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Chemistry
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6. Explain the difference between a heterogeneous mixture and ahomogeneous mixture.

7. When a carton of milk spoils, a chemical transformation hasoccurred. Explain what indicates that this is a chemicaltransformation and not a physical transformation.

8. Give an example of each of the following:

(a) An elemental substance
(b) A compound
(c) A homogeneous mixture
(d) A heterogeneous mixture

9. A glass of fizzing seltzer water is homogeneous mixture.

10. When water is electrolyzed to produce hydrogen gas and oxygengas a _________ transformation has occurred.

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Nelly StrackeLv2
28 Sep 2019
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Related questions

Quiz for chapter 1 problem
1. Classify the following as elemental substances, compounds,homogeneous mixtures, or heterogeneous mixtures:
(a) A glass of ice tea with mixtures (heterogeneous)
(b) A tablespoon of instant ice tea dissolved in water(homogeneous)
(c) A cup of homogenized milk (compounds)
(d) A beaker of liquid mercury (elemental substances)
2. Indicate whether the change described below results in physicaltransformation or chemical transformation.
(a) A block of iron metal is heated until it becomes a liquid.(physical transformation)
(b) An iron car rusts in an open field. (physicaltransformation)
(c) A sample of liquid bromine is converted to vapor. (chemicaltransformation)
3. Complete the following statement:
In a chemical transformation, a_____________ ____________isproduced.
4. Identify the following as elemental substances orcompounds:
(a) Sulfur dioxide (compounds)
(b) Helium gas (compounds)
(c) Ammonia (substances)
(d) Sulfur (substances)
5. Classify each of the following transformations as physical orchemical:
(a) Sublimation (physical)
(b) Burning (chemical)
(c) Fermentation (chemical)
(d) Condensation (physical)

Indicate whether the following samples of matter is a heterogeneous mixture, a homogeneous mixture, a compound, or an element.

a. a blue-colored, single-phase liquid that when boiled away (evaporated) leaves behind a solid residue

b. a "cloudy" liquid that separates into two layers upon standing overnight 

c. a non-uniform, white crystalline substance, part of which dissolved in alcohol and part of which does not dissolve in alcohol

d. a colorless gas that cannot be separated into simpler substances using physical means and that reacts with metal magnesium to produce both magnesium-oxygen compound and a magnesium-nitrogen compound

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