Chem unit 2

Adhesion

Attraction between two dissimilar phases

Cohesion

Attraction of molecules for other molecules of the same kind

Specific Heat

Require a greater change in energy to change temperature.

Surface Tension

Property of the surface of a liquid that allows it to resist external force due to molecules

Solubility

Maximum amount of solute that dissolves in a given amount of solvent

static electricity

Imbalance of electric charges

how does water react to static electricity

it shifts the water and moves it

goldilocks zone

perfect distance earth orbits water remains liquid

How do opposite charged molecules react to each other

opposites attract

How do similar molecules react to each other

they pull away

What does it mean when a substance becomes polar

When electrons are being shared unequally

How does the makeup of an atom affect the strength of attraction/repulsion

More of an atom leds to a stronger pull and attraction

What are 6 elements that make up macromolecules

Hydrogen, Oxygen, Nitrogen. Carbon, Phosphorus

Covalent

non metal atoms form attraction

Ionic

metal and nonmetal form an attraction

Valenece electrons

single electron or more on the outer shell of an atom

Period

row on periodic table horizontal

family/group

column on periodic table vertical

Atomic radius

increases down a group and decreases across a period

Metals

weak hold on electrons and freely move conduct electricity

Nonmetals

stronger hold and do not conduct electricity easy

Which atoms are negative in a covalent bond

Non metals

Which atoms are positive in a covalent bond

metals