Subatomic particle with a positive charge

Subatomic particle with a negative charge

Subatomic particle(s) located in the shells outside the nucleus

Atoms are mostly...

The mass of an atom is found by adding which subatomic particles?

The number of _______________ in an atom is represented by its atomic number.

How many protons does Helium (He) have?

All Elements are either _________________, _____________________, ____________________. (select all that apply)

Most of the elements on the periodic table are classified as _______________.

Which Chemical symbol is written correctly? (Select all that apply)

The 18 vertical rows on the Periodic Table are known as?

The 7 horizontal rows on the Periodic Table are known as ________________.

As we move right on the Periodic Table our atomic number increases by _____________.

What Russian Scientist first constructed the Periodic Table?

What is the atomic mass of Sulfur?

The nucleus of an atom contains the ____.

Two or more atoms that combine form a ______.

All of the elements known are found on the _________.

These elements are in a:

Hydrogen can become an isotope by adding a(n)

Metals are located on the

________ side of the

Periodic Table.

Find the element on Period 3 and Group 17. What is

this element’s chemical symbol?