Mixtures and Pure Substances

Dry ice is solid carbon dioxide, or CO2. Dry ice may be used as a cooling agent and contains two oxygen atoms bonded to a carbon atom. Dry ice is a ___________________ .

• pure substance

• homogeneous mixture

• heterogeneous mixture

• Suspension

Baking soda is the common name for sodium bicarbonate, or NaHCO3. It can be produced through chemical reactions involving carbon dioxide and sodium hydroxide.

• element

• compound

• homogeneous mixture

• heterogeneous mixture

Methane contains one atom of carbon and four atoms of hydrogen that are chemically bonded. It is a main component of natural gas. Methane is a ___________________ .

• heterogeneous mixture

• homogeneous mixture

• element

• compound

What two types of matter are pure substances?

• elements and solutions

• compounds and mixtures

• elements and compounds

• mixtures and solutions

Mixtures that have the same composition throughout are...

• heterogeneous

• homogeneous

• elements

• pure substances

Chex mix contains pretzels, rye chips and chex cereal. It is an example of a(n)

• solution/ homogeneous mixture

• heterogeneous mixture

• element

• compound

Kool aid contains kool aid powder dissolved in water. What is the solvent in Kool aid?

• water

• Kool aid powder

• color

• sugar

In a ______________, one substance is dissolved in another substance.

• solution

• suspension

• colloid

• pure substance

What does this particulate diagram represent?

• Element

• Compound

• Homogeneous Mixture

• Heterogeneous Mixture

What does this particulate diagram represent?

• Solid Element

• Solid Comound

• gaseous compound

• liquid compound