1.1 Metals and non-metals Flashcards
1
Q
How to tell where a metal is
A
It is on the left hand side of the periodic table
2
Q
Where are non-metals
A
On the right of the periodic table
3
Q
How to tell whether an element is a metal or non-metal
A
Examine its properties
4
Q
5 properties of a non-metal
A
Poor conductor of electricity Poor conductor of heat Dull Low density of light Brittle (breaks easily)
5
Q
Do all elements fit the pattern
A
The system is not perfect, but elements near the stepped line are metalloids.
6
Q
What do metals and non-metals have differently
A
They have different physical and chemical properties.
7
Q
Metal oxides
A
Solid at 20 degrees
If dissolved in water, they form alkaline solutions
8
Q
Non-metal oxides
A
Gases at 20 degrees
Dissolve in water to form acidic solutions
