Mixtures and Compounds Quiz

________ are heterogeneous forms of matter.

• Compounds

• Mixtures

• Both A and B

• Neither

__________ are homogeneous forms of matter.

• Compounds

• Mixtures

• Neither

• Both A and B

Which of the following are properties of compounds? Check all that apply.

• It takes a large amount of energy to separates the elements of a compound.

• The proportions of the elements in a compound are always fixed

• It is easy to separate the elements of a compound.

• The elements/components of a compound do not retain their individual properties.

Which of the following are properties of a mixture? Check all that apply.

• The proportions of elements in a mixture are fixed.

• The components of a mixtures are easily separated.

• Each of the components in a mixtures retains its original properties.

• All of the above

Which of the following are examples of mixtures?

• Air

• Ocean Water

• table salt

• all of the above

The elements that make up a _________ can be separated by physical means.

• compounds

• mixtures

• both compounds and mixtures

Which of the following are ways that a mixture can be separated?

• evaporation

• decantation

• filtration

• all of the above

All matter can be classifed into two main categories: pure substances and mixtures.

• True

• False

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?

• compounds

• mixtures

• both

• neither