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This set of MCQs helps you brush up on important chemistry topics and prepare you to dive into skill practice.
________ are heterogeneous forms of matter.
Compounds
Mixtures
Both
Neither
Which of the following are not properties of compounds?
The proportions of the elements in a compound are always fixed.
It is easy to separate the elements of a compound.
It takes a large amount of energy to separates the elements of a compound.
The elements/components of a compound do not retain their individual properties.
The elements that make up a _________ can be separated by physical means.
Mixtures
Compounds
Both
Neither
Which of the following are ways that a mixture can be separated?
Filtration
Decantation
Evaporation
All of the above
When atoms of different elements are joined together into groups, they create __________.
Compounds
Mixtures
Molecules
None of the above
The law of constant composition states that the ratio by mass of the elements in a chemical compound is always the same, regardless of the source of the compound (i.e. the proportions are constant). This law applies to which of the following?
Mixtures
Compounds
Molecules
Elements
This contains various elements and compounds that are not chemically combined.
Water
Elements
Mixture
Compounds
True or False, Copper is a mixture.
True
False
