Magnesium reacts with Oxygen

What property of magnesium is demonstrated when it reacts with oxygen to produce light and heat?

• Malleability

• Conductivity

• Brittleness

• Chemical reactivity

What is the product formed when magnesium reacts with oxygen?

• Magnesium chloride

• Magnesium carbonate

• Magnesium sulphate

• Magnesium oxide

What is the appearance of magnesium oxide?

• White ribbon

• Shiny ribbon

• Black powder

• White powder

How many valence electrons does magnesium have?

• 6

• 8

• 2

• 4

What type of bond is formed between magnesium and oxygen?

• Covalent bond

• Metallic bond

• Ionic bond

• Hydrogen bond

What is the overall charge of the magnesium ion after it loses its valence electrons?

• 2-

• 2+

• 1+

• 1-

What is the overall charge of the oxygen ion after it gains electrons?

• 1-

• 2+

• 1+

• 2-

Why do magnesium and oxygen form an ionic compound?

• Because they share electrons

• Because they both have a full set of valence electrons

• Because of the transfer of electrons creating oppositely charged ions

• Because they both lose electrons

What is the purpose of providing activation energy in the reaction between magnesium and oxygen?

• To break the ionic bond

• To initiate the chemical reaction

• To increase the mass of magnesium

• To decrease the reaction temperature