Unusual Metals Flashcards
1
Q
Which is the only only metal liquid at room temperature?
A
Mercury
2
Q
Most metals are..
A
Solid
3
Q
What is mercury used in and why?
A
It’s used in thermometers because liquids expand more than solids when heated, and metals are good conductors of heat.
4
Q
What is the normal body temperature?
A
37°C
5
Q
What other metals are unusual?
A
Sodium
Potassium
Lithium
6
Q
Symbol for sodium
A
Na
7
Q
Symbol for potassium
A
K
8
Q
Symbol for lithium
A
Li
9
Q
Why are the 3 unusual?
A
They have low density
10
Q
What has a lower density than water?
A
Sodium
11
Q
Physical properties of sodium
A
Soft
Can be cut with a knife
12
Q
Why is sodium unusual?
A
Most metals react slowly or not at all with water, sodium reacts strongly, giving off hydrogen gas and making an alkaline.
13
Q
Symbol for hydrogen
A
H
