Name:
Class:
Metals CW2
Grade 7
1- Define:
a- Alloy :
b- Particle accelerator
c- Conductivity
2abcdef-
Put true or false in front of the following statements
Iron doesn’t corrode by rusting
Calcium is needed for bones good health
Magnesium and aluminum are used to make strong but light weight alloys
Tin is used to coat food cans
Lead is safe for human consumption
Lanthanides are found separately in nature
3- Write two examples on metals from alkaline earth metals?
4- Which transition metal is used for making long wires? And why is it used for this purpose?
5- What is the name of the metals found in groups 13 to 15
6- Arrange the following metals from the most reactive to the least reactive
a- Calcium
b- Gold
c- Sodium