Pure substance or mixture?
Eleven multi-part examples
questions only

Pure substance or mixture - 20 single-part examples

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Example #1: Classify each example as either a pure substance (an element or a compound) or mixture (heterogeneous or homogeneous).

(a) table salt   (b) aluminum   (c) NaCl   (d) magnesium   (e) powdered orange drink
(f) table sugar   (g) tap water   (h) gold   (i) baking soda   (j) chocolate chip cookie

Example #2: Which of the following would best be described as a mixture? Is it heterogeneous or homogeneous?

(a) dry ice   (b) table sugar   (c) diamond   (d) marble stone   (e) liquid nitrogen   (f) carbon

Example #3: Identify each example as a compound, element, or mixture. For the latter choice, identify as homogeneous or heterogeneous

(a) silver   (b) Gatorade   (c) lead   (d) sugar water   (e) potassium iodide
(f) tacos   (g) apple pie   (h) brass   (i) bronze   (j) hydrogen peroxide

Example #4: Identify each example as a pure substance (compound or element) or a mixture. For the latter choice, identify as homogeneous or heterogeneous

(a) steam   (b) gasoline   (c) toothpaste   (d) rubbing alcohol   (e) pencil lead
(f) iron block   (g) dry ice   (h) graphite   (i) baking powder   (j) copper wire

Example #5: Identify as element, compound, heterogeneous mixture or homogeneous mixture

(a) unhomogenized whole milk   (b) fat-free milk   (c) Raisin Bran cereal with milk
(d) homogenized whole milk   (e) sour milk   (f) Raisin Bran cereal without milk

Example #6: Identify as element, compound, heterogeneous mixture or homogeneous mixture

(a) Dr Pepper   (b) neon gas   (c) mercury in a barometer   (d) vinegar and oil salad dressing
(e) caffeine   (f) chlorine gas   (g) vegetable soup    (h) salad (lettuce, tomatoes, croutons, ranch dressing)

Example #7: Identify as element, compound, heterogeneous mixture or homogeneous mixture

(a) rust   (b) dirty water   (c) blood   (d) spaghetti sauce
(e) ice   (f) sandy water   (g) mud    (h) 14-karat gold chain   (i) the Earth's atmosphere

Example #8: Identify the following as properties of mixtures, compounds, or elements.

(a) the components maintain their own properties    (b) is difficult to separate
(c) the smallest particle is called an atom    (d) an example is osmium
(e) the smallest particle is called a molecule    (f) an example is water
(g) can be homogeneous or heterogeneous    (h) can be made in any proportion

Example #9: Identify as a homogeneous mixture, a heterogeneous mixture, or neither.

(a) glucose dissolved in water    (b) coffee    (c) salt water    (d) brass (Cu + Zn)
(e) oil and water mixture    (f) book    (g) argon gas    (h) liquid mercury
(i) hydrogen gas    (j) tree    (k) sawdust    (ℓ) pure carbon

Example #10: Identify each of these:

(a) vinegar and water    (b) milk    (c) oil and vinegar    (d) gasoline    (e) concrete
(f) iron filings    (g) blood    (h) plastic wrap    (i) sugar    (j) pickle relish
(k) fruit cocktail    (ℓ) steel    (m) granola bar    (n) Jell-O®    (o) chocolate chip cookie dough

as one (or more) of these:

(1) pure substance    (2) mixture    (3) compound
(4) elements    (5) atom    (6) molecule

Also, identify any mixtures as homogeneous or heterogeneous.

Example #11: Classify the following as solution, colloid or suspension.

(a) Glue    (b) Milk    (c) Mayonnaise    (d) Fish sauce
(e) Paint    (f) Syrup    (g) Blueberry jam    (h) Rubbing alcohol

Pure substance or mixture - 20 single-part examples

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