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science molecules

vocab and info

QuestionAnswer
proton is positive
nuetron is nuetral
electron is negative
you find the valence electron in the group number
1A +1
2A +2
3A +3
5A -3
6A -2
7A -1
ionic compound metal and nonmetal react
metalic metals react
chemical change change that occurs when one or more substances change into a different substance
temperature measure of hot/cold and measure of kinetic energy of the particles
thermal expansion increase in size do to heat increase in the substance
absolute zero temp at which molecular energy/movement is a minimum
precipitate solid produced as a result of a chemical reaction
chemical formula combo of chemical symbols and numbers represent substance
chemical equation representation of chemical reaction using symbols to show relation between reactants and products
reactant substance or molecule that participates in chemical reaction
product result of chemcial reaction
synthesis reaction in which two or more products yield a single product
synthesis also known as composition or combonation
decomposition reaction 1 reactant breaks into 2 or more products
combustion 1 or more reactants combine with oxygen releasing heat or light
single replacement 1 element replaces a similar element in a compound
single replacement also known as displacement
double replacement reaction that interchanges 2 ions from two different compounds AB+CD AD+CB
cation positive charge
anion negative charge
exothermic reaction chemical reaction in which heat is released
endothermic reaction a chemcial reaction that requires heat
law of conservation of energy energy can't be created nor destroyed
activation energy minimum amount of energy required to start a chemical reaction
inhibitor substance that slows or stops chemical reaction
catalyst substance that changes the rate of reaction w/o being used up or changing very much
rate of reaction speed at which new particles form
Created by: numnum
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