Chemistry Review Question Preview (ID: 15934)
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All of the following are examples of acids EXCEPT
a) orange juice.
b) soda pop.
c) window cleaner.
d) coffee.
Which of the following is a base?
a) Tea
b) Mouthwash
c) Distilled water
d) Lemon juice
On the Periodic Table, elements in the same family
a) are in the same row.
b) are on opposite sides of the table.
c) are spaced apart.
d) are in the same column.
The elements that make the stair steps on the Periodic Table are all
a) metals.
b) metalloids.
c) nonmetals.
d) acids.
On the Periodic Table, nonmetals are located
a) on the right.
b) on the left.
c) in the middle.
d) on the right and the left.
A substance with a pH of 2 is
a) a base.
b) a neutral.
c) an acid.
d) a gas.
The property of metalloids which makes them useful in computer chips is their
a) brittle structure.
b) varying ability to conduct electricity.
c) somewhat reactive nature.
d) hardness.
The periodic table generally does NOT include the element’s
a) atomic number.
b) chemical symbol.
c) number of isotopes.
d) atomic mass.
The chemical properties of elements are said to be periodic because in each succeeding row of the periodic table, these properties
a) do not change.
b) repeat.
c) never repeat.
d) occur in reverse order.
Dmitri Mendeleev found there was a pattern to the properties when the elements were arranged in order of increasing
a) atomic number.
b) atomic mass.
c) melting point.
d) boiling point.
During a change of state, such as melting or freezing, a substance’s temperature
a) increases.
b) decreases.
c) remains constant.
d) increases during melting and decreases during freezing.
Water is an example of
a) an element.
b) a homogeneous mixture.
c) a compound.
d) a heterogeneous mixture.
Density relates the mass of a material to the material’s
a) temperature.
b) volume.
c) weight.
d) length.
New substances are always formed when matter undergoes a
a) change in shape.
b) physical change.
c) change in temperature.
d) chemical change.
The ability to dissolve in water and to conduct electricity are examples of
a) physical properties.
b) chemical changes.
c) chemical properties.
d) chemical bonding.
A chemical change is a change in which the substance
a) changes shape but remains the same substance.
b) changes state but remains the same substance.
c) changes into a different substance with different properties.
d) changes by being crushed, chopped or dissolved.
A salad mixture in which you can see the different parts is a
a) homogeneous mixture.
b) chemical mixture.
c) heterogeneous mixture.
d) compound mixture.
A physical change is a change in which the substance
a) changes shape or state, but remains the same substance.
b) changes into a different substance.
c) changes into a substance with different properties.
d) changes by burning or combustion.
A pure substance that cannot be broken down into any other substance by chemical or physical means is called a(n)
a) compound.
b) molecule.
c) homogeneous mixture.
d) element.
Hardness, temperature, color, size, and smoothness are all
a) states of matter.
b) physical properties of matter.
c) chemical properties of matter.
d) used to describe elements but not compounds.
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