
Chem. 805 Module Test (39 mins.)
Quiz
•
Chemistry
•
8th Grade
•
Hard
Romans 10: 9-10
Used 3+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Choose the correct purpose of electrorefining:
To extract metals from their ores.
To purify the metals
To deposit a thin layer of metal over another metal.
To neutralize the electronegativity of metals.
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Choose the correct purpose for electroplating:
To decrease the mass of a metal
To deposit a thin layer of metal over another metal
To deposit a layer of non-metal over another metal
To purify a metal
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Choose the correct purpose for electrometallurgy:
To increase the lustre of a metal
To deposit a thin layer of metal over another metal
To restrict the movement of ions
To extract metals from their ores
4.
OPEN ENDED QUESTION
2 mins • 1 pt
List 2 metals that use the process of electrorefining to be purified:
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OFF
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Define a pure substance:
...an element or a compound that has a fixed composition and definite physical and chemical properties.
...an element or a compound that has a changing composition and variable physical and chemical properties.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A balanced chemical equation is named so because the______________are the same on the reactants' side and the products' side
number of protons
number of electrons
number of atoms
number of neutrons
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Fractional distillation (as a separation process) can be used because_______________substances have different melting and boiling points.
same
different
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