Elements

What is the chemical formula for water?

Which one is not a compound?

Which of these people designed atomic models?

Who came up with the word "element"?

Electrons have _______________ charges.

Which one is not a Group of elements?

Which of these are not physical properties of an element?

What element has the lowest atomic mass?

Methane is a gas associated with?

What are elements made out of?

There are _______ known elements?

Who discovered the theory of relativity that explains mass and energy in atoms?

Who received a nobel prize in physics for measuring the negative charge of electrons?

Neutrons and _________ are located in the nucleus of an atom.

Which scientist discovered small negative charges and positive charges in atoms?

Who is credited with organizing the Periodic Table?

What is the atomic number of Calcium?

How are the elements grouped?

Protons have ___________ charges.

The noble gases have __________ reactivity?

______ are located around the nucleus in orbitals.