whos in paris

Description that doesn't use numbers

Descriptive form that does use #'s

the closeness of a set of measurements of the same quantity made in the same way

the closeness of measurements to the correct or accepted value of the quantity measured

meter (m)

V

Kelvin (K)

second (s)

kilogram (kg)

(g/cm3), (kg/l)

The amount of space an object takes up

the amount of matter in an object

How compact something is

Anything that has mass and takes up space

the force of gravity on an object

can be observed without changing the identity of the substance (mp,bp,fp,density)

Doesn't change what substance is (tear paper, break glass, change form, solid-liquid-gas)

Ability to undergo change (rust, corrode, burn, decompose)

changes into a new substance (burns, reacts, decomposes, rusts

same consistency through out

different consistency throughout

A pure substance made of only one kind of atom

substance made of atoms of 2 or more different elements joined by chemical bonds

Mass is not created or destroyed, only transformed.

• Elements are composed of extremely small particles called atoms.- All atoms of a given element are identical (same size, mass, and properties)- Atoms of 1 element are different from others-Atoms can physically mix or chemically combine only in whole number ratios

Gold foil experiment, discovered nucleus

discovered the electron, plum pudding model

Proposed 1st periodic table where elements were arranged according to Atomic Mass

# of protons, # of electrons (not in ion)

Number of protons and neutrons

protons + neutrons

Element with different electron number (2,3)

electrons in the outermost shell

2, 6, 10, 14

E-'s fill orbitals from the lowest Energy level 1st

suborbital hold at most 2 electrons with opposite spin

when e-'s occupy orbitals of equal energy, one electron enters each orbital until all the orbitals contain one electron with equal spin

Formed when one or more electrons are transferred from one atom to another

possible charges an atom of an element can have

A chemical bond formed when two atoms share electrons

gain or lose electrons to get a full outer shell of 8

a pair of electrons that is not involved in bonding

repulsion b/w valence e-'s causes them to move as far away from each other as possible

A charged group of covalently bonded atoms. (define and know them)

a covalent bond in which electrons are shared unequally

a covalent bond in which electrons are shared equally

the two weakest intermolecular attractions- dispersion interactions and dipole forces

the weakest of all molecular interactions, are caused by the motion of electrons

When a H is bonded to a very electronegative atom

occur when polar molecules are attracted to one another

A short, easy way to show a chemical reaction, using symbols.

A starting material in a chemical reaction (left side)

Ending materials in a chemical reaction (right side)

solid state

liquid state

gas state

aqueous, water

yields, produces

substance that speeds up the rate of a chemical reaction

6.02 x 10^23 (atoms to 1 number)

Sulfate

Carbonate

Chlorate

Nitrate

Phosphate

Acetate

Hydroxide

Ammonium