Chemistry - ANS-The study of the composition, structure, properties, and reactions of
matter
Scientific Method - ANS-The process of making
... [Show More] observations, proposing a hypothesis,
testing the hypothesis, and developing a theory that explains a natural event
1. Observation
2. Hypothesis
3. Experimenet
4. Conclusion or theory - ANS-What are the four steps of the scientific method?
Chemical - ANS-A substance that has the same composition and properties wherever it
is found
Experiment - ANS-A procedure that tests the validity of a hypothesis; control group,
experiment group, and variables are used
Hypothesis - ANS-An unverified explanation of a natural phenomenon
Observation - ANS-Information determined by noting and recording a natural
phenomenon
Theory - ANS-An explanation of an observation that has been validated by repeated
experiments that support a hypothesis
Conversion Factor - ANS-A ratio in which the numerator and denominator are quantities
from an equality or given relationship
Density - ANS-The relationship of the mass of an object to its volume, expressed as
g/cm3, g/mL, gL
What is the equation for density? - ANS-d = m/V
Equality - ANS-A relationship between two units that measure the same quantity
Exact number - ANS-A number obtained by counting or definition
Mass - ANS-A measure of the quantity of material in an object
Measured number - ANS-A number obtained when a quantity is determined by using a
measuring device
Metric System - ANS-A system of measurement used by scientists and in most
countries of the world
Prefix - ANS-The part of the name of a metric unit that precedes the base unit and
specifies the size of the measurements; all prefixes are related on a decimal scale
Scientific notation - ANS-A form of writing larger and small numbers using a coefficient
that is greater than 1 but less than 10, followed by a power of 10
meter (m) - ANS-What is the metric unit of length?
1 m = 1.094 yd
1 m = 39.37 in.
1 m = 100 cm
2.54 cm = 1 in. - ANS-What are some common conversions of length?
liter (L) - ANS-What is the metric unit of volume?
1 m3 = 1000 L
1 L = 1000 mL
1 mL = 1m3
1 L = 1.057 qt
946.3 mL = 1 qt - ANS-What are some common conversions of volume?
gram (g) - ANS-What is the metric unit of mass?
1 kg = 1000 g
1 kg = 2.205 lb
453.6 g = 1 lb - ANS-What are some common conversions of mass?
degree Celsius (*C) - ANS-What is the metric unit of temperature?
second (s) - ANS-What is the metric unit of time?
1 day = 24 h
1 h = 60 min
1 min = 60 s - ANS-What are some common conversions of time?
1. All non-zero digits are significant
2. Any zero in between significant figures is significant
3. Any zero that is after the decimal place and has a significant figure somewhere in
front of it, is significant
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