General Chemistry Chapter 1
Classify each statement as an observation, a law, or a theory. If elements are listed in order of increasing mass of their atoms, their chemical reactivity follows a repeating pattern.
Law
Classify each statement as an observation, a law, or a theory. Chlorine is a highly reactive gas
Observation
Classify the property as physical or chemical. Bluish color
Physical
Classify the property as physical or chemical. Gas at room temperature
Physical
Classify the property as physical or chemical. Pungent odor
Physical
Convert 2.735 K to ∘C (average temperature of the universe as measured from background blackbody radiation).
T = -270.42 ∘C C= K - 273.15
Convert 0.00 K to ∘F (coldest temperature possible, also known as absolute zero).
T = -459.67 ∘F The Kelvin and Fahrenheit scales do not have a direct conversion. First convert to ∘C, then convert ∘C to ∘F.
Convert 212 ∘F to ∘C (temperature of boiling water at sea level).
T = 100 ∘C F - 32 / 1.8
Convert 25 ∘C to K (approximate room temperature).
T = 298 K K= C + 273.15
Classify the property as physical or chemical. Colorless
physical
Classify the property as physical or chemical. Liquid at room temperature
physical
Classify the property as physical or chemical. Mixes with water
physical
Classify the property as physical or chemical. density = 0.79 g/mL
physical
Tripartite
consisting of three parts
Classify the property as physical or chemical. Decomposes on exposure to ultraviolet light
Chemical
Classify the property as physical or chemical. Flammable
Chemical
Classify the property as physical or chemical. Very reactive
Chemical
Classify each statement as an observation, a law, or a theory. The reactivity of elements depends on the arrangement of their electrons.
Theory