section 2
short answer
answer the following questions in the space provided.
1. classify each of the following as a homogeneous or heterogeneous substance.
matter
a. iron ore
b. quartz
c. granite
d. energy drink
e. oil-and-vinegar salad dressing
f. salt
g. rainwater
h. nitrogen

Question

section 2
short answer
answer the following questions in the space provided.
1. classify each of the following as a homogeneous or heterogeneous substance.
matter
 a. iron ore
 b. quartz
 c. granite
 d. energy drink
 e. oil-and-vinegar salad dressing
 f. salt
 g. rainwater
 h. nitrogen

Accepted Answer

### a. iron ore
# Brief Explanations:
Iron ore has different components (like iron minerals and gangue) not uniformly distributed, so it's heterogeneous.
# Answer:
Heterogeneous

### b. quartz
# Brief Explanations:
Quartz is a pure mineral (silicon dioxide) with uniform composition, so it's homogeneous.
# Answer:
Homogeneous

### c. granite
# Brief Explanations:
Granite has minerals (quartz, feldspar, mica) with distinct regions, so it's heterogeneous.
# Answer:
Heterogeneous

### d. energy drink
# Brief Explanations:
Energy drink has dissolved components (sugars, caffeine, etc.) uniformly mixed, so it's homogeneous.
# Answer:
Homogeneous

### e. oil - and - vinegar salad dressing
# Brief Explanations:
Oil and vinegar don't mix uniformly; layers or distinct phases exist, so it's heterogeneous.
# Answer:
Heterogeneous

### f. salt
# Brief Explanations:
Salt (like NaCl) has uniform composition throughout, so it's homogeneous.
# Answer:
Homogeneous

### g. rainwater
# Brief Explanations:
Rainwater has dissolved gases and impurities uniformly distributed, so it's homogeneous (assuming no large particles).
# Answer:
Homogeneous

### h. nitrogen
# Brief Explanations:
Nitrogen is a pure element, so its composition is uniform, making it homogeneous.
# Answer:
Homogeneous

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QUESTION IMAGE

Question

Explanation:

a. iron ore

Answer:

b. quartz