Question

name ______ chemistry i worksheet classification of matter and changes instructions: write e in the blank if the material is heterogeneous or o if it is homogeneous. 1. wood 2. freshly - brewed black coffee 3. water 4. lucky charms® 5. salt 6. dirt 7. sausage - and - mushroom pizza 8. air 9. milk 10. gold instructions: classify each of the following as an elemente, a compoundc, or a mixturem.

Explanation:

Part 1: Classify as Heterogeneous (E) or Homogeneous (O)

1. Wood: It has different components (e.g., fibers, lignin) not uniformly distributed. So, E.
2. Freshly - brewed black coffee: The coffee solutes are uniformly distributed in water. So, O.
3. Water: Pure water is a homogeneous substance (if we consider it without impurities, but even with some dissolved gases, it's relatively homogeneous at a macro level). So, O.
4. Lucky Charms®: It has different cereal pieces, marshmallows, etc., which are not uniformly distributed. So, E.
5. Dirt: Contains various particles (sand, clay, organic matter) not uniformly distributed. So, E.
6. Sausage - and - mushroom pizza: Has different toppings and dough components not uniformly distributed. So, E.
7. Air: A mixture of gases (nitrogen, oxygen, etc.) that are uniformly distributed. So, O.
8. Milk: Even though it has fat globules, at a macro level (before separation), it appears homogeneous. So, O (note: it is a colloid, but for the purpose of this simple classification, we can consider it homogeneous).

Part 2: Classify as Element (E), Compound (C), or Mixture (M)

1. Salt (assuming NaCl): Made up of sodium and chlorine atoms in a fixed ratio, so it is a compound (C).
2. Gold: A pure substance made up of only gold atoms, so it is an element (E).

Final Answers (Filling the Blanks)

Heterogeneous (E) or Homogeneous (O)

1. Wood: E
2. Freshly - brewed black coffee: O
3. Water: O
4. Lucky Charms®: E
5. Dirt: E
6. Sausage - and - mushroom pizza: E
7. Air: O
8. Milk: O

Element (E), Compound (C), or Mixture (M)

1. Salt: C
2. Gold: E

Answer:

Part 1: Classify as Heterogeneous (E) or Homogeneous (O)

1. Wood: It has different components (e.g., fibers, lignin) not uniformly distributed. So, E.
2. Freshly - brewed black coffee: The coffee solutes are uniformly distributed in water. So, O.
3. Water: Pure water is a homogeneous substance (if we consider it without impurities, but even with some dissolved gases, it's relatively homogeneous at a macro level). So, O.
4. Lucky Charms®: It has different cereal pieces, marshmallows, etc., which are not uniformly distributed. So, E.
5. Dirt: Contains various particles (sand, clay, organic matter) not uniformly distributed. So, E.
6. Sausage - and - mushroom pizza: Has different toppings and dough components not uniformly distributed. So, E.
7. Air: A mixture of gases (nitrogen, oxygen, etc.) that are uniformly distributed. So, O.
8. Milk: Even though it has fat globules, at a macro level (before separation), it appears homogeneous. So, O (note: it is a colloid, but for the purpose of this simple classification, we can consider it homogeneous).

Part 2: Classify as Element (E), Compound (C), or Mixture (M)

1. Salt (assuming NaCl): Made up of sodium and chlorine atoms in a fixed ratio, so it is a compound (C).
2. Gold: A pure substance made up of only gold atoms, so it is an element (E).

Final Answers (Filling the Blanks)

Heterogeneous (E) or Homogeneous (O)

1. Wood: E
2. Freshly - brewed black coffee: O
3. Water: O
4. Lucky Charms®: E
5. Dirt: E
6. Sausage - and - mushroom pizza: E
7. Air: O
8. Milk: O

Element (E), Compound (C), or Mixture (M)

1. Salt: C
2. Gold: E