Question

multiple choice
identify the choice that best completes the statement or answers the question.

1. which part of the illustration below shows the particles in a heterogeneous mixture?
2. what happens to the energy in a substance when it changes state?

a. it is changed into matter.
b. the energy remains unchanged.
c. it is destroyed.
d. it changes form, but is neither destroyed nor increased.

1. if a mixture is not uniform throughout, it is called

a. homogeneous.
b. heterogeneous.
c. a solution.
d. chemically bonded.

1. a mixture is

a. any group of elements that are chemically bonded to one another.
b. any substance with a uniform composition.
c. a blend of any two or more kinds of matter, as long as each maintains its own unique properties.
d. a combination of pure substances bonded chemically.
short answer

1. the liquid state of matter can be described as
2. what is the definition of a chemical change
3. a state of matter in which a material has no definite shape but has a definite volume is the ____ state.

Explanation:

1. In a heterogeneous mixture, the components are not uniformly distributed. Looking at the illustrations, the one with non - uniform particle distribution is the answer.
2. According to the law of conservation of energy, when a substance changes state, energy changes form (e.g., from potential to kinetic during melting), but the total amount of energy remains the same.
3. By definition, a non - uniform mixture is called a heterogeneous mixture.
4. A mixture is a blend of two or more kinds of matter where each retains its own properties.

For short - answer questions:

1. In the liquid state, particles are close together but can move past one another.
2. A chemical change is a process in which one or more substances are changed into new substances with different chemical properties.
3. The state of matter with no definite shape but definite volume is the liquid state.

Answer:

1. (No options provided in the question for this part, but based on the concept of heterogeneous mixture, the correct illustration should show non - uniform particle distribution)
2. d. It changes form, but is neither destroyed nor increased.
3. b. heterogeneous.
4. c. a blend of any two or more kinds of matter, as long as each maintains its own unique properties.

Short Answer:

1. Particles are close together and can move past one another.
2. A process in which one or more substances are changed into new substances with different chemical properties.
3. liquid