Unit 1-(a) Substances-A. Elements Flashcards
0
Q
What is an element?
A
One type of atom.
1
Q
How many elements are there?
A
About 100.
2
Q
What does each element have?
A
A name and symbol.
3
Q
How can elements be classified?
A
- naturally occurring/man made
- solid/liquid/gas
- metal/non metal
4
Q
What are elements arranged in?
A
The Periodic Table.
5
Q
How are elements arranged in the periodic table?
A
Elements in the same group have similar chemical properties.
6
Q
What is a row called?
A
A Period.
7
Q
What is a column called?
A
A group.
8
Q
What are the alkali metals?
A
A group of very reactive metals. Group 1.
9
Q
What are the halogens?
A
A group of very reactive non metals. Group 7.
10
Q
What are the noble gases?
A
A group of very un reactive non metals. Group 0.
11
Q
Where can you find the transition metals?
A
Between groups 2 and 3.
