Fechar
Name three gases found in the air, which are also elements.
Name 2 gases found in the air which are compounds
What % of the air is
1. nitrogen
2. oxygen
3. carbon dioxide
4. argon
Use a periodic table: Name
1. 2 compounds made of a metal and non-metal
2. 2 compounds made of non-metals
What is a molecule?
Why do gases have low melting and boiling points?
Why don't molecular compounds conduct electricity?
What type of bonds do molecules have?
True or false:
oxygen is a gas at room temperature because the forces between atoms are weak.
True or false:
methane CH4, has a lower boiling point than ethane C2H6, because there are less bonds to break
