a substance by showing how many of each kind of atom are present.
What is a chemical formula?
300
A shorthand description of a chemical reaction using chemical formulas and symbols.
What is a chemical equation?
300
A reaction in which two or more substances combine to form a single compound.
What is a synthesis reaction?
300
This reaction requires a continuous supply of energy.
What is an endothermic reaction?
400
The new substances in a ___________ _____________ have different physical and chemical properties from the original substance.
What is a chemical reaction?
400
The proper order of the first five prefixes used in chemical names.
What is mono-, di-, tri-, tetra-, and penta-?
400
The starting materials in a chemical reaction.
What are reactants?
400
A reaction in which a single compound breaks down to form two or more simpler substances.
What is decomposition?
400
A reaction that can continue to occur once it has begun.
What is an exothermic reaction?
500
Coal burning is an example of a ____________ __________.
What is a chemical reaction?
500
The names of ____________ compounds use prefixes.
What is covalent?
500
The substances formed in a chemical reaction.
What are products?
500
A reaction in which an element takes the place of another element that is part of a compound.
What is single-replacement reaction?
500
A substance that speeds up a reaction without being permanently changed.
What is a catalyst?
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