Which statement best describes why a chemical property change is different from a physical change? A. A chemical change results in a different state of matter; and a physical change results in a new substance being formed.

B. A chemical change results in a new substance being formed; whereas, a physical change will result in a different state of matter.

C. A chemical change is used by scientists to create new substances, and a physical change happens naturally.

D. A chemical change is used to identify characteristics of a substance, and a physical change identifies the behavior of a substance when in a reaction.

How is the composition of a meteorite relevant to finding out the composition of earth's core?

Achemical reaction (also known as a chemical change) produces substances that are chemically different from the starting materials. an example of a chemical reaction is the formation of water from hydrogen and oxygen gas.in a physical change, a substance changes its physical appearance but not its chemical identity. an example of physical change is the formation of liquid water from solid water, a familiar process called melting. physically, liquid water looks very different from solid water (ice) but the chemical identity, water, is the same for both. which of following changes that affect the composition of our atmosphere involve physical changes and which involve chemical reactions? oxygen gas changes to ozone during thunderstorms carbon dioxide is produced by the combustion of gasoline in an automobile engine. when coal, oil, and natural gas are decomposed in landsills they produce methane gas. freezing rain develops when a warm air mass overrides a cold air mass. fog forms from water vapor when the temperature drops below the dew point

Gwhich r group would most likely be found in a hydrophobic area of the tertiary structure of a globular protein? which r group would most likely be found in a hydrophobic area of the tertiary structure of a globular protein? −ch2−oh −ch2−o||c−nh2 −ch2−coo− −ch2−ch2−ch2−ch2−n+h3