Chemistry Practice Tests – Separating Techniques for Mixtures

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______ separating technique is used to separate solid particles of different sizes.

A. Evaporation      B. Decantation      C. Filtration       D. Sieving

The constituents of Air includes the following EXCEPT _______

A. Nitrogen       B. mineral salts       C. oxygen      D. water vapour

_______ is the smallest particle of a compound which retains the identity of the compound.

A. An atom   B. Matter   C.  An element   D. A molecule


Identify the figure labeled C in the diagram above.

A. gas       B. cooking gas       C. Bunsen burner      D. flame


Identify the figure labeled B in the diagram above.

A. tripod stand       B. retort stand       C. chair      D. cooking table

_______ contains two or more elements which are chemically combined.

A. A compound     B. Matter      C.  An element      D. A molecule

The following are examples of chemical changes EXCEPT _____

A. melting of solids to liquids  
B. dissolution of metals in acids  
C. rusting of iron  
D. decay of substances


Identify the figure labeled A in the diagram above.

A. cup       B. Bunsen burner       C. dish       D. evaporating dish


The diagram above illustrate _______ method of separating mixtures.

A. Evaporation      B. Decantation       C. filtration      D. none of the above

In the process of filtration, the solids that remains in the filter paper is known as the ______

A. filtrate      B. waste      C. residue      D. none of the above

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