Concept explainers
(a)
Interpretation:
Whether the phenomenon of baking soda fizzing in vinegar is a physical or a chemical change is to be stated.
Concept introduction:
The phenomenon in which matter is rearranged without losing its identity is known as a physical change. The phenomenon in which matter changes its form and loses its identity is known as a chemical change. A chemical change results from a
(b)
Interpretation:
Whether the phenomenon of vinegar and oil separating into two layers is a physical or a chemical change is to be stated.
Concept introduction:
The phenomenon in which matter is rearranged without losing its identity is known as a physical change. The phenomenon in which matter changes its form and loses its identity is known as a chemical change. A chemical change results from a chemical reaction, while a physical change results when matter changes forms, but not its chemical identity.
(c)
Interpretation:
Whether the phenomenon of heat released by flaming wood log is a physical or a chemical change is to be stated.
Concept introduction:
The phenomenon in which matter is rearranged without losing its identity is known as a physical change. The phenomenon in which matter changes its form and loses its identity is known as a chemical change. A chemical change results from a chemical reaction, while a physical change results when matter changes forms, but not its chemical identity.
(d)
Interpretation:
Whether the phenomenon of a helium balloon decreasing in size is a physical or a chemical change is to be stated.
Concept introduction:
The phenomenon in which matter is rearranged without losing its identity is known as a physical change. The phenomenon in which matter changes its form and loses its identity is known as a chemical change. A chemical change results from a chemical reaction, while a physical change results when matter changes forms, but not its chemical identity.
Want to see the full answer?
Check out a sample textbook solutionChapter 3 Solutions
Introductory Chemistry: Concepts and Critical Thinking (8th Edition)
- Using spheres to represent individual atoms, sketch particulate illustrations of a substance as it is heated from the solid to the liquid and to the gaseous state.arrow_forwardaIs the process of boiling water exothermic or endothermic with respect to the water? bA charged object is moved closer to another object that has the same charge. The energy of the system changes. Is it a change in kinetic energy or potential energy? Is the energy changes an increase or a decrease?arrow_forwardWhich of the following are elements, and which are compounds? a NaOH; b BaCl2; c He; d Ag; e Fe2O3.arrow_forward
- State whether the following properties of matter arephysical or chemical.(a) An iron nail is attracted to a magnet.(b) A piece of paper spontaneously ignites when itstemperature reaches 451 °F.(c) A bronze statue develops a green coating (patina)over time.(d) A block of wood floats on water.arrow_forwardClassify each property as physical or chemical. (a) the tendency of copper to turn green when exposed to air(b) the tendency of automobile paint to dull over time(c) the tendency of gasoline to evaporate quickly when spilled(d) the low mass (for a given volume) of aluminum relative to other metalsarrow_forwardClassify the following as a physical property or a chemical property. (a) Copper metal has a red-orange metallic luster. (b) Copper metal has a density of 8.94 g/cm3 (c) Copper metal and chlorine gas produce CuCl2arrow_forward
- Classify each property as physical or chemical. (a) the tendency of silver to tarnish(b) the shine of chrome(c) the color of gold(d) the flammability of propane gasarrow_forwardClassify each of the following changes as physical or chemical: (a)condensation of steam(b) burning of gasoline(c) souring of milk(d) dissolving of sugar in water(e) melting of gold (f) coal burning(g) ice melting(h) mixing chocolate syrup with milk(h)explosion of a firecracker(j)magnetizing of a screwdriverarrow_forwardClassify each change as physical or chemical. (a) A balloon filled with hydrogen gas explodes upon contactwith a spark.(b) The liquid propane in a barbecue evaporates away becausesomeone left the valve open.(c) The liquid propane in a barbecue ignites upon contactwith a spark.(d) Copper metal turns green on exposure to air andwater.arrow_forward
- Classify each of the following changes as physical or chemical:(a) condensation of steam(b) burning of gasoline(c) souring of milk(d) dissolving of sugar in water(e) melting of goldarrow_forwardDefine physical change and chemical change. State which type of change occurs in each of the following statements: (a) Passing an electric current through molten magnesium chloride yields molten magnesium and gaseous chlorine. (b) The iron in discarded automobiles slowly forms reddish brown, crumbly rust.arrow_forwardDefine physical changeand chemical change.State which type of change occurs in each of the following statements:(a) Passing an electric current through molten magnesium chlo-ride yields molten magnesium and gaseous chlorine.(b) The iron in discarded automobiles slowly forms reddishbrown, crumbly rust.arrow_forward
- Introductory Chemistry: An Active Learning Approa...ChemistryISBN:9781305079250Author:Mark S. Cracolice, Ed PetersPublisher:Cengage Learning