The Tools Of Chemistry Worksheets With Answer Key Page 8
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9Chapter 1 — Tools of Chemistry
Page 8
1-44. Sodium reacts violently with water to give a gas and an alkaline solution. Is this a
description of a chemical or physical property of sodium?
(a)
chemical
(b)
physical
1-45. Elemental fluorine is a gas with a boiling point of -188 ˚C. The element reacts vigorously
with water. Which of these statements tells us about a chemical property of the element?
(a)
Boiling point.
(b)
Reaction with water.
1-46. You have 25.0 mL of orange, liquid bromine. Which part of this statement refers to
qualitative information?
(a)
25.0 mL
(b)
orange, liquid
1-47. You have a jar of chunky peanut butter. Is this a homogeneous or heterogeneous mixture?
(a)
homogeneous
(b)
heterogeneous
1-48. Which of the following is NOT a unit in the SI system of units?
(a)
kilogram
(b)
second
(c)
inch
(d)
meter
1-49. A beautiful blue copper compound dissolves completely in water. Which statement is
correct?
(a)
The copper compound is the solute and the water is the solvent. The solution is
homogeneous.
(b)
The copper compound is the solvent and the water is the solute. The solution is
homogeneous.
(c)
The copper compound is the solute and the water is the solvent. The solution is
heterogeneous.
(d)
The copper compound is the solvent and the water is the solute. The solution is
heterogeneous.
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