Unit 1 Matter, Chemical Trends, And Chemica Bonding Flashcards
What is an anion
A negative ion that forms when a neutral atom gains an electron
What is a cation ?
A positive ion that forms when a neutral atom looses an electron
What is an atomic number?
The number of protons in nucleus which determines place in periodic table
What is atomic radius?
Distance from nucleus to outer boundary of electron cloud
What are the trends of atomic radius?
Increases as you go down a column because more energy levels
Decreases left to right because the particles of the atom gain stronger attraction
What is the average atomic mass?
Average mass of all isotopes in an element
What is a covalent bond?
When a non-metal shares a pair of electrons with another non-metal atom
What is electron affinity?
Ability of an atom to accept an electron to become anion
What trends of electron affinity?
Increases from bottom to top in a column
Increases from left to right in a period
What is a hydrate?
Water molecule locked with crystal lattice in ionic compound
What is an ionic bond?
An ionic bond is when a metal atom loses electros to a non-metal
What is ionization energy?
The energy that is needed to remove an electron from an atom
