Covalent Bonds and Small Molecules Quiz

What is a covalent bond?

• A bond between metal and non-metal elements

• A bond between atoms formed when atoms share electrons

• A bond that only occurs in liquids

• A bond formed by the transfer of electrons

Where does covalent bonding usually occur?

• In metallic bonds

• Between metals

• In ionic compounds

• Between non-metals

What do substances with small molecules not do?

• Form molecules

• Melt at high temperatures

• Conduct electricity

• Have low boiling points

How many atoms of hydrogen are in a water molecule?

• 3

• 1

• 4

• 2

What is the size range of small molecules?

• Around 0.1 nm across

• Around 100 nm across

• Around 10 nm across

• Around 1 nm across

What is the formula for ammonia?

• HCl

• CO2

• NH3

• H2O

How many chlorine atoms are in one molecule of hydrogen chloride?

• 4

• 3

• 2

• 1

What type of microscope can produce images of atoms?

• Infrared microscope

• Light microscope

• Ultraviolet microscope

• Electron microscope

What is the chemical formula of oxygen?

• O4

• O

• O2

• O3

What is the number of atoms in one molecule of nitrogen?

• 1

• 2

• 4

• 3