Notes on subatomic particles
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Notes on Subatomic Particles. proton. neutron. There are 3 subatomic particles in an atom: 1. 2. 3. electron. nucleus. Electrons. (negative). Proton Neutron. (positive). (neutral). 1 amu (atomic mass unit). positive. nucleus. (p + ). neutral. nucleus. 1 amu. (n).

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Notes on Subatomic Particles

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Notes on subatomic particles

Notes on Subatomic Particles

proton

neutron

There are 3 subatomic particles in an atom:

1.

2.

3.

electron


Notes on subatomic particles

nucleus

Electrons

(negative)

Proton

Neutron

(positive)

(neutral)


Notes on subatomic particles

1 amu

(atomic mass unit)

positive

nucleus

(p+)

neutral

nucleus

1 amu

(n)

Zip around

nucleus in

shells

(e-)

negative

_1_ amu

1837


When using the periodic table to find subatomic particle information

When using the periodic table to find subatomic particle information…

Atomic mass #

symbol

A

Z

Atomic #

Atomic mass # :

  • Is a number in decimal form

  • When you round it, it tells you the mass of p+ + n + e-

x

Atomic # :

  • Tells the # of p+

  • Tells the # of e-

To find the # of neutrons:

Atomic mass # - atomic # = # neutrons


Atoms that aren t typical

Atoms that aren’t typical

  • ISOTOPE – atom with a number of neutrons that is higher or lower than what’s indicated on the periodic table (typically radioactive)

  • ION – atom with a number of electrons that is higher (anion) or lower (cation) than what’s indicated on the periodic table


Examples on subatomic particle worksheet

Examples on Subatomic Particle Worksheet:

23

sodium

11

11

12

11

11

91

Zr

zirconium

40

40

40

40

Cs

cesium

55

55

78

133

55


Notes on the periodic table

Notes on the Periodic Table

  • Periodic table created by Dimitri Mendeleev

He organized it by increasing mass

(doesn’t work…look at #27 and #28)

and by similar properties

  • NOW organized by increasing atomic number and by similar properties


Organization of the periodic table

Organization of the Periodic Table

Rows () – periods, shells, energy levels,

electron clouds

Columns (↕) – groups, families, # of valence

electrons

Left of Zig Zag Line - metals, cations (positive ions)

Zig Zag Line – metalloids, semi-metals, semiconductors

Right of ZigZag Line – non-metals, anions (negative ions)


Families of the periodic table

Families of the Periodic Table

  • Column 1 – Alkali Metals

  • Column 2 – Alkaline Earth Metals

  • Column 8 (18) – Nobel Gases

  • Column 7 (17) – Halogens

  • Column 6 (16) – Oxygen Family

* Column 5 (15) – Nitrogen Family

**Note: Only Down to Zig Zag line for Oxygen Family and Nitrogen Family!!


Families of the periodic table continued

Families of the Periodic Table continued…

Middle of the periodic table …

TRANSITION METALS

  • Coinage Family (Cu, Ag, Au)

  • Lanthanides (1st row on bottom)

  • Actinides (2nd row on bottom)


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