5.What foods are sources of Iodine? a.banana
b.green leafy vegetables
c.nuts
d.seafood and iodized salt
6.Which of the following substances is an element?
a.air
b.iron
c.salt
d.sugar
7.Which of the following is an example of a pure substance?
a.beer
b.ethyl alcohol
c.halo-halo
d.silver spoon
8.Which of the following is NOT a factor that will affect how fast solids dissolve in liquids?
a.particle size
b.size of container
c.stirring
d.temperature
9.What is meant by concentration of a solution?
a.it is the quantity of solvent in solute.
b.it is the quantity of gas dissolved in a liquid.
c.it is the quantity of solute in a given solvent.
d.it is a unit to measure concentration of solute.
10.Maria was tasked by her teacher to observe how fast sugar dissolves in cold and in hot water.Which will be Maria's observation?
a.sugar dissolves faster in hot water.
b.sugar dissolves faster in cold water.
c.sugar will NOT dissolves in hot and cold water.
d.sugar will dissolve in hot and cold water at the same time.
b.green leafy vegetables
c.nuts
d.seafood and iodized salt
6.Which of the following substances is an element?
a.air
b.iron
c.salt
d.sugar
7.Which of the following is an example of a pure substance?
a.beer
b.ethyl alcohol
c.halo-halo
d.silver spoon
8.Which of the following is NOT a factor that will affect how fast solids dissolve in liquids?
a.particle size
b.size of container
c.stirring
d.temperature
9.What is meant by concentration of a solution?
a.it is the quantity of solvent in solute.
b.it is the quantity of gas dissolved in a liquid.
c.it is the quantity of solute in a given solvent.
d.it is a unit to measure concentration of solute.
10.Maria was tasked by her teacher to observe how fast sugar dissolves in cold and in hot water.Which will be Maria's observation?
a.sugar dissolves faster in hot water.
b.sugar dissolves faster in cold water.
c.sugar will NOT dissolves in hot and cold water.
d.sugar will dissolve in hot and cold water at the same time.
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