Macromolecules (Giant Covalent Structure)
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Medium
+1
Standards-aligned
miss fay
Used 131+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The ‘lead’ in pencil is made of a mixture of graphite and clay.
If the percentage of graphite is increased, the pencil slides across the paper more easily.
Why is this?
Graphite conducts electricity.
Graphite is a form of carbon.
Graphite is a lubricant.
Graphite is a non-metal.
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The diagram shows a structure of a substance.
What is represented?
diamond
silica
graphite
ethane
Tags
NGSS.HS-PS1-3
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The diagrams show the structures of two forms, P and Q, of a solid element.
What are suitable uses of P and Q, based on their structures?
use of solid P: drilling
use of solid Q: drilling
use of solid P: drilling
use of solid Q: lubricating
use of solid P: lubricating
use of solid Q: drilling
use of solid P: lubricating
use of solid Q: lubricating
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Rescuers are drilling through fallen rock in order to rescue some men trapped in a cave. The drill needs lubricating from time to time.
The following statements were made about the materials used for the drill tip and the lubricant and the reasons for their use.
Which statements are correct?
Diamond was used for the drill tip as it does not conduct electricity.
Diamond was used for the drill tip as it is very hard.
Graphite was used as the lubricant as it conducts electricity.
Graphite was used as the lubricant as it is soft and flaky.
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Graphite is a form of carbon.
Why can graphite be used as a lubricant?
Graphite contains delocalised electrons which move throughout the structure.
Graphite contains weak covalent bonds so the atoms move easily.
Graphite has a low melting point so it easily turns into a liquid.
Graphite has weak forces of attraction between layers so they can move.
Tags
NGSS.HS-PS2-6
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Which statements are correct about diamond and graphite?
They are different solid forms of the same element.
They each conduct electricity.
They have atoms that form four equally strong bonds.
Tags
NGSS.HS-PS1-3
NGSS.HS-PS2-6
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which substance is not a macromolecule?
diamond
graphite
silicon (IV) oxide
sulfur
Tags
NGSS.HS-LS1-6
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