2.2

. You have a mixture of potassium chloride, water, and olive oil. How would you separate these materials from one another?

Allow the oil to separate from the potassium chloride- water solution and pour it off. Then distill off the water.

Antimony has the following chemical symbol: a. Au b. Ag c. Sb d. Sn

Sb

Which of the following is a homogeneous mixture? a. crunchy peanut butter b. pepperoni and mushroom pizza c. a glass of root beer d. macaroni and cheese

a glass of root beer

Identify each of the following as either a homogeneous or a heterogeneous mixture. a. motor oil _______________ b. sand __________________ c. sawdust _________________ d. milk __________________

a. homogeneous b. heterogeneous c. heterogeneous d. homogeneous

Classify each of the following as either a mixture or a pure substance: a. orange juice ___________ b. paper ____________ c. nitrogen _______________ d. blood _________________

a. mixture b. mixture c. pure substance d. mixture

One of the following is not a property of a mixture a. always has the same composition b. is a physical blend of two or more substances c. each component retains its own identity d. can be separated into components

always has the same composition

Would you rather have jewelry made of argentum or natrium? ____________

argentum

Only one of the following is not a characteristic of a compound a. composed of two or more elements b. cannot be broken down into simpler substances c. an undergo chemical changes d. elements are combined in fixed proportions

cannot be broken down into simpler substances

Only one of the following is a characteristic of a heterogeneous mixture a. composition is uniform throughout the mixture b. contains two or more phases c. is a pure substance d. the mixture composition is always the same

contains two or more phases

The symbol Cu designates the element a. copper b. lead c. mercury d. cobalt

copper

True or False: A specific chemical symbol can be used to designate more than one element

false

True or False: Distillation separates materials based on melting point.

false

True or False: Hot water is used to cool a distillation column.

false

True or False: Oil and water always mix evenly

false

True or False: Sodium chloride is a mixture of two elements.

false

True or False: The symbol Fe is used to represent the element lead.

false

The best way to separate lead pellets from ginger ale is a. hand-pick all the pellets b. distillation c. filtration d. melt the lead

filtration

The two elements found in a mixture of aurum and plumbum are ________________ and _______________.

gold, lead

A phase has all of the following characteristics except one a. uniform composition b. properties are the same throughout c. is always a pure substance d. can be a gas or a liquid

is always a pure substance

Which of the following is a pure substance a. oxygen b. air c. salt water d. maple syrup

oxygen

Distillation could not be used to separate one of the following: a. rubbing alcohol and water b. motor oil and brake fluid c. sand and gold d. gasoline fractions

sand and gold

The Latin name for tin is a. natrium b. kalium c. stibium d. stannum

stannum

True or False: A chemical symbol for an element can have one or two letters.

true

True or False: A heterogeneous mixture consists of two or more phases

true

True or False: A mixture can have more than two components.

true

True or False: The chemical symbol for potassium is K.

true