Question | Answer |
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 |