Question

question 7
fill in the blank.
in the gas state, a substance will have a(n) ______ volume.
select one:
a. mass
b. blended
c. solid
d. indefinite

question 8
fill in the blank.
in a compound the elements are ______ together, whereas in a mixture the substances are blended together.
select one:
a. observed
b. blended
c. bonded
d. freezing

question 9
is a taco an element, a heterogeneous mixture, a compound, or a homogeneous mixture?
select one:
a. element.
b. heterogeneous mixture.
c. compound.
d. homogeneous mixture.

Explanation:

Question 7:

Gases have no fixed volume; they expand to fill their container, so their volume is indefinite.

Question 8:

Compounds form when elements are chemically bonded, while mixtures have substances physically blended.

Question 9:

A taco has distinct, separate components (shell, meat, veggies, etc.) that are not uniformly mixed, so it is a heterogeneous mixture.

Answer:

1. d. Indefinite
2. c. Bonded
3. b. Heterogeneous mixture.