Question

1. what are the three main states of matter?

a. plasma, solid, and liquid
b. gas, plasma, and solid
c. liquid, gas, and plasma
d. solid, liquid, and gas

1. what is a compound?

a. a mixture of different substances
b. a single type of atom
c. two or more elements chemically bonded together
d. substances that can be physically separated

1. which is an example of a heterogeneous mixture?

a. trail mix
b. salt water
c. kool - aid
d. chocolate milk

1. how are electrons arranged in an atom?

a. scattered throughout the nucleus
b. orbiting around the nucleus
c. floating freely in space
d. mixed with neutrons

1. what makes a homogeneous mixture unique?

Explanation:

• For question 5: The three main states of matter are solid, liquid, and gas. Plasma is a fourth - state but not one of the main three.
• For question 6: A compound is formed when two or more elements are chemically bonded together.
• For question 7: A heterogeneous mixture has visibly different parts. Trail mix has different components like nuts, raisins etc. that are distinguishable.
• For question 8: Electrons orbit around the nucleus in an atom.

Answer:

1. D. Solid, liquid, and gas
2. C. Two or more elements chemically bonded together
3. A. Trail mix
4. B. Orbiting around the nucleus