educake ch. important p2

• What does malleable mean in relation to metals?

  They can be bent into shape
• Why are metals not considered brittle?

  They bend rather than snap
• What types of compounds do elements in groups 1 and 2 form?

  Ionic compounds or metallic structures
• What property of metals allows them to be bent into shape?

  Malleability
• Why are metals not brittle?

  They bend rather than snap
• What type of bonds do elements in groups 1 and 2 form?

  Ionic or metallic
• What type of bonds are formed between non-metals?

  Covalent
• What is the definition of a mole?

  The same number of molecules, regardless of formula
• When can ionic compounds conduct electricity?

  When molten or dissolved in water
• What is the law of conservation of mass?

  Total mass of reactants equals total mass of products
• What is the formula to calculate volume?

  Volume = mass ÷ concentration
• What is a characteristic of simple molecular substances?

  Low melting and boiling points
• Why do ionic compounds have high melting points?

  Due to the strong ionic bonds
• Why do simple molecular substances have low melting and boiling points?

  Due to weak intermolecular forces
• What are the strengths and weaknesses of ionic compounds?

  Strengths:

  • High melting points
  • Can conduct electricity when molten or dissolved

  
  

  Weaknesses:

  • Cannot conduct electricity when solid
  • Require a lot of energy to overcome strong ionic bonds
• What are the key differences between simple molecular substances and other substances?

  • Simple molecular substances have low melting and boiling points compared to other substances
  • They can be liquid or solid at room temperature, unlike other substances
  • This is due to the weak intermolecular forces between the molecules