Question

chapter 10 test

1. what do we call a heterogeneous mixture in which the particles settle over time?

a. supervision
b. compound
c. solution
d. colloid

1. what do we call the ability of a substance to be bent or shaped?

a. conductivity
b. malleability
c. reactivity
d. suspension

1. dirt in water is an example of what kind of matter?

a. suspension
b. compound
c. solution
d. colloid

1. when we say that a mixture is homogeneous we are saying that it has which of the following characteristics

a. it is made of only one kind of element
b. it appears the same throughout (you cant see different particles)
c. you can see different, distinct materials within it
d. it has a fixed composition,

1. what is one way that compounds and mixtures are alike? what is one

Explanation:

1. A suspension is a heterogeneous mixture where particles settle over time. A supersaturated solution is a homogeneous solution with more solute than normal. A compound is a pure substance. A solution is homogeneous. A colloid has particles that don't settle quickly.
2. Conductivity is about electricity/heat flow. Malleability is bending/shaping. Reactivity is about chemical reactions. Suspension is a type of mixture.
3. Dirt in water: particles settle (suspension). A compound is pure. A solution is homogeneous. A colloid doesn't settle quickly.
4. A homogeneous mixture looks the same throughout. It's not made of one element (mixture has multiple substances). If you see different materials, it's heterogeneous. A fixed composition is for pure substances (elements/compounds), not mixtures.

Answer:

1. a. Suspension
2. b. Malleability
3. a. Suspension
4. b. It appears the same throughout (you can't see different particles)