Science Flashcards
1
Q
Explain why the magnesium alloy is harder than the magnesium metal
A
An alloy has element added so structure is distorted. Layers can no longer slide.
2
Q
Describe the structure and bonding of a diamond
A
Giant covalent structure. Each carbon is bonded to 4 other carbons.
3
Q
Explain why diamond has a very high melting point
A
Strong covalent bonds need a lot of energy to break
4
Q
What does independent variable mean?
A
What you change in an experiment.
5
Q
What does the dependent variable mean?
A
What you measure or observe as a result of the change.
6
Q
What does the control variable mean?
A
Things you keep the same to ensure a fair test.
