Answers: 2
Chemistry, 21.06.2019 22:50
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
Answers: 1
Chemistry, 22.06.2019 09:00
What is the percentage composition of carbon in the compound ch4
Answers: 1
Chemistry, 22.06.2019 09:40
How many grams of aluminum will there be in 98g of al2o3?
Answers: 1
Chemistry, 22.06.2019 12:00
What is the subscript for oxygen in its molecular formula
Answers: 1
Most covalently bonded substances consist of individual separate molecules. Each individual molecule...
Mathematics, 24.09.2021 16:50
Computers and Technology, 24.09.2021 16:50
Social Studies, 24.09.2021 16:50
Mathematics, 24.09.2021 17:00
Mathematics, 24.09.2021 17:00
Mathematics, 24.09.2021 17:00
Mathematics, 24.09.2021 17:00
Mathematics, 24.09.2021 17:00
English, 24.09.2021 17:00
Chemistry, 24.09.2021 17:00
SAT, 24.09.2021 17:00