Chemistry, 04.07.2019 15:30 vallhernandez13
Which of the following most likely happens during a chemical change? no new substances are formed. properties of a substance remain unchanged. composition of a substance is same as before. different atoms than before are introduced after the change
Answers: 2
Chemistry, 22.06.2019 15:20
Which description best characterizes the motion of particles in a solid?
Answers: 2
Chemistry, 22.06.2019 17:40
Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.
Answers: 1
Chemistry, 23.06.2019 11:50
Charles's law describes the relationship of the volume and temperature of gas at a constant mass and pressure. according to this law, what would happen to the temperature of the gas if its volume decreased from 1.0 l to 0.50 l?
Answers: 3
Chemistry, 23.06.2019 15:10
Certain types of organisms such as fireflies and anglerfish can produce light through chemical reactions in a process called bioluminescence. what kind of chemical reactions occur during bioluminescence? o a) exothermic ob) endothermic oc) recomposition od) decomposition
Answers: 2
Which of the following most likely happens during a chemical change? no new substances are formed....
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