Which of the following provides evidence that a chemical change has taken place? a). the original substance can be recovered by physical processes b). a gas is formed when tow liquids are mixed c). some pieces of substances get smaller or disappear d). one substance dissolves in another
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Chemistry, 22.06.2019 09:00
What type of energy do chemical bonds have? what type of energy is it converted to during chemical reactions? question 15 options: chemical bonds have kinetic energy, which is converted to potential energy during chemical reactions. chemical bonds have electric energy, which is converted to potential energy during chemical reactions. chemical bonds have heat energy, which is converted to kinetic energy during chemical reactions. chemical bonds have potential energy, which is converted to heat energy during chemical reactions.
Answers: 1
Chemistry, 23.06.2019 20:00
Asample of water is taken and kept in a beaker in a freezer at a constant temperature of 0°c. if the system is at dynamic equilibrium, which of these statements is true? the rate of freezing is equal to the rate of melting. the rate of freezing is greater than the rate of melting. the amount of ice is greater than the amount of water. the amount of ice is equal to the amount of water.
Answers: 1
Chemistry, 23.06.2019 20:50
The temperature of a substance is a measure of the 1. average kinetic energy of its particles 2. average potential energy of its particles 3. ionization energy of its particles 4. activation energy of its particles
Answers: 1
Which of the following provides evidence that a chemical change has taken place? a). the original s...
Mathematics, 29.05.2020 23:59
Mathematics, 29.05.2020 23:59
Mathematics, 29.05.2020 23:59
Mathematics, 29.05.2020 23:59
Mathematics, 29.05.2020 23:59
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Mathematics, 30.05.2020 00:00
Mathematics, 30.05.2020 00:00
Mathematics, 30.05.2020 00:00