Chemistry Test Review

Which of the following has essentially no mass?

• protons
• neutrons
• electrons
• ions

Which subatomic particle is labeled "b"?

• proton
• neutron
• electron
• ion

A solution with a pH of 6 would be classified as a 

• weak acid
• strong acid
• weak base
• strong base

An atom that has lost an electron becomes a(n)

• positively charged ion
• negatively charged ion
• isotope
• different element

Which of the following is different between two isotopes?

• atomic number
• # of protons
• # of electrons
• # of neutrons

Which type of bond is being depicted below?

• covalent bond
• ionic bond
• hydrogen bond
• peptide bond

Water is _______ dense as a solid than as a liquid.  This means that ice will _____ in water.

• less; float
• less; sink
• more; float
• more; sink

How many valence electrons would the atom below contain?

• 1
• 2
• 3
• 8

Carbon-12 and Carbon-14 are both carbon.  They have different atomic weights.  What do we call Carbon-12 and Carbon-14?

• isotopes
• ions
• compounds
• molecules

Which subatomic particle is labeled  "a"?

• proton
• neutron
• electron 
• ion