Question

1. both mixtures and compounds are made of two or more different substances mixed together. so which of the following is an accurate statement about the difference between the two?

a. generally speaking, compounds are easier to separate than mixtures.
b. compounds are mixed physically but not chemically.
c. a mixture is two or more substances mixed physically but not chemically.
d. mixtures are pure substances while compounds are not.

1. which of the following shows a mixture?
2. which of the following is the best example of a heterogeneous mixture?

a. lemonade made of water, lemonade powder mix, and sugar.
b. an omelet made of scrambled eggs and cheddar cheese.
c. trail mix made of raisins, peanuts, and chocolate candies.
d. a glass of ice water made of ice cubes and pure water.

Explanation:

Question 1

• Option a: Compounds are harder to separate than mixtures (e.g., via chemical reactions), so this is wrong.
• Option b: Compounds are chemically combined, not just physically, so this is wrong.
• Option c: Mixtures are physically combined (e.g., sand and water), which is correct.
• Option d: Mixtures are not pure substances (they have multiple components), so this is wrong.

• A mixture has different types of particles. In option d, there are two different - looking particle groups (assuming different shapes or arrangements represent different substances), while in a, b, and c, the particles seem more uniform (could be pure substances or homogeneous mixtures).

• A heterogeneous mixture has visibly different parts.
• Option A: Lemonade is a homogeneous mixture (uniform composition).
• Option B: An omelet (after cooking) is more homogeneous (the cheese and eggs blend more).
• Option C: Trail - mix has visibly different components (raisins, peanuts, chocolate candies), which is a heterogeneous mixture.
• Option D: Ice - water (assuming pure water) is a homogeneous mixture (the ice and water are the same substance in different states).

Answer:

c. A mixture is two or more substances mixed physically but not chemically.

Question 2