Mixtures and Compounds

Which two types of matter are pure substances?

• Homogenous mixtures and elements

• Solutions and compounds

• Elements and compounds

• Mixtures and elements

Unlike an element, a(n) __________ may be separated through a physical process like filtration.

• Mixture

• Compound

• Atom

• molecule

Mixtures that have the same composition throughout are _________.

• Heterogeneous

• Homogeneous

• Pure substances

• elements

Which of the following describes a heterogeneous mixture?

• Carbon monoxide, a toxic gas with the chemical formula CO

• Simple syrup, a substance that has two parts sugar to every part of water

• Beach sand, a substance that can contain rocks, shells, metals and other substances distributed unevenly throughout

• Sulfur, a substance with atomic number 16 and the symbol S on the periodic table.

To form brass, copper and zinc combine but do not chemically bond. Brass is a(n) _________.

• Atom

• Element

• Compound

• mixture

Sulfur dioxide is a smelly, toxic gas. It is the elements sulfur and oxygen and cannot be physically separated. Sulfur dioxide is represented by the chemical formula SO₂. Sulfur dioxide is a(n)

• Element

• Compound

• heterogeneous

• solution

Tags

NGSS.MS-PS1-1

Beryllium appears on the periodic table with the symbol Be. It may bond with sulfur to form the compound BeS. Beryllium is a(n)

• Element

• Compound

• Heterogeneous

• solution

Tags

NGSS.MS-PS1-1

Cracker jacks contain peanuts and popcorn. Eve hates peanuts, so she picks out the popcorn and leaves the peanuts in the bowl. Based on this description, cracker jacks are a(n)

• Atom

• Element

• Compound

• Mixture

In the lab, Gregory is using a substance that has the same composition throughout. He separates the substance into a liquid and solid using a physical process. Based on this description, Gregory’s substance is a(n)

• Elements

• Compound

• Heterogeneous

• solution

Lemonade contains lemon juice and sugar dissolved in water. What is the solvent in lemonade?

• Water

• Lemon juice

• Sugar

• There is no solvent in lemonade