Atomic Structure
Isotopes
Ions
Periodic Table
Bohr Models
100
What are the three subatomic particles?
Protons, neutrons, electrons
100
What subatomic particle changes between isotopes?
Neutrons
100
What is an ion?
An atom with a positive or negative charge because it has gained or lost electrons
100
What does the atomic number tell you?
The number of protons.
100
How many electrons go in the first energy level?
2
200
Which subatomic particle has a positive charge?
Proton
200
How many neutrons are in an atom of chlorine-37 if chlorine has an atomic number of 17?
20 neutrons
200
What happens to an atom when it loses electrons?
It becomes positively charged.
200
What is a vertical column on the periodic table called?
A group or family.
200
What are electrons in the outermost energy level called?
Valence electrons
300
What particles make up the mass of an atom?
Protons and neutrons
300
An atom has 15 protons and 16 neutrons. What element is it and what is the mass number?
Phosphorous, mass number 31
300
An atom has 12 protons and 10 electrons. What is its charge?
+2
300
What is a horizontal row on the periodic table called?
A period.
300
Draw a Bohr model for an atom of magnesium?
400
An atom has 17 protons, 18 neutrons, and 17 electrons. What is its atomic number and mass number?
Atomic number: 17
Mass number: 35
400
An isotope of an element has 35 protons and 45 neutrons. What is both of it's isotope notations?
Bromine-80 and 80Br
400
An atom has 9 protons and 10 electrons. What is its charge, and did it gain or lose electrons?
-1; it gained one electron
400
An element has 6 valence electrons and is located in Period 3. Identify the element.
Sulfur
400
An atom has the Bohr model arrangement 2-8-8-1. What element is it?
Potassium
500
An unknown particle has a mass number of 39, 19 protons, and a +1 charge. Determine the number of neutrons and electrons.
20 neutrons and 18 electrons.
500
An element has two isotopes:
- 60% have a mass of 63 amu
- 40% have a mass of 65 amu
What is the average atomic mass?
63.8 amu
500
Which has more electrons: Na⁺ or F-?
They both have the same number: 10
500
Which group is noble gases?
Group 18
500
An atom has 3 occupied energy levels and 7 valence electrons. Identify the element and write its Bohr arrangement.
