Review for EST-1
Authored by David Lesmana
Chemistry
7th Grade
Used 9+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the element symbol for aluminium?
Al
Am
AL
AM
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What will happen when water freezes?
They gain energy and move further apart.
They lose energy and move further appart
They lose energy and get closer to each other
They gain energy and get closer to each other
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What apparatus must be used to separate sand from a mixture of sand-water?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Magnesium iodide has 1 magnesium atom and 2 iodine atoms. What is the best chemical formula to represent this compound?
MgIn2
Mg2I
MgI
MgI2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which statement about isotopes is incorrect?
Isotopes have the same number of protons
Isotopes have different physical properties
Isotopes have different number of neutrons
Isotopes have different chemical properties
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the relative atomic mass of Ge.
72.89
73.0
74
75
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which process does not represent a chemical change?
Baking a cake
Respiration
Photosynthesis
Melting
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