Elements, Compounds & Mixtures Test Review

A pure substance...

• is an element or a compound
• is an element or a mixture
• is a compound or a mixture
• is a mixture

A substance made up of two or more chemically combined elements is

• an element

• mixture

• compound

• solution

A substance that cannot be broken down into any other substance by ordinary chemical means is called —

• molecule

• mixture

• element

• compound

Two or more physically combined substances form —

• a compoud
• an acid
• an element
• a mixture

NaHCO₃ is an example of —

• an abbreviation
• a compound
• a mixture
• an element

A substance made of only one type of atom is called —

• an element
• a mixture
• a compound
• a salt

Which of these substances is an example of a solution?

• a salad

• iced tea

• mercury

• concrete

Which of the following is a way in which elements and compounds are similar?

• Elements and compounds are pure substances.
• Elements and compounds are both made up of different kinds of atoms.
• Elements and compounds can both be broken down by physical means.
• Elements and compounds are listed on the periodic table.

What is an example of an element?

• Oxygen
• Pure water
• Air
• Table salt

Two or more substances in the same place but NOT chemically combined or in a specific ratio is called —

• a compound 
• a pure substance
• an element
• a mixture