3.2 Notes

Multiple Choice

In a correctly written symbol what would be located in the "A" position?

• number of neutrons
• atomic number
• number of electrons 
• mass number

Multiple Choice

Which of the following statements regarding subatomic particles is incorrect?

• Protons are positively charged particles and neutrons have no charge.
• The relative mass of the proton, electron and neutron the same.
• In a neutral atom the number of protons equals the number of electrons.
• Isotopes of an element have the same number of protons but a different number of neutrons.

Multiple Choice

Which subatomic particle is used to identify the atom, as it never changes?

• protons

• neutrons

• electrons

Multiple Choice

Which of the following particle pairs has approximately the same mass?

• protons and neutrons
• protons and electrons
• neutrons and electrons
• protons, neutrons and electrons

Multiple Choice

Calculate the average atomic mass of silver.

• 106.38649amu
• 111.91896amu
• 107.8677amu
• 121

Multiple Choice

Iron-60 (atomic number 26) is an isotope that is often used to study meteorites.  How many neutrons does iron-60 have?

• 26
• 60
• 34
• 86

Multiple Choice

How many protons does this isotope of titanium have? Hint titanium has an atomic number of 22.

• 48
• 22
• 26
• 70

​64

Multiple Choice

In a correctly written symbol what would be located in the "A" position?

• number of neutrons
• atomic number
• number of electrons 
• mass number

Multiple Choice

Which of the following statements regarding subatomic particles is incorrect?

• Protons are positively charged particles and neutrons have no charge.
• The relative mass of the proton, electron and neutron the same.
• In a neutral atom the number of protons equals the number of electrons.
• Isotopes of an element have the same number of protons but a different number of neutrons.

Multiple Choice

Which subatomic particle is used to identify the atom, as it never changes?

• protons

• neutrons

• electrons

Multiple Choice

Which of the following particle pairs has approximately the same mass?

• protons and neutrons
• protons and electrons
• neutrons and electrons
• protons, neutrons and electrons

Multiple Choice

Calculate the average atomic mass of silver.

• 106.38649amu
• 111.91896amu
• 107.8677amu
• 121

Multiple Choice

Iron-60 (atomic number 26) is an isotope that is often used to study meteorites.  How many neutrons does iron-60 have?

• 26
• 60
• 34
• 86

Multiple Choice

How many protons does this isotope of titanium have? Hint titanium has an atomic number of 22.

• 48
• 22
• 26
• 70

Multiple Choice

If the number of electrons in an atom changes you make a(n) __________________.

• ion
• isotope
• new element
• isomer