A(n)____________ is a pure substance made only of one type of atom.

Where are protons and neutrons located in an atom?

_______ are arranged in energy levels outside of the nucleus.

• protons

• neutrons

• electrons

• ortibal shells

Mendeleev put the elements on the periodic table in the order of how many ______ it has.

Nh is the symbol for what element on the periodic table.

• Nickel

• Nihonium

• Neon

• Neodymium

What are the Rows on the periodic table called?

• Rows

• Groups

• Periods

• Elements

Draw Helium atom- red protons, green neutrons, and blue electrons don't forget orbital shells

What information does the atomic number give you about the element?

• How many neutrons there are?

• How many electrons there are?

• How many protons there are?

• How many shells there are?

When you add the protons and neutrons together you get the _________.

What does the Si stand for?

• Atomic Number

• Symbol

• Element Name

• Atomic Mass