Flashcards
Compounds and Formulas and energy changes
Cards in this deck (10)
- 1what does an exothermic reaction do?releases heat energy into the surroundings, causing temp to increase
- 2what do endothermic reactions do?absorb thermal energy causing surrounding temp to decrease
- 3give examples of an exothermic reactioncombustion, respiration, neutralization of acids with alkalis, reaction of metals with acids.
- 4give examples of endothermic reactionsthermal decomposition, photosynthesis, some types of electrolysis
- 5what is a compound?a substance formed when 2 or more atoms chemically bond
- 6what are the formulas for: carbon dioxide carbon monoxide water methaneCO2
CO
H2O
CH4 - 7what is the formula magnesium chloride?mg(2+) + Cl(-) = MgCl2
- 8what is a synthesis reaction?when a compound is formed from 2 simpler reactants
- 9give the symbol equation for magnesium+oxygen=magnesium oxide2Mg(2+) + O2(-)= 2MgO
- 10what is a decomposition?a reaction where a compound breaks down into 2 or more simpler products (usually requires energy- light, electrolysis/heat, thermal decomposition)
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- Flashcards on Compounds and Formulas and energy changes, created by ashley.amber on 30/05/2013.
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- ashley.amber
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