part 1: classify the following as a substance (s) or a mixture (m).
______1. table salt (nacl) ______2. trail mix ______3. sugar
______4. copper ______5. cereal ______6. concrete

Question

Accepted Answer

To solve this, we recall: A substance (S) has a uniform and definite composition (element or compound). A mixture (M) is a combination of two or more substances with variable composition.

### 1. Table salt (NaCl)
NaCl is a compound with a fixed composition.
Answer: S

### 2. Trail mix
Trail mix has various components (nuts, seeds, etc.) with variable amounts.
Answer: M

### 3. Sugar
Sugar (e.g., sucrose, $ \text{C}_{12}\text{H}_{22}\text{O}_{11} $) has a definite composition.
Answer: S

### 4. Copper
Copper is an element with a uniform composition.
Answer: S

### 5. Cereal
Cereal contains different components (grains, maybe fruits) with variable amounts.
Answer: M

### 6. Concrete
Concrete has cement, sand, gravel, etc., with variable ratios.
Answer: M

Final Answers:
1. S
2. M
3. S
4. S
5. M
6. M

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QUESTION IMAGE

Question

Explanation:

1. Table salt (NaCl)

Answer:

2. Trail mix