Dimensional Analysis

Multiple Choice

Which scientist discovered the nucleus in the "gold-foil" experiment?

• Thomson

• Dalton

• Rutherford

• Artistotle

Multiple Choice

Which ancient Greek philosopher believed that all matter was made up different combinations of four basic elements: earth, air, fire, and water?

• Thomson

• Dalton

• Rutherford

• Artistotle

Multiple Choice

Which scientist predicted that an atom contained electrons that zoomed around the nucleus like planets around the sun?

• Dalton

• Bohr

• Rutherford

• Millikan

Multiple Choice

Which scientist determined the charge of an electron using the "oil drop" experiment?

• Dalton

• Bohr

• Rutherford

• Millikan

Multiple Choice

Which scientist is known for the "plum pudding" model of the atom?

• Dalton

• Bohr

• Thomson

• Millikan

Multiple Select

Which two of the subatomic particles make up the nucleus of an atom?

• proton

• neutron

• electron

Multiple Choice

What does the x stand for in this picture?

• element symbol

• atomic number

• atomic mass

Multiple Choice

What does the a stand for in this picture?

• element symbol

• atomic number

• atomic mass

Multiple Choice

What is an isotope?

• an element with the same atomic mass but different atomic number

• an element with the same atomic number but different atomic mass

Multiple Choice

A proton does what to an element?

• increases charge

• increases mass

• increases charge and mass

• decreases charge

Multiple Choice

An electron does what to an element?

• increases charge

• increases mass

• decreases charge and mass

• decreases charge

Multiple Choice

A neutron does what to an element?

• increases charge

• increases mass

• increases charge and mass

• decreases charge

Draw

Draw a model of an atom that shows its three subatomic particles

Multiple Choice

What is avogardo's number?

• 6.02 x 10^23

• 6.02

• 6

Multiple Choice

What is the formula mass of NaCl?

• 58.5 g/mol

• 58.5 amu

• 816.5 g/mol

• 816.5 amu

Multiple Choice

What is the molar mass of C₆H₁₂O₆?

• 29 g/mol

• 29 amu

• 180 g/mol

• 180 amu

Multiple Choice

Given the equation: 2 N + 3 O₂ -> 2 NO₃

How many moles of NO₃ will produced if there are 3 moles of O₂?

• 1 mol NO₃

• 2 mol NO₃

• 3 mol NO₃

• 6 mol NO₃

Multiple Choice

What is the mass of 9.4 mol of Na?

• 216.2 g Na

• 32.4 g Na

• 0.41 g Na

• 220 g Na

Multiple Choice

How many moles are in of 34 g of Be?

• 3.78 mol Be

• 3.8 mol Be

• 306 mol Be

• 310 mol Be

Multiple Choice

How many atoms are in 2 moles of Ne?

• 1.204 E 23

• 1.20 E 24

• 3.32 E -24

Multiple Choice

If there are 23.0 g of K, how many atoms are there?

• 3.54 E 23 atoms K

• 5.41 E 26 atoms K

• 9.77 E 21 atoms K

Multiple Choice

If there are 4.05 x 10²³ of Mg, how much does it weigh in grams?

• 1.63 E 47 g Mg

• 16.3 g Mg

• 1.00 E 46 g Mg