Metals

Question 1

What are the 6 characteristics of metals?

Answer 1

1. Sonorous
2. Lustrous
3. Ductile
4. Malleable
5. Good conductor of heat
6. Good conductor of electricity

Question 2

What does sonorous mean?

Answer 2

makes a sound when struck

Question 3

What does Lustrous mean?

Answer 3

shines when polished

Question 4

What does Ductile mean?

Answer 4

can be stretched into wire

Question 5

What does malleable mean?

Answer 5

can be beaten into shape

Question 6

What are the 6 characteristics of non-metals?

Answer 6

1. Dull in appearance
2. Light in weight
3. Soft
4. Brittle
5. Poor conductor of heat
6. Poor conductor of electricity

Question 7

What is an alloy?

Answer 7

A metallic solid of two (2) or more elements which has enhanced (stronger or more durable) properties in comparison to the individual components.

Question 8

What is an element?

Answer 8

A substance that cannot be broken down to any smaller by a chemical reaction.

Question 9

What are three examples of alloys?

Answer 9

Brass – Copper + Zinc
Bronze – Copper + Tin
Steel – Iron + Carbon

Question 10

What is rusting?

Answer 10

It is the oxidation of iron into iron oxide.

Question 11

How do you know when rusting occurs?

Answer 11

We know rusting occurs when the iron which is gray in color turns brown.

Question 12

What is the word equation for rusting?

Answer 12

Iron + oxygen gas → Iron oxide (rust)

Question 13

What are the conditions required for rusting to occur?

Answer 13

Iron must be present, as well as oxygen gas and water (moisture).

Question 14

What are two methods used to avoid rusting?

Answer 14

Painting and oiling