Chemistry of Life Test

Which subatomic particles are involved in forming bonds with other atoms?

• valence electrons
• valence protons

These two oxygen atoms are equally sharing their electrons. What type of bond is this?

• polar covalent bond
• nonpolar covalent bond
• ionic bond
• hydrogen bond

How many valence electrons are in this atom?

• 2
• 8
• 10
• 11

What charge does an electron have?

• positive
• negative
• neutral

What charge does a proton have?

• positive
• negative
• neutral

What charge does a neutron have?

• positive
• negative
• neutral

Which two particles are found in the nucleus of an atom?

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

What is the atomic mass of lithium?

• 3
• 4
• 7

How many protons are in one atom of lithium?

• 3
• 4
• 7

How many neutrons are in one atom of lithium?

• 3
• 4
• 7