Metals as Conductors (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
ShowHide
Practise the questions
12 questions from this quiz
Why are metals excellent conductors of heat and electricity?
Why are metals excellent conductors of heat and electricity?
They have delocalised electrons
What are delocalised electrons?
What are delocalised electrons?
Electrons that move freely in metal
What happens when a metal is connected to a power source?
What happens when a metal is connected to a power source?
Delocalised electrons move directionally
What is an electric current in a metal?
What is an electric current in a metal?
Flow of delocalised electrons
How do metals conduct heat?
How do metals conduct heat?
Electrons gain energy and move faster
What causes metallic bonding?
What causes metallic bonding?
Sea of delocalised electrons
In metallic bonding, what surrounds the positively charged metal ions?
In metallic bonding, what surrounds the positively charged metal ions?
A sea of delocalised electrons
What holds a metal together?
What holds a metal together?
Attraction between ions and electrons
Why are metals malleable?
Why are metals malleable?
Atom layers slide without breaking bonds
Why can metals be drawn into wires?
Why can metals be drawn into wires?
Metallic bonds stay intact as atoms slide
Why is copper commonly used in electrical wiring?
Why is copper commonly used in electrical wiring?
High conductivity and inexpensive
Why is aluminium used in power lines?
Why is aluminium used in power lines?
Lightweight and good conductor