Flashcards
1.2: Chemical Equations
Flashcards do conjunto (5)
- 1What happens to the atoms in a chemical reaction?No new atoms are created or destroyed, but simply rearranged in a chemical reaction
- 2mass of reactants = mass of ______mass of reactants = mass of products
***This is called the Law of conservation of mass - 3Why does it seem as if this law has been broken in reactions involving gases and open containersthis is because mass may have been lost when the gas formed has escaped into the air OR the gas may have reacted with the oxygen in the air, formng an oxide and an increase in mass
- 4Write the state symbols for each state: a. solid b. liquid c. gas d. aqueous solutionsa. (s)
b. (l)
c. (g)
d. (aq) - 5Balance this equation: Cu + O² = CuOCu + O² = CuO
↓
Cu + O² = 2CuO
↓
2Cu + O² = 2CuO
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- O usuário eliminou as informações de disciplina FlashCards sobre 1.2: Chemical Equations, criado por Usuário eliminado em 12-03-2018.
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- Usuário eliminado · mar 2018
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- 12 mar 2018
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- Criado por Farha Idrees · 27 nov 2016
- Copiado por Farha Idrees · 12 mar 2018
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