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Biology, 21.06.2019 16:00, caitlin89
Elements and compounds are pure substances that cannot be broken down physically into a simpler substance. a physical change doesn’t break the bonds between atoms of a substance or form new ones. compounds can be broken down by a chemical change. a chemical change breaks chemical bonds and/or forms new ones between atoms of a substance. what simple substance would a compound break into? the basic elements that make it up! for example, if you passed a very strong electric current through water you’d break the chemical bonds in water and be left with oxygen and hydrogen. which of the following is an example of a chemical change? a separating water into different glasses b breaking frozen ice cubes with a hammer c running an electric current through water d boiling water to evaporate it on a stove
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Biology, 21.06.2019 17:30, foreverisabel
Which of the following systems in absorbing oxygen and releases carbon dioxide
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Biology, 21.06.2019 23:00, linag969p9xeno
Adigestive system that is a series of tubes beginning at the mouth and ending at the anus is a digestive system.
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Biology, 22.06.2019 06:20, shelbyp2003
You see a white marker with an orange circle and black lettering. what does this marker tell you
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