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Atoms, Elements, Compounds
Test Description: Physical science
Instructions: Answer all questions to get your test result.
1) which substance are substances arranged orderly
A
solid
B
gas
C
liquid
2) How many elements are in the compound MgOH2?
A
4
B
5
C
2
D
3
3) what substance is a compound
A
salt water
B
sodium
C
chlorine
D
table salt
4) iron oxide, also known as rust, is formed when iron chemically combines with oxygen. element
A
compound
B
mixture
C
solution
D
element
5) when copper and iron chemically unite, they form
A
an ion
B
a compound
C
a gas
6) sugar is composed of carbon, hydrogen, and oxygen...this is an example of
A
a compound
B
a mixture
C
an atom
7) chemical symbol for iron oxide
A
Fe and O
B
Pb and O
C
Ir and O
D
I and O
8) chemical symbol for sodium chloride
A
NaCl
B
H2O
C
CO2
D
Fe2O3
9) how can I separate salt water
A
freeze the mixture
B
evaporate the water
C
filter the salt
D
pour the water out of its container
10) which of these is a compound
A
Mn
B
H2O
C
C
D
Co
*select an answer for all questions
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