Topic 4

Question 1

Element Symbols

Answer 1

Symbols made up of 1 or more letters used to identify elements. First Uppercase, rest lowercase

Question 2

Metals vs metalloids vs Non- metals

Answer 2

Metals- all solid at room temp except for mercury, they are shiny, malleable and ductile and they conduct electricity and heat well

Metalloids- Solids, shiny or dull, may conduct electricity, poor conductors of heat, brittle and not ductile

Non- Metals- Some gases, Some solid, Bromine liquid, they are not very shiny, poor conductors of heat and electricity, brittle and not ductile.

Question 3

Chemical Family

Answer 3

a term used to describe a group of related elements that have similar properties

Question 4

Alkali Metals

Answer 4

Most metals are reactive, but the alkali are extremely reactive. They hold an unpaired atom that tends to rid of the electron by forming a compound

Question 5

Alkali Earth Metals

Answer 5

The alkali earth metals react fairly vigorously but not as much as alkali metals.

Question 6

Halogens

Answer 6

Halogens are substances that are also extremely reactive. They also have an unpaired electron but they tend to gain one instead of give one. They are also extremely corrosive and harmful.

Question 7

Noble Gases

Answer 7

Noble gases are extremely nonreactive. They almost never react with anything to form compound. Their electron shells are all full, so they are very stable. Even when they do react their compounds soon decompose, allowing the noble gas to separate into atoms again.