[G3 LSS] 3.4 Comparing Compounds and Mixtures

Is iron an element?

• Yes!

• No...

What is one physical property displayed in the video about iron?

• It is shiny.

• It is hard.

• It is magnetic.

• It is a good conductor of electricity.

Is sulfur a metal or non-metallic element? Why?

• It is a metallic element because it is found in the LEFT of the Periodic Table.

• It is a metallic element because it is found in the RIGHT of the Periodic Table.

• It is a non-metallic element because it is found in the LEFT of the Periodic Table.

• It is a non-metallic element because it is found in the RIGHT of the Periodic Table.

After mixing iron and sulfur, what is the colour of the mixture?

• Grey

• Yellow

• Black

• Specks of grey and yellow

Are sulfur and iron chemically combined in the beaker? Which evidence explain why?

• Yes. Because iron and sulfur are mixed together and reaction has occured.

• Yes. Because iron and sulfur are too small to be separated.

• No. Because iron can be separated easily from sulfur using a magnet.

• No. Because the substance in the beaker contains two colours.

What do you THINK is the purpose of heating?

What colour DO YOU THINK is the mixture of iron and sulfur after they are heated and chemically combined?

• grey

• yellow

• specks of grey and yellow

• black

Which diagram LIKELY represents the mixture of iron and sulfur AFTER heating?

• 
• 
• 

What is ONE difference between a mixture and a compound?

• Compounds have similar properties as its elements but mixtures have different properties as its components.

• 
  Mixtures have similar properties as its components but compounds have different properties as its elements.

(a) Can the constituents (components) a mixture between iron and sulfur be separated easily?

(b) Can iron and sulfur be separated easily after they are chemically combined?

• (a) Yes
  (b) Yes

• (a) Yes
  (b) No

• (a) No
  (b) Yes

• (a) No

  (b) No