Question 1 unsaved
each of the following are descriptions of physical properties except

question 1 options:

c. flammability

d. density

a. color

b. mass

question 2 (10 points) question 2 unsaved
in the phase of matter, atoms or molecules are held in a rigid structure. they are free to vibrate but cannot move around.

question 2 options:

a. gas

b. solid

c. plasma

d. liquid

question 3 (10 points) question 3 unsaved
all of the following are evidence that a chemical reaction has occurred except

question 3 options:

a. color change

b. formation of a precipitate

c. bubbles of gas

d. all of the above are evidence of a chemical reaction

question 4 (10 points) question 4 unsaved
an example of a homogeneous mixtures are vegetable soup and chocolate chip cookies.

question 4 options:
true
false
question 5 (10 points) question 5 unsaved
which of the following is an example of a pure substance?

question 5 options:

a. air

b. salt water

c. granite

d. aluminum

question 6 (10 points) question 6 unsaved
the proper iupac naming convention for the compound symbol 'ki' is

question 6 options:

a. potassium iodide

b. barium sulfide

c. potassium iodate

d. barium iodine

question 7 (10 points) question 7 unsaved
the 'law of conservation of matter' states that the mass of the products will always be more than the mass of the reactants within a chemical reaction.

question 7 options:
true
false
question 8 (10 points) question 8 unsaved
the following reaction is an example of

na + kcl → k + nacl

question 8 options:

a. single replacement

b. double replacement

c. decomposition

d. combination

question 9 (10 points) question 9 unsaved
michelle wants to quickly dissolve powdered drink mix into a pitcher of water. which is not a way she could increase the rate of dissolution?

question 9 options:

a. heating the mixture

b. stirring the mixture

c. breaking up the solute into smaller pieces

d. adding more powdered drink mix

question 10 (10 points) question 10 unsaved
a student determines that a piece of an unknown material has a mass of 5.854 g and a volume of 7.57 cm3. what is the density of the material?

question 10 options:

a. 1.30 g/cm3

b. 0.39 g/cm3

c. 1.55 g/cm3

d. 0.77 g/cm3