Which of the following is a physical change?
A) the freezing of water to form ice
B) the burning of paper
C) the mixing of salt and water
D) the reaction of zinc with hydrochloric acid
E) the inability of gold to react with water
Correct Answer:
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Q1: A physical property is the ability of
Q2: Which of the following is a physical
Q3: The scientific method involves:
I.observations
II.generalizations
III.experiments
IV.deduction
V.induction
A)I,III,IV
B)I,II,III
C)I,II,III,IV
D)I,II,III,V
E)I,III,V
Q6: The SI unit of mass is 1
Q7: A chemical change always involves a change
Q8: Which statement is INCORRECT?
A)Natural laws are concise
Q12: The scientific method is used to make
Q15: Choose the INCORRECT statement.
A)A natural law is
Q17: A theory is a model used to
Q20: Systematic errors are consequence of inherent errors
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