symbols
classifying reactions
chemical equations
energy
vocabulary
100
What are the numbers called that precede symbols and formulas in a chemical equation?
coefficients
100
What type of reaction is it when one element replaces another in a chemical reaction?
single replacement
100
What does it mean to balance a chemical equation?
The same number of atoms on each side!
100
What type of reaction releases heat?
exothermic
100
What is a catalyst?
When a substance speeds up a chemical reaction without being permanently changed.
200
How are symbols represented in a chemical equation?
With a capital letter OR a capital letter WITH a lower case letter..example: O for oxygen and Cl for chlorine
200
What type of reaction forms when two or more compounds combine to form another substance?
synthesis reaction
200
What are the substances on the left side of the equation?
reactants
200
What type of reaction absorbs heat?
endothermic
200
What is breaking down substances into simpler substances?
synthesis reaction
300
In a chemical equation, how is the arrow read?
As "forms" or "produces"
300
What type of reaction breaks down into two or more substances?
decomposition rection
300
What are the substances on the right side of the equation?
Products
300
What type of reaction gives off heat?
exothermic
300
What are substances that prevent or slow down chemical reactions?
inhibitors
400
What does the sybol "g" represent when shown in a chemical equation formula?
"g" for gas
400
What type of reaction produces a precipitate?
double displacement reaction
400
In a chemical equation, what does the symbol "aq" stand for?
dissolved in water
400
What is activation energy?
the minimal energy required to produce a chemical reaction
400
What is a precipitate?
an insoluble compound that forms during a chemical reaction..looks like crystals
500
What symbol does the "l" represent in a chemical equation formula?
"l" for liquid
500
What type of reaction produces heat and light and shows "burning" of a substance?
combustion reaction
500
What type of reaction requires heat (energy) to be added?
endothermic
500
What type reaction(s) gives off heat and light?
exergonic, exothermic
500
What force holds two atoms together?
chemical bond
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