Chemical bonding: fill in the blanks · Grade 9

The word bank and sentences

Directions: Read each sentence. Choose the best word from the word bank and write it on the line. Some words are not used.

• Word bank: cross out each word as you use it
• covalent · nonpolar · ionic · floats ____ lone pair ____ organic electrons ____ octet rule ____ bent ____ melting points
• 1 Hydrogen bonds hold ice in an open structure, which is why ice on liquid water.
• 2 Oil and water do not mix because water is polar and oil is ____.
• 3 Metals conduct electricity because their · can move freely.
• 4 Ionic compounds tend to have high ____.
• 5 Water molecules have a · shape, which makes them polar.
• 6 Carbon can form four covalent bonds, allowing a huge variety of molecules.
• 7 In a · bond, atoms share pairs of electrons.
• 8 Table salt is held together by · bonds between sodium and chloride ions.