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WorksheetsMixtures Exam Review
Total questions: 25
Worksheet time: 13mins
Atoms of different elements are least evenly distributed in which type of matter?
a solution
a compound
a homogeneous mixture
a heterogeneous mixture
Which of the following is a substance?
granite
salt
blood
air
How do substances and mixtures differ?
the composition of one is always the same, and the composition of the other varies
one contains only one type of atom, and the other contains two or more
one is always homogeneous, and the other is always heterogeneous
one contains one type of molecule, and the other contains two types
A mixture can also be called a solution in which case?
when it contains an insoluble substance
when it is heterogeneous
when it is homogeneous
when it contains two types of substances
A 1-liter bottle full of a solution is labeled 70% ethanol. What does it most likely contain?
350 mL water and 350 mL ethanol
300 mL water and 700 mL ethanol
700 mL water and 300 mL ethanol
1000 mL of ethanol and nothing else
Which dissolves most easily in water?
polar compounds
nonpolar compounds
both polar and nonpolar compounds
neither polar nor nonpolar compounds
What is the order of the substances in this table from least soluble in water to most soluble in water?
CO2, H3BO3, K2SO4
H3BO3, CO2, K2SO4
K2SO4, H3BO3, CO2
K2SO4, CO2, H3BO3
What do hydronium and hydroxide ions have in common?
the type of substances that produce them when dissolved in water
the pH range at which they are most common
the number of hydrogen atoms in one molecule
the elements they are made of
How would you raise the pH of a solution?
add water
add a pH indicator
add an acid
add a base
Windex has a pH value of 10.5. Which ions are most common in Windex?
hydroxide ions
hydrogen ions
hydronium ions
oxygen ions
Matter that has fixed composition is a __________.
solid
mixture
solution
substance
Which of the following is a solution?
chlorine
salt water
muddy water
milk
A mixture in which the substances are not mixed evenly is called __________.
homogeneous
heterogeneous
a solution
precipitated
A(n) __________ is made of two or more elements chemically combined in fixed ratios.
atom
solution
mixture
compound
Which are combinations of substances that can be separated by physical processes?
mixtures
elements
compounds
atoms
Why is water sometimes called the universal solvent?
because all living things require water
because water is found all over the planet
because many different chemicals can dissolve in water
because in nature, water exists as solid, liquid, and gas
Which is the substance being dissolved in a solution?
the solute
the solvent
the insolvent
the substrate
Nonpolar molecules do not have __________.
double bonds
triple bonds
covalent bonds
unbalanced charges
In Earth's atmosphere, which gas is the solvent?
nitrogen
oxygen
argon
carbon dioxide
Which are substances that release hydronium ions?
acids
bases
solvents
solutes
Which are substances that release hydroxide ions?
acids
bases
solvents
solutes
A solution having which of the following pH values is the most acidic?
14
7
5
1
How is pH related to the concentration of hydronium ions in a solution?
identically
positively
inversely
not at all
Which is shown here?
a hydronium ion
a hydroxide ion
a water molecule
a base
A solution that contains all the solute it can hold at a given temperature is __________.
unsaturated
saturated
supersaturated
soluble
