Equations 4 All
What are the three basic kinds of chemical reactions?
Decomposition
Formation
Combustion
Avagrado's number (6.02x1023) represents what?
how many atoms are in a sample of an elements when that sample has the same mass in grams as the element's mass in atomic mass unit.
What is an acid?
A molecule that donates protons or H+ ions.
What is a solute?
Why do we add salt to roadways in the winter?
The solution of water and salt has a lower freezing point. This is known as freezing point depression.
2H2) ----> 2(H2) + O2 is an example of what kind of reaction?
Decomposition reaction
What is molar mass?
The mass of one mole of a given compound.
What is a base?
A molecule that accepts protons or H+ ions.
What is a solvent?
The substance in which we are dissolving the solute.
Why is pop stored in pressurized cans?
2H2 + O2 ------> 2H2O is an example of what kind of chemical reaction?
Formation
What is a coefficient?
The big number on the left of each substance in a chemical equation.
What is dilution?
Adding water to a solution to decrease the concentration.
What is a solution?
When the solute and solvent are mixed together, they are called a solution.
Why do cars have a catalytic converter?
To turn CO into CO2
What gas added to the reactants side of a chemical equation that is a combustion reaction?
O(2).
Using a periodic table... how many moles are in 19 grams of Fluorine?
1 mole
What is an amphiprotic compound?
What is an exothermic process?
A process that releases heat.
Why should you worry if you see an excessively sooty fireplace?
The airflow around the fireplace must be poor, so it is using up all of the oxygen, producing an abundance of Carbon. An incomplete combustion has occured.
What are the two products of a combustion chemical reaction?
CO(2) and H(2)O. Otherwise known as carbon dioxide and water.
What is a limiting reactant?
the reactant in the chemical equation that runs out before the other one.
Molarity is a concentration unit that tells us what?
how many moles of a substance are in a liter of solution.
M= # of moles
__________
# of Liters
What is an endothermic process?
A process that absorbs heat.
The products of acid-base reactions are almost always what?
Salt and Water.