chemistry bundle 1 exam review

Democritus

First to think about atoms

John Dalton

Made the first atomic theory

JJ Thomson

Plum pudding model

Ernest Rutherford

Gold foil experiment

Goldstein

Discovered the proton

Chadwick

Discovered the neutron

Mendeleev

organized elements by atomic mass

Moseley

organized elements by atomic #. Made modern periodic table

What is the EMS in order from lowest to highest frequency

Radio, microwave, infrared, visible light, uv, x ray, gamma

What is the acronym from lowest to highest Ems energy

Rich men in very unusual xmas gifts

Order of visible light from least to most energy

Red orange yellow green blue indigo violet

What are the horizontal rows of the pd table

Periods

What are the vertical columns of the pd table

Groups

How do you find the # of dots on a lewis dot structure

Search for # of valence electrons

Ionization energy

Decreases going down, increases going right

Electronegativity

Decreases going down, increases to the right

Atomic radius

Increases going down, decreases going right

When calculating for atomic mass, does the % turn into a decimal?

Yes

What is the unit of measurement for atomic mass

Amu (atomic mass unit)

What is the unit of measurement for frequency

Hz (hertz)

Unit of measurement for wavelength

M (meter)

Unit of measurement for speed of light

m/s (meters per second)