CHAPTER 6: PERIODIC TABLE Science Form 1

All of the following can conduct electricity, except:

• carbon

• sulphur

• copper

• iron

physical change form new substances. True or False?

• True

• False

What are the elements found in table salt (NaCl) that is often used for cooking?

• Iron and sulphur

• sodium and chlorine

• Sodium and oxygen

• Copper and oxygen

Which of the following is true about mercury, iron and copper at room temperature?

• Brittle

• Solid state

• Malleable

• Conduct electricity

Diagram shows the set of water electrolysis.

Based on diagram, what is gas X?

Which of the following is the properties of compound?

• Bonded chemically

• Does not form new substance

• Undergoes physical changes

• Properties of substance and product remain the same

'Neutral particles made up of two or more atoms' is the definition of:

• element

• atom

• molecules

• mixture

Complete the word equation of compound formation below;

Iron + Oxygen —> _______

Complete the word equation of compound formation below;

Sodium + ______ —> sodium hydroxide + hydrogen

Why air is a mixture?

Because air is made up of different _______ or compounds, that combined _______ .

(Type your answer like this ______, ______)