Chapter 3 Flashcards
What is a chemical bond.
This is the interaction of electrons between atoms.
What are the types of chemical bonds.
Ionic bonds, covalent bond, polar covalent, hydrogen bonds.
What is an Ionic bond.
electrons being transferred from one to another.
What is a covalent bond.
This is when two atoms share electrons forming molecules.
What is a polar covalent bond.
A type of covalent bond where electrons are not shared equally.
What allows water to have its unusual properties.
The polar covalent bond. and the hydrogen bonds.
What are the substances that can dissolve in water.
Substances with Ionic bonds and substances with polar covalent bonds.
What are hydrophillic substances
Substances that dissolve in water, meaning ionic or polar covalent bonds.
What are hydrophobic substances.
Substances that don’t mix or dissolve in water.
How many bonds does oxygen have.
2 bonds
How many bonds does Hydrogen
1 bond
How many bonds does carbon
4 bonds
How many bonds does nitrogen
3 bonds
What determines the pH of a solution.
The amount of H+
What is a buffer
substance that absorbs or releases H+. Minimizes pH changes of solutions Example: carbonic acid.
