Create an account
What are the five types of reactions?
synthesis, decomposition, single replacement, double replacement, and combustion
What does (s) stand for?
a designated reaction or product in the solid state; placed after the formula
What does a coefficient indicate?
the relative amounts of a molecule or compound involved in a chemical reaction
What is the balanced equation and type of reaction to the following equation:
Hydrogen gas reacts with Bromine gas to produce Hydrogen bromide gas ?
H2 + Br2 --> 2HBr
What is the the balanced equation and identify the type of chemical reaction of the following equation:
Aluminum oxide (s) decomposes when electricity is passed through it ?
2Al2O3 --> 4Al + 3O2
What is the balanced equation to the following rxn:
P4 (s) + Br2 (l) --> PBr5 (s) ?
P4 + 10Br2 --> 4Br5
What are the 6 signs to a chemical change?
color change, heat-energy released, odor, bubbling of gas, absorption of energy, and solid precipitation
Which reaction does not occur?
a) 2HF + Cl2 --> F2 +2HCL
b) 2Na + ZnF2 --> 2NaF + Zn
c) Fe +CuCl2 --> FeCl2 + Cu
d) 2HCl + Mg --> MgCl2 +H2
a) 2HF + Cl2 --> F2 + 2HCl
According to the law of conservation of mass, if two atoms of hydrogen are used as a reactant, how many atoms of hydrogen must be a part of the product?
In the equation 2Al (s) + 3FE(NO3)2 (aq) --> 3Fe (s) + 2Al(NO3)3 (aq), iron has been replaced by...?
What is the formula equation for the formation of carbon dioxide from carbon and oxygen?
C + O2 --> CO2
When a slightly soluble solid compound is produced in a double-replacement reaction, a __________ is formed.
The reaction Pb(NO3)2 (aq) + 2KI (aq) -->PbI2 (s) + 2KNO3 (aq) is a ...?
A chemical reaction has not occurred if the products have...?
the same chemical properties as the reactants
A substance that speeds up a chemical reaction without undergoing a permanent change itself is...?
What happens when calcium metal is added to a solution of magnesium chloride?
calcium chloride forms
In what kind of reaction does one element replace a similar element in a compound?
single replacement reaction
What do combustion reactions involve?
the reaction of a substance with oxygen that usually produces heat & light
What must happen for a reaction to proceed?
reactants' bonds must break, and bonds must reform to make products
What is the difference between the energy of reactants and products?
the total heat or energy of the reaction
What is the point at which all bonds have been broken and products begin to reform?
What affect do catalysts have on the activation energy of a reaction?
it lowers the activation energy
On an energy diagram, how do you know if the reaction is exothermic?
the energy level at the end of the reaction is lower than the energy level at the beginning of the reaction
On an energy diagram how do you know if the reaction in endothermic?
the energy level at the end of the reaction is higher than the energy level at the beginning of the reaction
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together