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1L - Chemistry Review Part 3
Test Description: Grade 9 locally developed science chemistry review: elements, compounds, solutions and mechanical mixtures
Instructions: Answer all questions to get your test result.
1) When you have a mixture, and you can see the different parts, it is called a
A
element
B
solution
C
mechanical mixture
2) A combination of two or more elements is called a
A
element
B
compound
C
mechanical mixture
3) The most pure substances are called
A
elements
B
mechanical mixtures
C
solutions
4) When you have a mixture, but you cannot see the different parts, it is called a
A
element
B
mechanical mixture
C
solution
5) Salt water is an example of a(n)
A
mechanical mixture
B
compound
C
element
D
solution
6) Sodium chloride is an example of a(n)
A
element
B
compound
C
solution
D
mechanical mixture
7) Hydrogen is an example of a(n)
A
solution
B
mechanical mixture
C
element
D
compound
8) Nitrous oxide is an example of a(n)
A
element
B
solution
C
mechanical mixture
D
compound
9) Pizza is an example of a(n)
A
element
B
mechanical mixture
C
compound
D
solution
10) Kool-aid crystals in water is an example of a(n)
A
mechanical mixture
B
solution
C
element
D
compound
*select an answer for all questions
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