Grade 7

Cow milk is a _________ mixture.

• Homogeneous

• Heterogeneous

• Pure Substance

• None of the Above

Distilled water is a____________.

• Homogeneous Mixture

• Heterogeneous Mixture

• Pure Substance

• None of the Above

Blood is a_________mixture.

• Homogeneous

• Heterogeneous

• Pure Substance

• None of the Above

The separation technique presented in the above image represents___________.

• Manual Sorting

• Sifting

• Magnetization

• Decantation

Centrifugation is________.

• A non-precise way of separating a heterogeneous mixture.

• A precise way to separate a homogeneous mixture.

• A fast way to separate a heterogeneous mixture.

• A way to separate colored pigments in a homogeneous mixture.

Distillation is mainly made of two consecutive steps:

• Evaporation followed by boiling.

• Condensation followed by evaporation.

• Evaporation followed by condensation.

• Cooling followed by condensation.

A mixture of oil and water can be separated by:

• Decantation using a separatory funnel

• Decantation using a filter paper

• Distillation

• Manual Sorting

A mixture of copper sulfate crystals and water can be properly separated by:

• Manual Sorting

• Magnetization

• Filtration

• Distillation

A mixture of rice and water can be separated by evaporation.

• True

• False

In order to separate a mixture of coal, sand, and sugar, one must:

• 1. Remove coal by manual sorting and add water to dissolve the sugar.

  2. Remove sand by filtration and separate sugar from water by distillation.

• 1. Remove coal by magnetization and add water to dissolve the sugar.

  2. Remove sand by centrifugation and separate sugar from water by distillation.

• 1. Remove coal by filtration and add water to dissolve the sugar.

  2. Remove sand by magnetization and separate sugar from water by distillation.

• They cannot be separated