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Mixtures & Chemical Equations
Test Description: Types of Chemical Mixtures and Balancing Chemical Equations
Instructions: Answer all questions to get your test result.
1) If a spoonful of salt is mixed in a glass of water, what is the water called?
A
Solution
B
Solvent
C
Solute
D
Element
2) A colloid has properties of both suspensions and
A
Solutions
B
Solvents
C
Nonmetals
D
Solutes
3) What is formed when particles fo two or more substances are distributed evenly among each other?
A
Compound
B
Element
C
Suspension
D
Solution
4) How is a compound different from a mixture?
A
Compounds are commonly found in nature
B
Compounds have two or more components
C
Each substance in a compound loses its characteristic properties
D
Solids, Liquids and Gases can form componds
5) When elements form mixtures, the elements...
A
combine in a specific mass ratio
B
always change their physical state
C
Keep their original properties
D
React to form a new substance with new properties
6) Which of the following states the law of conservation of mass?
A
Atoms are rearranged in a chemical reaction, and some join new molecules.
B
Mass cannot be created or destroyed in a chemical reaction.
C
Two compounds combine to form a new compound with different properties.
D
Energy is neither created nor destroyed in a chemical reaction.
7) Why can salt dissolve in water?
A
Salt is an element.
B
Salt is soluble.
C
Salt is a solution.
D
Salt is the solvent.
8) Which is the product in this chemical formula? N + O2 --> NO2
A
N
B
O2
C
O
D
NO2
9) If the ending -ide is added to the name of an ion, what do we know about the ion?
A
The ion has a negative charge.
B
The ion has a neutral charge.
C
The atom lost electrons.
D
The ion has a positive charge.
10) Which of the following chemical equations is balanced?
A
3Ca + 2O2 --> 5CaO2
B
Ca + O2 --> CaO2
C
Ca + 2O2 --> 2CaO2
D
3Ca + O2 --> 3CaO2
*select an answer for all questions
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