Questions and All Correct Answers
2026 Updated.
Chemistry definition - Answer The science that seeks to understand what matter does by
studying what atoms and molecules do
virtually everything around you is composed of _________ - Answer chemicals
atoms are bound together to form several different types of ______________ - Answer
molecules
observations - Answer involve measuring or observing some aspect of nature
hypotheses - Answer tentative interpretations of the observations
laws - Answer summarize the results of a large number of observations
theories - Answer are models that explain and give the underlying causes for observations and
laws
scientific method: experimentation - Answer laws, hypotheses, and theories must be tested
and validated by experiments
scientific method - Answer a way of learning that emphasizes observation and
experimentation to produce knowledge
Law of Conservation of Mass - Answer in a chemical reaction, matter is neither created nor
destroyed
Who created the law of conservation of mass? - Answer Lavoisier
scientific theory - Answer A well-tested explanation for a wide range of observations or
experimental results.
Atomic Theory - Answer a theory that states that all matter is composed of tiny particles called
atoms.
, Who created the atomic theory? - Answer John Dalton
uncertainty is indicated by the last __________ ___________ - Answer reported digit
significant numbers - Answer any number that is not a 0, sandwiched 0s, trailing 0s when
there is a decimal place
not significant numbers - Answer leading 0s and trailing 0s at the end of a number without a
decimal place
Sig Fig Multiplication/Division Rule - Answer carry the same number of sig figs as the factor
with the fewest sig figs
Sig Figs: Adding and Subtracting - Answer carry the same number of decimal places as the
quantity carrying the fewest decimal places
unit for length - Answer meter (m)
unit for mass - Answer kilogram (kg)
unit for time - Answer seconds (s)
unit for temperature - Answer Kelvin (K)
Tera (T) - Answer 10^12
Giga (G) - Answer 10^9
Mega (M) - Answer 10^6
kilo (k) - Answer 10^3
hecto (h) - Answer 10^2
deca (da) - Answer 10^1