IGCSE Chem 03

Which of the following substances will have ionic bonding?

• copper chloride
• iron
• brass
• sulfur dioxide

Which of the following is NOT true of ionic compounds?

• Metal ions have a + charge
• Non-metal ions have a - charge
• They conduct electricity when they are solid
• They are arranged in a giant lattice

Which of the following is true about the oxide ion?

• Formed by oxygen atoms losing 2 electrons
• Oxygen ions have an empty second shell
• Exist in pairs
• Have a 2- charge

What is the formula of aluminium oxide?

• Al₃O₂
• AlO₃
• Al₂O
• Al₂O₃

Tags

NGSS.HS-PS1-7

Why do ionic compounds conduct electricity when molten or in solution?

• The electrons are free to move and carry charge
• The ions are free to move and carry charge
• The ions are in fixed positions
• Ionic compounds have delocalised electrons

Which statement describes the structure of sodium chloride?

• contains alternating positive and negative ions

• contains an irregular arrangement of ions

• contains positive ions only

• is a giant covalent structure

Which substances exist as covalent molecules?

• chlorine and helium

• chlorine and ethanol

• helium and sodium chloride

• ethanol and sodium chloride

What part of an atom is involved in chemical bonding?

• protons
• neutrons
• electrons
• nucleus

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons does hydrogen have?

• 3
• 2
• 5
• 1

Tags

NGSS.HS-PS1-1

Compounds made from only nonmetals are _________________ compounds.

• ionic
• covalent
• metallic
• chemical

Tags

NGSS.HS-PS1-1