Science 9: Unit 4 Review

What is the molar mass of an element with an average atomic mass of 12.01 u?

Who used a cathode ray tube to prove the existence of negative particles in an atom?

What is the atomic mass of Cesium?

How many grams are in 6.7 mol of magnesium?

Bohr claimed that electrons moved around the nucleus in fixed paths. 

How many moles are in 760 grams of bromine?

1 mol of N-14 will have a mass of ___________. 

A calcium atom has how many protons?

Avagadro's number (6.022 x 10²³)is used to count the number of _______________

An electron will jump to a higher energy level when _________

Whose gold foil experiment lead to the discovery of the nucleus?

C-13 and C-14 have different masses because they have a different number of ____________

The four orbitals are __________. 

What is the average atomic mass of Ti?

The modern atomic theory states that electrons can be found exactly where predicted.

A mole is an SI base unit that describes the ____________

A unit or quantum of light is called a _______. 

Who was the first person to say all things are made up of atoms?