Periodic Table Test Flashcards
What is the charge of a proton?
positive
What is the charge of a neutron?
neutral
What is the charge of an electron?
negative
What is the difference between an element and a compound?
A compound contains more than one element. Elements combine to form compounds.
Who organized the Periodic Table?
Dimitri Mendeleev
The atomic mass is the sum of what particles?
protons + neutrons
Explain why all elements in nature are neutral.
Protons and and electrons combine and balance each other out
What is an atom that has differing forms due to different numbers of neutrons?
an isotope
What is the total number of electrons that can be found in the first layer?
2
How many electrons can be found in the second layer?
8
What layers combine to produce the second layer?
S and P layers
How many electrons can be found in the third layer?
18
Which layers combine to create the third layer?
S, P, and D layers
How many electrons may be found in the fourth layer?
32
What layers combine to make the fourth layer?
S, P, D, and F layers
What is the shape of the S layer?
A sphere
what is the shape of the P layer?
A dumbbell
What is the shape of the D layer?
a clover
How does the energy change as the electron layers move away from the nucleus?
They gain potential energy and become less stable
What are the characteristics of metals?
Shiny, solid at room temperature, good conductors of electricity and heat, located to the left and center.
What is most abundant in the Periodic Table?
Metals
What are the characteristics of Nonmetals?
Not shiny, solid or gas at room temperature, not good conductors of heat or electricity, very brittle, don’t reflect light, found at the right side of the Periodic Table
What are the characteristic of metalloids?
Have properties of both metals and nonmetals, good in computers and calculators, carry an electric charge, found on right side of the table
Name the three particles that make up an atom
protons, neutrons, electrons
