How many chlorine (cl) atoms would be in 4 molecules of salt (4 nacl)?
a = 1
b = 2
c = 3
d = 4

an atom that has the same amount of atoms of each element on both sides of the reaction obeys what law?
a = law of conservation of energy
b = law of conservation of mass
c = law of conservation of temperature
d = law of conservation of atoms

if you have 5 grams of product after a chemical reaction, how many grams of reactants did you have at the start of the reaction?
a = 2
b = 3
c = 4
d = 5

in the reaction, al2o3 + 6 hcl → h2o + 2alcl3, what coefficient should be placed in front of h2o to balance the reaction?
a = 1
b = 2
c = 3
d = 6

which one of the following is an element?
a = salt water
b = sugar
c = oxygen
d = chocolate chip cookies

which of the following is an example of a homogeneous mixture?
a = sand at the beach
b = granite
c = fruit salad
d = apple juice

what makes a solution a homogeneous mixture?
a = there is only one component.
b = it is uniform in composition.
c = the mixture has multiple colors.
d = the mixture contains solids and liquids.

in a solution of salt and water, which component is the solute
a = salt
b = water
c = beaker
d = oxygen

which of these can be classified as a pure substance?
a = solution
b = compound
c = heterogeneous mixture
d = homogeneous mixture

the following characteristics describe which of these terms? the substance is not uniform in appearance and each part of the mixture contains a combination of different ingredients in different ratios.
a = heterogeneous mixtures
b = homogeneous mixtures
c = pure substance
d = solution

which one of the following is not a compound?
a = salt
b = sugar
c = water
d = chocolate chip cookies

which one of the following is not a homogeneous mixture?
a = vegetable soup
b = carbonated beverages
c = saline solution
d = brewed tea

what is the difference between a compound and a mixture?
a = a mixture is a pure substance, but a compound is not.
b = a compound is a pure substance, but a mixture is not.
c = mixtures are chemically combined, but compounds are not.
d = you cannot separate mixtures, but you can separate compounds.