A chemical equation describes what happens in a chemical ...
|term |definition or information |examples |
|chemical equation |method of writing what happens in a chemical reaction |2H2 (g)+ O2 (g) → 2H2O (l) + energy |
| |(g) for gaseous | |
| |(s) for solids | |
| |(l) for liquids | |
| |(aq) solution in water | |
| |endothermic---absorb heat energy | |
| |exothermic---release heat energy | |
|reactants |substances which enter into a reaction |Photosynthesis |
| |before the arrow |6CO2 + 6H2O + energy →C6H12O6 + 6O2 |
| | |reactants---6CO2 + 6H2O |
|products |substances which are formed or created by the reaction |Cellular Respiration |
| |after the arrow |C6H12O6 + 6O2 → 6CO2 + 6H2O + energy |
| | |products---6CO2 + 6H2O + energy |
|subscript |number that tells how many atoms of an element are in a unit of the |H2O |
| |compound |2 hydrogen atoms and 1 oxygen atom |
| |cannot change subscripts | |
|coefficient |number preceding the compound |2H2 + O2 → 2H2O + energy |
| |full size | |
| |multiplied throughout the formula to which it is attached | |
| | |2 in front of 2H2 and 2H2O are coefficients |
|ratio |places coefficients in order (left to right) using a colon to separate |Photosynthesis |
| | |6CO2 + 6H2O + energy →_C6H12O6 + 6O2 |
| | |Ratio---6:6:1:6 |
|Law of Conservation |by Antoine Lavoisier |start and end with same mass |
|of Mass |matter cannot be created or destroyed |must be balanced |
|(matter) | | |
| | | |
| | | |
| | | |
| | | |
| | | |
|Type of Chemical |Definition or information |examples |
|Reactions | | |
|synthesis reaction |two or more simple substances combine to form|[pic] |
| |a more complex substance |reactant + reactant ( product |
| |Two or more reactants yielding one product |A silver spoon tarnishes. The silver reacts with sulfur in the air to make silver |
| | |sulfide, the black material we call tarnish. |
| | |2 Ag + S [pic] Ag2S |
|decomposition reactions|One reactant yields 2 or more products. |[pic] |
| |synthesis and decomposition reactions are |reactant → product + product |
| |opposites. |Glucose (simple sugar) ferments to ethyl alcohol and carbon dioxide. The sugar in grapes |
| | |or from grain ferments with yeast to make the alcohol and carbon dioxide. The carbon |
| | |dioxide is the gas that bubbles out of beer or champagne. |
| | | |
| | |C6H12O6 (glucose) [pic]2C2H5OH (ethyl alcohol) + 2CO2 |
|single replacement |a single uncombined element replaces another |[pic] |
|reaction |in a compound |reactant + reactant ( product + product |
|(single displacement) |Two reactants yield two products |Silver nitrate solution has a piece of copper placed into it. The solution begins to turn|
| | |blue and the copper seems to disappear. Instead, a silvery-white material appears. |
| | |2 AgNO3 + Cu [pic]Cu(NO3)2 + 2 Ag |
|double replacement |Parts of two compounds switch places to form |[pic] |
|reaction |two new compounds |reactant + reactant → product + product |
|(double displacement) |Two reactants yield two products. |Hydrochloric acid and sodium hydroxide (acid and base) neutralize each other to make |
| | |water and a salt. |
| | |HCl + NaOH [pic]HOH + NaCl |
|Familiar Name |Chemical Name |Formula |
|Lye |Sodium hydroxide |NaOH |
|Milk of Magnesia |Magnesium hydroxide |Mg(OH)2 |
|Ammonia |Ammonia |NH3 |
|Stomach acid or gastric juice |Hydrochloric acid |HCl |
|Type of sugar (body/carbohydrates) |Glucose |C6H12O6 |
|Marsh gas |Methane |CH4 |
|Carbonic acid gas |Carbon Dioxide |CO2 |
|Nitrogen gas |Nitrogen gas |N2 |
|Oxygen gas |Oxygen gas |O2 |
|Table Salt |Sodium chloride |NaCl |
|Water | |H2O |
|Ozone |Ozone |O3 |
................
................
In order to avoid copyright disputes, this page is only a partial summary.
To fulfill the demand for quickly locating and searching documents.
It is intelligent file search solution for home and business.
Related searches
- what happens in municipal court
- what happens when a cd matures
- what happens if a girl takes viagra
- what happens when a car lease ends
- what happens when a woman takes viagra
- what happens in superior court
- what happens after a stroke
- what happens in traffic court
- what happens during a myocardial infarction
- what happens when a stock splits
- what happens during a stress test
- what happens before a heart attack