Which of the following represents a hypothesis?
A) Sodium reacts with water to form sodium hydroxide and hydrogen gas.
B) Nitrogen gas is a fairly inert substance.
C) Nickel has a silvery sheen.
D) When a substance combusts, it combines with air.
E) When wood burns, heat is given off.
Correct Answer:
Verified
Q3: Identify a gas.
A) definite volume and definite
Q4: Which of the following statements about the
Q5: Identify a liquid.
A) definite volume and definite
Q6: A substance that can't be chemically broken
Q7: Which of the following statements is TRUE?
A)
Q9: Filtration is
A) a process in which the
Q10: Dalton's Atomic Theory states
A) that all elements
Q11: Identify a solid.
A) definite volume and definite
Q12: Molecules can be described as
A) mixtures of
Q13: Two or more substances in variable proportions,where
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