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Straighterline Chemistry Final- deck 1 Exam Questions and Answers
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Straighterline Chemistry Final- deck 1Exam Questions and Answers
What is the term used for findings that are summarized based on a pattern
or trend?
a. Law
b. Hypothesis
c. Theory
d. Phenomena
e. Prediction - -a. Law
-Which of the following is a tentative explanation for a set of observations?
Select one:
a. Law
b. Hypothesis
c. Theory
d. Phenomena
e. Prediction - -b. Hypothesis
-If a liquid contains 60% sugar and 40% water throughout its composition
then what is it called?
Select one:
a. Solute
b. Compound
c. Homogeneous mixture
d. Heterogeneous mixture
e. Solvent - -c. Homogeneous mixture
-Which of the following does not have a uniform composition throughout?
Select one:
a. Element
b. Compound
c. Homogeneous mixture
d. Heterogeneous mixture
e. Solvent - -d. Heterogeneous mixture
-Which one of these represents a physical change?
Select one:
a. Water, when heated, forms steam.
b. Bleach turns hair yellow.
c. Sugar, when heated, becomes brown.
d. Milk turns sour.
e. Apples, when exposed to air, turn brown. - -a. Water, when heated, forms
steam.
, -What terms defines a mass which is exactly equal to 1/12 the mass of one
carbon-12 atom?
Select one:
a. Isotope number
b. Mass number
c. Mass-to-charge ratio
d. Atomic number
e. Atomic mass unit - -e. Atomic mass unit
-C(graphite) and C(diamond) are examples of:
Select one:
a. isotopes of carbon.
b. allotropes of carbon.
c. the law of definite proportions.
d. different carbon ions. - -b. allotropes of carbon.
-The formula for sodium sulfide is
Select one:
a. NaS
b. K2S
c. NaS2
d. Na2S
e. SeS - -d. Na2S
-What is the name of ClO - ion?
Select one:
a. hypochlorite
b. chlorate
c. chlorite
d. perchlorate
e. perchlorite - -a. hypochlorite
-A(n) _________ is a point at which a standing wave has zero amplitude.
Select one:
a. crevice
b. node
c. pit
d. burrow
e. orbital - -b. node
-The Pauli exclusion principle states that no ____ electrons within an atom
can have the same ____ quantum numbers.
Select one:
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