Topic 5 - energy changes
Cards (82)
- What happens to energy during chemical reactions?
- What is stored within chemicals?
- What happens if the products of a reaction store less energy than the reactants?
- What happens if the products of a reaction store more energy than the reactants?
- What happens to the overall amount of energy in chemical reactions?
- What does it mean to say energy is conserved in reactions?
- What is an exothermic reaction?
- What is a common indicator of an exothermic reaction?
- What type of reactions are neutralization reactions?
- What type of reaction is the addition of sodium to water?
- What process is used in some hand warmers to release energy?
- What type of reactions do self-heating cans of hot chocolate rely on?
- What is an endothermic reaction?
- What is a common indicator of an endothermic reaction?
- Are endothermic reactions more or less common than exothermic reactions?
- What happens when heating calcium carbonate in thermal decomposition?
- What everyday application utilizes endothermic reactions to provide cooling?
- In addition to knowing if a reaction is endothermic or exothermic, what else might you need to know?
- How can you measure the amount of energy released by a chemical reaction in solution?
- What is the biggest problem with energy measurements in calorimetry experiments?
- How can energy loss to the surroundings be reduced in calorimetry experiments?
- For which types of reactions does the polystyrene cup method work well?
- In the described experiment, what temperature should the water bath be set to?
- What is another name for reaction profiles?
- What do reaction profiles show?
- In an exothermic reaction profile, where are the products located relative to the reactants?
- What does the difference in height on an exothermic reaction profile represent?
- What does the initial rise in energy on a reaction profile represent?
- What is the activation energy?
- How is activation energy typically supplied?
- In an endothermic reaction profile, where are the products located relative to the reactants?
- What does the difference in height on an endothermic reaction profile represent?
- In an exothermic reaction, do particles release or take in energy from their surroundings?
- In an endothermic reaction, do particles release or take in energy from their surroundings?
- What causes energy changes in chemical reactions?
- What must be supplied to break existing bonds?
- Is bond breaking an endothermic or exothermic process?
- Is bond formation an endothermic or exothermic process?
- In exothermic reactions, is the energy released by forming bonds greater or less than the energy used to break them?
- In endothermic reactions, is the energy released by forming bonds greater or less than the energy used to break them?
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