Fusion ans Fission
Also called radioactive decay.
Fission
What is always the product of combustion?
CO2+H2O2
What happens during decomposition?
Elements split apart
What is the half-life of carbon-14?
5,730
What is flammability?
the ability to burn
________ does not produce radioactive waste.
Fusion
How do you determine the product of single replacement?
replace the same charged elements
What happens during synthesis?
Elements join together
Where is carbon dating most frequently used?
Archeological sites
What determines chemical properties?
their ability to react with other substances
What is a source of energy in the core of EARTH?
Fission
How do you determine the product of double replacement?
Switch the positive ions
What happens during double replacement?
elements trade two places
If there is 12.5% carbon-14 left, how old is it?
17,190
What is an example of physical changes?
change in size, shape, or color
What is a source of energy in the sun?
Fusion
___?__ H2O -------> ?
__1__ H2O -----> _1H2+1O2_
What is the general setup of single replacement?
AB+C----> AC+B
Who proposed carbon-dating?
Willard Libby in 1946
What is evidence of a chemical change?
When a substance is impossible to reverse
______ is a source for all external weather events.
Fusion
__?__ HBr+_?__Fe ---> ?
2HBr+1Fe-----> 1FeBr2+2H
What are the 5 types of reactions?
Sythesis
Combustion
Single replacement
Double replacement
Decomposition
How can you find how much has decayed?
Subtract the number given from the original amount
What determines physical properties?
the use of the 5 senses