Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
14 Cards in this Set
- Front
- Back
|
What happens in fission in chemistry? |
A covalent bond is broken |
|
|
What are the 2 types of bond fission? |
Homolytic and heterolytic fission |
|
|
What happens in homolytic fission? |
The bond breaks equally as one electron from the bonding pair goes to each atom to make 2 radicals |
|
|
What is a radical? |
A species with an unpaired electron |
|
|
What illustrates that electrons move? |
There are two half arrows, one from the bond to one atom and one from the bond to another |
|
|
What happens in heterolytic fission? |
The bond breaks unequally as both electrons from the bonding pair go to one atom. This makes a positive and negative ion |
|
|
What represents this movement of electrons? |
A full arrow |
|
|
What properties must the arrow have? |
It must be curved and must touch the bond (line) |
|
|
What are the 5 types of organic reactions? |
Addition reaction Substitution reaction Elimination reaction Oxidation reaction Condensation reaction |
|
|
What happens in an addition reaction? |
Two molecules react to make one product. One molecule adds across the double bond of an unsaturated molecule to make a saturated molecule. |
|
|
What happens in a substitution reaction? |
An atom/ group is replaced by another atom/ group. The number of products and reactants is the same |
|
|
What happens in elimination? |
An atom/ group is removed from a saturated molecule to make an unsaturated molecule |
|
|
What happens in an oxidation reaction? |
Oxygen is added and/or hydrogen is removed from a molecule |
|
|
What happens in a condensation reaction? |
A H2O molecule is lost when two molecules join together. |
