Duplicate of Chapter 3 Modern Chemistry

The stream of electrons in the cathode ray, bends toward the _________ end of a magnet

Law that states that mass cannot be created nor destroyed

Electrons are ____________ protons

The model that JJ Thomson came up with to explain the overall neutral charge of the atom?

The nucleus is

JJ Thomson concluded 3 things about the electron

How many protons are in carbon-12?

Who discovered the electron?

How many atoms are in 1 mol of Potassium?

How many electrons are in a neutral Sulfur atom?

Which is a part of Dalton's Atomic Theory?

Who discovered the nucleus?

The amount of atoms in a mole

Dalton's Atomic Theory has been

Which element?

What is the average atomic mass of Carbon?

Use Periodic Table for following questions. How many protons in one atom of Oxygen?

The average of all naturally occurring isotopes masses is the

Which experiment?

A Magnesium atom has 12 protons 14 neutrons and 12 electrons. What is the mass number?

What device aided in discovering the electron?

How many mols in 22 grams of nitrogen?