Nat 5 Metals

Which of the following has metallic bonding ?

• carbon

• silicon

• lead

• hydrogen

which of the following statements is TRUE

• Metals conduct electricity as they have ions that are free to move

• Metals conduct electricity as they have electrons that are free to move

• Metals do not conduct electricity as no electrons are free to move

• Metals do not conduct electricity as no ions are free to move

• A

• B

• C

• D

Which of the following does not react with dilute acid?

• Magnesium

• Copper

• Zinc

• Calcium

Which of the following metals can be extracted by heat alone ?

• Aluminium

• Iron

• Silver

• Zinc

Place the metals in order of reactivity ..least reactive to most

• w x y z

• z y x w

• y x z w

• w z x y

Which is the correct extraction method for aluminium?

• electrolysis

• heating with carbon

• heat alone

Which of the following correctly describes what happens during electrolysis ? TWO ANSWERS

• the non metal ion travels to negative electrode

• the metal ion travels to negative electrode

• the metal ion travels to positive electrode

• the non metal travels to positive electrode

• A

• B

• C

• D

• A

• B

• C

• D