With Detailed Questions And Correct
Answers||Latest Exam 2026-
2027||Already Graded+
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:
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
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
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 a new substance
Compound -ANSWER A pure substance consisting of two or more elements with a
definite composition, that can be broken down into simpler substances only by chemical
methods
Condensation -ANSWER The change of state from a gas to a liquid
Cooling Curve -ANSWER A diagram that illustrates temperature changes and changes
of state for a substance as heat is removed
Deposition -ANSWER The change of a gas directly into a solid; the reverse of
sublimation
Element -ANSWER A pure substance containing only one type of matter, which cannot
be broken down by chemical methods
Energy -ANSWER The ability to do work
Energy Value -ANSWER The kilocalories (or kilojoules) obtained per gram of the food
types: carbohydrates, fat, and protein
Evaporation -ANSWER The formation of a gas (vapor) by the escape of high-energy
molecules from the surface of a liquid
Freezing -ANSWER The change of state from a liquid to solid