Quick study before the exam

Question 1

What are the properties of metalloids?

Answer 1

Metalloids are good semiconductors, are normally solids, are usually brittle, and typically behave as non-metals in a chemical reaction.

Question 2

What are the properties of non-metals?

Answer 2

Non-metals have lower melting points, are brittle, are poor conductors of electricity or heat, and gain electrons easily.

Question 3

What are properties of Alkali metals?

Answer 3

Alkali Metals – Have high thermal and electrical conductivity, are ductile and malleable, all have a single valence electron, and are all highly reactive.

Question 4

What are the properties of Alkali Earth metals?

Answer 4

Alkali Earth Metals – Have two valence electrons, but they share their other properties with alkali metals.

Question 5

What are the properties of Transition metals?

Answer 5

Transition Metals – Are very hard, form coloured compounds, but shares the rest of its properties with alkali and alkali earth metals.

Question 6

What are the properties of Halogens?

Answer 6

Halogens – Have seven valence electrons, are toxic and produce sodium salt with similar properties, but apart from that they aren’t too similar.

Question 7

What are the properties of Nobel Gases?

Answer 7

Noble Gases – Are odorless, colorless, non-flammable gases which aren’t very reactive and possess 8 valence electrons.