Atomic Theory
Atomic Structure
Ions/Isotopes
Periodic Table
Trends
100

Who developed the first atomic theory and what did he call atoms?

Democritus, atomos

100

Draw a picture of any atom, showing the three subatomic particles in the correct locations

100

What is a cation?

a positive ion

100

What are the rows and columns in the periodic table called?

Columns: groups or families

Rows: periods

100

What element has the highest ionization energy?

Helium

200

Who discovered electrons?

JJ Thompson

200

Which subatomic particle is the heaviest and which is the lightest?

Heaviest - neutron, proton

Lightest - electron

200

Give me an example of a negative ion

Any nonmetal ion

200

Elements that have the same properties can be found in the same _____ on the periodic table.

column or group

200

List the elements in order of increasing atomic radius:


Li, Ge, C

C, Li, Ge

300

Who discovered neutrons?

Chadwick

300

What are the charges on each subatomic particle:

Protons

Electrons

Neutrons

Protons - Positive

Electrons - Negative

Neutrons - Neutral

300

What charge does Mg get as an ion?

2+

300

Which elements from this list have similar properties:

Be, V, Ge, Ba

Be & Ba

300

Which element has the least metallic character?

Helium

400

Who discovered the nucleus?

Rutherford

400

what number do we use to find the number of protons in an element?

atomic number

400

What is are isotopes?

elements with the same number of protons but different number of neutrons

400

How many valence electrons do the halogens have?

7

400

Which element has the lowest electron affinity?

Francium

500

What is our modern atomic theory called?

Electron Cloud Model

500

where is the bulk of an atom's mass located?

nucleus

500

How many protons, neutrons, and electrons are in Calcium-39?

P: 20

N: 19

E: 20

500

What determines which group an element is in?

The number of valence electrons

500

Which three trends all follow the same arrows/pattern?

ionization energy, electron affinity, electronegativity

600

What happened in the gold foil experiment and what discovery did it lead to?

alpha particle beam was sent to gold foil, most passed through but some reflected off. led to nucleus discovery

600

how do we determine number of neutrons in an element?

Mass # - atomic #

600

How many protons, neutrons, and electrons are in Lead-210 3+?

P: 82

N: 128

E: 79

600

What are the alkaline earth metals?

Be, Mg, Ca, Sr, Ba, Ra

600

Which is larger: Tungsten or Lead?

Tungsten

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