Basic Chemistry

Basic Chemistry - Atoms • Matter is any substance in the...

Info iconThis preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Atoms Matter is any substance in the universe that has mass and occupies space All matter is composed of extremely small particles called atoms Every atom has the same basic structure Core nucleus of protons and neutrons Orbiting cloud of electrons
Background image of page 2
e- determine the chemical behavior of atoms
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Atoms Atomic number Number of protons Atomic mass Number of protons and neutrons Element A substance that cannot be broken down by ordinary chemical means
Background image of page 4
Common Elements
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Energy is the ability to do work Electrons have energy due to their relative orbital position (potential energy) Electrons
Background image of page 6
Each electron shell has a specific # of orbitals Each orbital holds up to two electrons Electrons Atoms with incomplete electron orbitals are more reactive
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Electron Arrangement Bohr model Electrons circle the nucleus in specific orbits Each orbit has a different energy level Ground state is the most stable electron arrangement where the electrons are in energy levels as near as possible to the nucleus Energy absorbed by a ground state electron pushes it to an orbit farther from the nucleus into an excited state
Background image of page 8
Quantum Mechanics Assigns electrons to various atomic orbitals, 3- dimensional regions of space around the nucleus Maximum number of electrons per energy level = 2n 2 where n is the number of the energy level 1 st energy level, n=1, holds 2 electrons 2 x 1 2 = 2 2 nd energy level, n=2, holds 8 electrons 2 x 2 2 = 8 3 rd energy level, n=3, holds 18 electrons 2 x 3 2 = 18
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Valence Electrons Chemical behavior of an atom depends mostly on the number of electrons in its outermost shell (energy level), the valence electrons Atoms with the same number of electrons in their valence shells exhibit similar chemical behavior F and Cl both have 7 valence electrons and both
Background image of page 10
Image of page 11
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 33

Basic Chemistry - Atoms • Matter is any substance in the...

This preview shows document pages 1 - 11. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online