Chemistry
Chemistry, 03.07.2019 04:30, lucy773

During a chemical reaction, the atom of the substances are to form new or different substances

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Chemistry, 15.07.2019 05:40, kl8774
When a covalent or an ionic bond is formed a chemical change has occurred. which of these is not associated with a chemical change? a. the atoms of the substances produced have been rearranged. b. the substances produced are identical to the substances that reacted except that they're isomers. c. the total mass of the reacting substances is the same as the total mass of the substances produced by the reaction. d. the chemical properties of the substances produced by the reaction are different from those of the reacting substances.
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Chemistry, 27.07.2019 22:00, saltytaetae
What is chemical equation a.substance present after a reaction b.reaction in which substances combine to form a more complex compoud c.principle that states that matter if not created of destroyed during a chemical rection d. reaction in which one element replaces another in a compoud e.substance present before a reaction f.number telling how many molecules of a substance are involved in a chemical reaction g.reaction in which compounds are broken down into simpler substances h.uses symbols and formulas to show chemical reactions.
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Biology, 04.10.2019 21:00, harleymichaelbp74jsq
Which of the following is not an indication of a chemical reaction? two substances burst into flames on contact. a substance freezes. bubbles form when two substances are combined. a solid forms when two substances are combined.
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Physics, 18.10.2019 19:40, JUSTDAN6929
Which is the correct definition of a chemical reaction? a. substances are mixed together. b. substances interact to form new substances. c. things change color. d. substances melt.
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