3-a Chemistry Unit 1 test

Name of this element: Br

• Boron

• Bromine

• Carbon

• Sulfur

Is an example of a heterogeneous mixture.

• Milk

• Water

• Soil

• Smog

Is one method to separate mixtures using capillary action.

• Filtration

• Distillation

• Chromatography

• Filtration

Substances together without a chemical bond between them are called:

• Elements

• Compounds

• Mixtures

• Molecules

The difference between a molecule and a compound is:

• There is no difference

• The number of atoms

• The number of chemical bonds

• The number of properties

Method used to purify water from pollutants.

• Crystallization

• Distillation

• Chromatography

• Sieving

Method used in constructions to separate soil into smaller grades of particles.

• Sieving

• Distillation

• Filtration

• Gravity

Method used in lab studies like pregnancy tests:

• Distillation

• Filtration

• Sieving

• Chromatography

A molecule with a slight positive charge in one side and another slight negative charge at the

other one is called:

• Polar molecule

• Complete molecule

• Heterogeneous mixture

• Homogeneous mixture

Substance formed by the chemical bond between two elements of the same type together.

• Diatomic molecule

• Compound

• Mixture

• Particle