Chemistry Midterm Review

How many neutrons does the isotope of lithium have?

• 8
• 3
• 4
• 5

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

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

What quantities vary between isotopes of an element?

• protons, electrons, and atomic mass
• protons, electrons, and atomic number
• neutrons and electrons
• neutrons and atomic mass

How many protons does this isotope of titanium have?

• 48
• 22
• 26
• 70

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

• ion
• isotope
• new element
• isomer

Ions are: 

• atoms with a positive or negative charge
• atoms with no charge
• atoms with ONLY a positive charge
• atoms with ONLY a negative charge

How many electrons are in an atom that has an atomic number of 34, an atomic mass of 74 and a charge of -2?

• 34
• 36
• 2
• 40

Two isotopes of carbon are carbon-12 and carbon-14.  These isotopes differ from one another by two protons.

• true
• false

How many neutrons in C-14?

• 6
• 7
• 14
• 8

which atom has  4 neutrons?

• Li-6
• Li-7
• Li-8
• they have the same # of neutrons