Atomic Structure And Bonding Flashcards
What has a mass of 0?
Electrons
What is the same as the atomic number?
The number of protons
The mass of an atom is what?
The number of protons and neutrons added together
What is covalent bonding?
The sharing of electrons between two non metal atoms
What happens when atoms are joined by covalent bonding?
They form a molecule
What charge do metal and non metal ions have?
Metal ions have a positive charge and non metal ions have a negative charge
What changes when an atom becomes an ion?
The number of electrons
What happens if an atom gives an electron away?
It has a positive charge
If an element takes an electron in does it have a negative or positive charge?
Negative
How does an ion form?
An ion forms when an atom gains or looses electrons to become stable
What is ionic bonding?
When positive metal ions are attracted to negative non metal ions and are locked together
What is an isotope?
An isotope is a different kind of atom of the same element
What is the same in an isotope of the same element?
The atomic number
What is different in an isotope of the same element?
The number of neutrons
What elements are liquid at room temperature
Bromine and Mercury
