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2000
Chemical Reactions
1


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Questionario a risposta multipla
1- A change in which old bonds are broken and new bonds are formed, resulting in new substances being produced is called
an ion
distillation
a chemical reaction
dissolving
filtration
2- When a result in the ion test is negative (no color or precipitate) for a water sample,this means
no ion is present
not enough reference was used
no ion is present or very small amounts of ion may be present
the test produced solution but not a colloid
the test results produced a suspension
3- Which of the following examples of matter can only be separated into two or more substances by chemical methods?
compound
element
heterogeneous mixture
homogeneous mixture



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