FUNDAMENTALS OF CHEMISTRY ACTUAL
EXAM PAPER 2026 QUESTIONS WITH
ANSWERS GRADED A+
◍ Chemical.
Answer: A substance that has the same composition and properties wherever
it is found
◍ Chemistry.
Answer: The study of the composition, structure, properties, and reactions of
matter
◍ Conclusion.
Answer: An explanation of an observation that has been validated by
repeated experiments that support a hypothesis
◍ Experiment.
Answer: A procedure that tests the validity of a hypothesis
◍ Hypothesis.
Answer: An unverified explanation of a natural phenomenon
◍ Observation.
Answer: Information determined by noting and recording a natural
phenomenon
◍ Scientific Method.
Answer: The process of making observations, proposing a hypothesis,
testing the hypothesis, and making a conclusion as to the validity of the
hypothesis
,◍ Scientific Notation.
Answer: A form of writing large and small numbers using a coefficient that
is at least 1 but less than 10, followed by a power of 10
◍ Celcius Temperature Scale.
Answer: A temperature scale on which water has a freezing point of 0 C and
a boiling point of 100 C
◍ Centimeter (cm).
Answer: A unit of length in the metric system; there are 2.54 cm in 1 in
◍ Conversion Factor.
Answer: A ratio in which the numerator and denominator are qualities from
an equality or given relationship. For example, the conversion factors for
one metric conversion:
◍ Electrolysis.
Answer: - The decomposition of a substance by an electric current
◍ Cubic centimeter (cc or cm^3).
Answer: The volume of a cube that has 1-cm sides. Basic metric unit of
voume for solids; equal to a mililiter.
◍ Density.
Answer: The relationship of the mass of an object to its volume expressed as
grams per cubic meter (g/cm^3), grams per milliliter (g/mL), or grams per
liter (g/L)
◍ Equality.
Answer: A relationship between two units that measure the same quantity
◍ Exact Number.
Answer: A number obtained by counting or by definition
◍ Gram (g).
Answer: The metric unit used in measurements of mass
◍ Anions.
Answer: - Negative ions
,◍ International System of Units.
Answer: An international system of units that modifies the metric system
◍ Kelvin (K) Temperature Scale.
Answer: A temperature scale on which the lowest possible temperature is 0
K
◍ Kilogram (Kg).
Answer: The SI unit of mass. There are 1,000 grams in a kilogram
◍ Liter (L).
Answer: The metric unit for volume that is slightly larger than a quart
◍ Mass.
Answer: A measure of the quantity of material in an object
◍ Measured Number.
Answer: A number obtained when a quantity is determined by using a
measuring device
◍ Meter (m).
Answer: The metric unit for length that is slightly longer than a yard. The
meter is the SI standard unit of length.
◍ Metric System.
Answer: A system of measurement used by scientists and in most countries
◍ Milliter (mL).
Answer: A metric unit of volume equal to one-thousandth of a liter (0.001
L)
◍ Prefix.
Answer: The part of the name of a metric unit that precedes the base unit
and specifies the size of the measurement. All prefixes are related on a
decimal scale.
◍ Second (s).
Answer: A unit of time used in both the SI and metric systems
, ◍ Significant Figures (SFs).
Answer: The numbers recorded in a measurement
◍ Specific gravity (sp gr).
Answer: A relationship between the density of a substance and the density
of water. sp gr = density of sample/ density of water
◍ Cations.
Answer: - Positive ions
◍ Temperature.
Answer: An indicator of the hotness or coldness of an object
◍ Volume.
Answer: The amount of space occupied by a substance
◍ Boiling.
Answer: The formation of bubbles of gas throughout a liquid
◍ Boiling Point (bp).
Answer: The temperature at which a liquid changes to gas (boils) and gas
changes to liquid (condenses)
◍ Calorie (cal).
Answer: The amount of heat energy that raises the temperature of exactly 1g
of water by exactly 1 C
◍ Change of State.
Answer: The transformation of one state of matter to another for example,
solid to liquid, liquid to solid, liquid to gas
◍ Chemical Change.
Answer: A change during which the original substance is connected into a
new substance that has a different composition and new physical and
chemical properties
◍ Chemical Properties.
Answer: The properties that indicate the ability of a substance to change into