Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
10 Cards in this Set
- Front
- Back
How do bonds break and form during a chemical reaction?
|
When chemical reactions change into different substances by breaking and forming chemical bonds.
|
|
What are the two parts of a chemical reaction?
|
The product and the reactant
|
|
How is bond formation represented by the snapping sound of two magnets?
|
It shows the energy that is released when a bond forms.
|
|
How is bond energy related to your separation of the magnets?
|
In order to pull the magnets apart energy is needed similarly energy is needed to break bonds.
|
|
How are exothermic reactions different from endothermic reactions?
|
Exothermic reactions release more energy than they absorb, they also have a higher bond energy When endothermic reactions absorb more of the energy than they release, have a lower bond energy.
|
|
Why might it not always be possible to determine the reactants and the products in a reaction? explain your answer in terms of chemical equilibrium.
|
The chemical equilibrium depending on the concentration of reactants and products may be formed at the same rate.
|
|
What causes chemical bonds to break during and reaction?
|
The addition of energy to the reactants.
|
|
When does a chemical reaction reach equilibrium?
|
When the reactants and products are made at the same rate.
|
|
What of the reactants and products determines whether energy will be released or absorbed during a chemical reaction?
|
Bond energy
|
|
Before a chemical reaction can start what has to be absorbed by the reactant?
|
Energy
|