Solder

The figure shows a ______.

• Spool of solder
• Soldering iron
• Solder joint
• Wire cutter

The figure shows a _______.

• Spool of solder
• Soldering iron
• Solder joint
• Component

The purpose of the soldering iron is to ____________.

• Melt the solder
• Remove oxides from the lead
• Trim component leads
• Heat the connecting joint

Solder is made of a mixture of ______.

• Tin and rosin
• Flux and rosin
• Tin and lead
• Steel and lead

Solder in electronics contains a central core of  ________.

• Tin and lead
• Silver
• Rosin flux
• Steel

In a good solder joint the solder should attach to _____.

• The component lead
• The pad on the board
• Both of the above
• Neither of the above

The figure shows a _______.

• Cold solder joint
• Solder bridge
• Good solder joint
• Connecting leads

This figure shows a _________.

• Solder joint with solder not attached to the pad
• Cold solder joint
• Solder bridge
• Hot solder joint

This figure shows a ________.

• Joint with leads not trimmed
• Solder bridge
• Good solder joint
• Cold solder joint

What should you always wear when soldering?

• safety goggles

• contact lenses

• leather gloves

• an apron