Atoms
This is a small particle that makes up most types of atoms on earth
What is an atom
Made up of only one kind of atom
an element
What are three big categories of elements?
Metals, nonmetals, and metalloids
These are found on the right side of the periodic table
What is metalloids and non metals
Atomic radii from top to bottom in the same group
Increasing
This is an uncharged particle in the nucleus of the atom.
What is a neutron
These are on the periodic table
elements
Sr is in the group called
alkaline earth metal
This is the number of protons in the nucleus of each atom of an element
What is the atomic number
Atomic radii left to right in the same period
Decreasing
These are atoms of the same element that have different numbers of neutrons.
isotopes
These are shiny, good conductors of heat and have luster
What is a metal
The last group starting with He is called
noble gases
This is the sum of the an atom's protons and neutrons
What is mass number
Ionization energy and electronegativity from top to bottom in the same group
decreasing
This is a positively charged particle in the nucleus of the atom
What is a proton
These are poor conductors of heat and electricity. They are dull in appearance
What is a non metal
Zn is a _________ metal
transition metal
This is the weighted average of mass of an element
What is atomic mass
Ionization energy and electronegativity from left to right in the same period
Increasing
This is a negatively charged subatomic particle
What is an electron
Elements that have characteristics of metals and non metals
What is a metalloid
Give an example of halogens
F, Cl, Br, or I
These are the elements at the bottom two separated rows
inner transition metal
Which one has a bigger radius? which one has a higher ionization energy and electronegativity? K and Br
K has a bigger radius, and Br has a higher ionization energy and electronegativity