Atomic Structure
This subatomic particle has a positive charge and is found in the nucleus
What is a proton?
A pure substance made of only one type of atom.
What is an element?
This number tells you how many protons an atom has.
What is the atomic number?
An atom that has gained or lost electrons is called this.
What is an ion?
The mass number is equal to these two particles added together.
What is protons and neutrons?
This particle has no electrical charge.
What is a neutron?
Water (H₂O) is an example of this type of substance.
What is a compound?
This number equals the total number of protons and neutrons.
What is the mass number?
An atom that loses electrons becomes this type of ion.
What is a cation?
Calculate the neutrons in an atom with mass number 23 and atomic number 11.
What is 12 neutrons?
This subatomic particle moves around the outside of the nucleus?
What is an electron?
These are the two subatomic particles that are found in the nucleus
A neutral oxygen atom has 8 protons. How many electrons does it have?
What is 8 electrons?
An atom that gains electrons becomes this type of ion.
What is an anion?
Atoms with the same number of protons but different numbers of neutrons are called these.
What are isotopes?
This subatomic particle determines the identity of an element?
What is a proton?
A neutral magnesium atom has 12 protons. If it becomes Mg²⁺, how many electrons does it have?
What is 10 electrons?
An atom that has an atomic number of 17 has this many protons
What is 17 protons?
This part of an atom changes when an ion forms?
What are electrons?
An atom has 20 protons and 22 neutrons. What is its mass number?
What is 42?
The charge an atom receives if it gains one electron.
What is negative?
During alpha decay, how does the atom break down?
The atom loses 2 protons and 2 neutrons
How many electrons fit into shells 1, 2 and 3
What is 2, 8, 8?
Why is a sodium ion still considered sodium even when it has lost an electron?
Because protons determine what the element is, not the number of electrons
What are neutrons?