Definitions
Fun Facts!
Atomic Structure
Chemical Families
Structures & Properties
100
The number of protons in one atom of a particular element.
What is Atomic Number
100
Elements are organized into a what kind of chart
What is the periodic table of elements?
100
The upper number of an element on the periodic table
What is the atomic number?
100
an electron in the outermost energy level of an atom
What is a valence electron?
100
__________ in the first energy level are pulled close to the nucleus.
What are electrons?
200
The attractive force that holds the nucleus together.
What is strong force?
200
The basic building block of each element
What is an atom?
200
The bottom number of an element on the periodic table
What is atomic mass?
200
a group of elements that have similar properties
What are chemical families?
200
Metals are very reactive because their electrons are _______ from the _____________.
What is: far, nucleus?
300
the number of protons plus the number of neutrons in one atom
What is atomic mass?
300
The smallest units of an element that retain the properties of the element.
What is the atom?
300
Property of matter that can be either positive, negative, or neutral
What is electrostatic charge?
300
All elements within the same chemical family react in similar ways because they have the same number of ______ ______.
What are valence electrons?
300
Electrons in the _________, _______________, or ________ levels are held __________ by the nucleus of an atom.
What is: second, third, higher, loosely?
400
the location of electrons surrounding the nucleus in the atom
What is electron energy level?
400
The atoms of all elements contain the same three particles:
What is protons, neutrons, and electrons?
400
Located in the nucleus of an atom
What is protons and neutrons?
400
Usually shiny, hard, and good conductors
What are metals?
400
The period of the periodic table that has only two elements in it
What is the first period?
500
A symbol in which dots represent valence electrons
What is electron dot diagram?
500
Where electrons are located
What is energy levels?
500
The charges of each part of an atom
What is electron=negative, proton=positive, neutron=neutron?
500
Properties of nonmetals
What is: dull, brittle, and poor conductors?
500
Dots represent ________ ________ in an electron dot diagram.
What are valence electrons?
M
e
n
u