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Chemistry, 02.07.2019 05:30, Darkknighta26
Scientists who always report their observations and results truthfully possess the attitude of
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Chemistry, 21.06.2019 21:30, artemiscrock77041
The reaction q+r2=r2q is found to be first order in r2 and
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Chemistry, 21.06.2019 22:50, rndschopplein
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
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Chemistry, 22.06.2019 04:20, lindseysmith9522
Neils bohr believed that electrons orbited the nucleus in different energy levels, based on strong support from
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