Atomic Structure
Dalton's Atomic Theory or Modern Atomic Theory?
Protons, Neutrons, & Electrons
Periodic Table
Miscellaneous
100
This subatomic particle is neutral, or has no charge.
What is a neutron
100
The mass number represents the total mass of the nucleus (protons + neutrons)
What is modern atomic theory?
100
helium
p - 2, n - 2, e - 2
100

What is the Periodic Table?

The Periodic Table is a chart that shows all the different types of elements, arranged by how they are similar or different.

100

How does the modern atomic model differ from the Bohr model?

The modern atomic model says electrons move in regions of space called orbitals, not fixed paths like in the Bohr model.

200
The number of protons gives us this value, which is unique for each element and determines its identity.
What is the atomic number?
200
Atoms cannot be divided, created, or destroyed
What is Dalton's atomic theory?
200
Flourine
p - 9,n -10,e - 9
200

What are groups in the periodic table?

Vertical column, where elements have similar chemical properties.

200
987000000 in scientific notation & number of significant figures present
What is 9.87x10^8 & 3 sig figs?
300
These two subatomic particles must be equal in number in order to make the atom neutral.
What are electrons & protons?
300
Atoms of the same element are identical.
What is Dalton's atomic theory?
300
Phosphorus
p - 15, n - 16, e - 15
300

What is an element’s atomic number?

An element's atomic number is the number of protons in the nucleus of its atom, which determines the element's identity.

300
This is why the atomic mass listed on the periodic table is not a whole number.
What is because it is the weighted average of all of the masses of the isotopes of a given element?
400
The two sub-atomic particles that make up the nucleus.
What are protons & neutrons?
400
Atoms are the smallest unit that retain the properties of that matter
What is modern atomic theory?
400
Chlorine - 37
p - 17,n - 20,e - 17
400

How are elements arranged  in the Periodic Table?

Elements are elements arranged in the Periodic Table by increasing atomic number and grouped into periods (rows) and groups (columns) based on similar properties.

400
Atoms with the same number of protons and a different number of neutrons, such as carbon-12, carbon-13, and carbon-14 are called this.
What are isotopes?
500
This particle is 1/1837 the a mass of a proton
What is an electron?
500
In chemical reactions, atoms are combined, separated, or rearranged.
What is both (Dalton's & modern theory)?
500
These are outer-shell electrons
What are valence?
500

What is the difference between metals and nonmetals on the Periodic Table?

Metals are shiny, conductive, and malleable, while nonmetals are typically dull, poor conductors, and brittle in solid forms.

500
Calculate the average atomic mass for silicon based on the percent abundances of its naturally occurring isotopes: Si-28: 98% Si-29: 1.5% Si-30: 0.5%
What is 28.03
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