Periodic Table and Atomic Structure

Front

What is the main difference between atoms of elements in different groups?

Back

The number of valence electrons each has.

Front

What are the vertical columns on the periodic table called?

Back

Groups.

Front

Which category do the majority of elements fall under?

Back

Metals.

Front

How many periods are there in the periodic table of elements?

Back

7.

Front

Which element has the most similar physical and chemical properties to Sulfur (S)?

Back

Oxygen (O).

Front

What is an atom?

Back

The smallest unit of an element that retains the properties of that element.

Front

What are protons?

Back

Positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutral particles found in the nucleus of an atom.

Front

What are electrons?

Back

Negatively charged particles that orbit the nucleus of an atom.

Front

What is the atomic number?

Back

The number of protons in the nucleus of an atom, which determines the element's identity.