Chapter 2 Flashcards
(28 cards)
Double bond
Sharing 2 pairs of electrons
Nonpolar molecule
A molecule with no charged regions
Polar molecule
Molecule with a slightly positive region and a slightly negative region
Hydrogen bond
Attraction between a slightly positive hydrogen atom and a slightly negative atom
Cohesion
The attraction or sticking together of molecules of the same substance
Adhesion
The attraction or sticking together of different molecules of different substances
Solution
Mixture of 2 or more substances that is the same throughout
Solvent
Dissolving agent
Solute
Substance that is dissolved
Concentration
The amount of solute dissolved in certain amount of solvent
Acid
A compound that releases a hydrogen ion when it dissolves in water
Base
Compound that accepts hydrogen ions and removes them from a solution when it dissolves in water
Ph - potential of hydrogen
Measurement of acidity
Matter
Anything that occupies a space and has a mass
Atom
The smallest basic unit of matter
Element
A substance composed of one particular type of atom and it can’t be broken down into simpler substance by ordinary reactions
Neutrons
Particles with no charge
Protons
Positively charged particles in an atom
Electrons
Negatively charged particles in an atom
Valence shell
Outermost energy level
Compound
A substance made of atoms of different elements bonded together in a certain ratio
Ion
An atom that had gained or lost 1 or more electrons
Cation
Positive ion
Anion
Negative ion
