Question

1. which of the following is a homogeneous mixture?

a) stainless steel
b) trail mix
c) molten iron
d) water
e) none of the above

1. which of the following items is a mixture?

a) water
b) sugar
c) brass
d) helium
e) none of the above

1. which of the following statements is false?

a) matter may be a pure substance or it may be a mixture.
b) mixtures may be composed of two or more elements, two or more compounds, or a combination of both.
c) a mixture may be either homogeneous or heterogeneous.
d) a pure substance may either be an element or a compound.
e) all of the above statements are true.

1. how would you classify raisin bran?

a) mixture-heterogeneous
b) mixture-homogeneous
c) pure substance-compound
d) pure substance-element
e) none of the above

1. a solution is an example of a (an)

a) pure substance
b) compound
c) homogeneous mixture
d) heterogeneous mixture
e) element

1. which of the following items is a physical property?

a) the combustion of gasoline
b) the odor of spearmint gum
c) the corrosive action of acid rain on granite
d) the tarnishing of a copper statue
e) none of the above

1. which of the following statements about physical and chemical changes is false?

a) phase changes are always physical changes.
b) in a physical change, matter does not change its composition.
c) in a chemical change, matter changes its composition.
d) chemical reactions are chemical changes.
e) all of the above statements are true.

Explanation:

Answer:

1. A) stainless steel
2. C) brass
3. E) All of the above statements are true.
4. A) mixture - heterogeneous
5. C) homogeneous mixture
6. B) the odor of spearmint gum
7. E) All of the above statements are true.