Vocab I
A chart that arranges elements having similar properties into the same groups.
What is the periodic table?
A horizontal row of the periodic table.
What is a period?
The lightest elements are found at the _____ of the periodic table.
What is top?
The element krypton has ___ valence electrons.
What is eight?
Electrons have a _______ charge and are found in _______ orbiting the nucleus.
What is negative; energy levels?
A property of matter that can be either positive, negative, or neutral.
What is electrostatic charge?
A group of elements that have similar properties.
What is a chemical family?
Elements that have the same chemical family as oxygen can be found in group ______.
What is 16?
Aluminum is an example of a ______.
What is metal?
What is N?
The attractive force that holds the nucleus of an atom together.
What is strong force?
An element that is typically shiny and hard and a good conductor of heat and electricity.
What is a metal?
Most elements on the periodic table are _____ and ______.
What is solid and metal?
This element has 2 electrons in the first energy level, and 6 electrons in the second energy level.
What is oxygen?
What is tin?
The ______ is the number of protons in one atom of a particular element, whereas the ________ is the number of protons plus the number of neutrons in one atom.
What is atomic number; atomic mass?
An element that is typically dull and brittle and a poor conductor of heat and electricity.
What is a nonmetal?
This increases as you move down in each period.
What are energy levels?
Which element is more reactive: Chlorine or Bromine?
What is Chlorine?
The element with the atomic symbol of Se has how many protons, neutrons, and electrons?
What is 34 protons, 45 neutrons, and 34 electrons?
An electron in the outermost energy level of an atom.
What is a valence electron?
A figure in which dots around an element’s symbol represent valence electrons.
What is electron dot diagram?
Elements in this group are going to want to lose 3 valence electrons to become stable.
What is group 13?
Name the atomic mass of the metal element in the fourth period that has the same number of protons, neutrons, and electrons.
What is 40?
This is the most reactive element on the periodic table.
What is hydrogen?