Chapter 5, 8th Grade Question Preview (ID: 60584)

Acids And Bases. TEACHERS: click here for quick copy question ID numbers.

A mixture that contains a solvent and at least one solute and has the same properties throughout
a) solution
b) mixture
c) suspension
d) colloid

Some solutes and solvents just aren't compatible.
a) true
b) false
c) sometimes true and sometimes false
d) none of the above

Solution A has 20 g solvent and 1 g solute. Solution B has 20 g solvent and 10 g solute. Which one is more concentrated?
a) Solution B
b) Solution A
c) Both are equally concentrated
d) You can't tell with the information given.

40 gallons of sap is boiled to remove most of the water and become 1 gallon of maple syrup. Which is the concentrated solution?
a) syrup
b) sap
c) they are equally concentrated
d) you can't tell with the info given

A measure of how much solute can dissolve in a solvent at a given temperature
a) solubility
b) solution
c) saturated
d) concentration

Many bases are made of positive ions combined with
a) hydroxide ions
b) hydrogen ions
c) homologous ions
d) positive ions

Solutes raise the ___ of a solution above that of the solvent.
a) boiling poing
b) melting point
c) freezing point
d) sublimation point

Ionic compounds in water conduct electric current.
a) true
b) false
c) sometimes true and sometimes false
d) none of the above

Metals seem to disappear in acids because acids are ___, or wear away other metals.
a) corrosive
b) conglomerate
c) erosive
d) explosive

Carbonates are found in things like
a) seashells
b) bronze
c) gold
d) wood

Citrus fruits are often sour because they contain
a) acids
b) bases
c) alkalines
d) none of the above

A solution forms when particles of the solute ___ each other and become surrounded by solvent particles.
a) separate from
b) join with
c) move closer to
d) none of the above

Which of the following can be solvents?
a) all of the above
b) solids
c) liquids
d) gases

Your solution contains 50 g of water and 2 g of salt. Which is the solute?
a) salt
b) water
c) the salt and water
d) none of the above

A substance registers as 4 on the pH scale. It is
a) an acid
b) a base
c) neutral
d) neither an acid nor a base

After neutralization, the mixture will
a) not be as acidic or basic as the reactants
b) be more acidic or basic as the reactants
c) be the same level of acid or base as the reactants
d) become a very strong base.

In a neutralization reaction, an acid reacts with a base to produce a(n) ___ and water.
a) salt
b) sugar
c) acid
d) base

The universal solvent is
a) water
b) air
c) oxygen
d) hydrogen

The pH scale expresses the concentration of ___ ions in a solution
a) hydrogen
b) hydroxide
c) oxygen
d) carbon dioxide

If you've added so much solute that no more dissolves, you have a
a) saturated solution
b) dilute solution
c) concentrated solution
d) none of the above

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