Chemistry: Final Exam Review With 100% Correct Answers 2024
95 views 0 purchase
Module
Chemistry
Institution
Chemistry
Chemistry: Final Exam Review With
100% Correct Answers 2024
How many valence electrons are in an atom of chlorine? - answer7
How many valence electrons does aluminum have? - answer3
Define Reaction Rate - answerThe decrease in concentration of reactants or the increase in
concentration of prod...
Chemistry: Final Exam Review With 100% Correct Answers 2024 How many valence electrons are in an atom of chlorine? - answer✔✔7 How many valence e lectrons does aluminum have? - answer✔✔3 Define Reaction Rate - answer✔✔The decrease in concentration of reactants or the increase in concentration of products with time. How does increasing temperature affect the rate of reaction? - answer✔✔Increasing temperature causes the kinetic energy to increase. Thus, molecules are moving faster and colliding more frequently. This causes the rate of reaction to incrase. If I decrease the concentration of reactant, what happens to the rate of reaction? - answer✔✔Decre asing concentration leads to less reactants available for collision. Therefore, reaction rate decreases. How does surface area influence reaction rate? - answer✔✔By increasing the surface area of reactant molecules, we are increasing the space or point of contact that these molecules have available to interact. This causes an increase in the rate of reaction. How does a catalyst speed up a chemical reaction? - answer✔✔A catalyst speeds up a chemical reaction by finding an alternate pathway with a lower acti vation energy. Define activation energy. - answer✔✔The energy required to start a chemical reaction. Define equilibrium. - answer✔✔Equilibrium is established when the rate of the forward reaction is equal to the rate of the reverse reaction. Is energy absorbed or released in an endothermic reaction? - answer✔✔Absorbed. What is the sign of delta H for an exothermic reaction? - answer✔✔Exothermic reactions release energy. The sign of delta H is negative. When you touch a flask and it feels hot, is this an endothermic or exothermic process? - answer✔✔Exothermic; heat is being given off. Define specific heat capacity. - answer✔✔The amount of heat required to raise 1g of a substance to 1 degrees Celsius. q=mc(delta)T ; What does "q" stand for? - answer✔✔Heat (kJ) q=mc(delta)T ; What does "c" stand for? - answer✔✔Specific heat capacity (J / g degrees C) What is a hydrogen ion donor called? - answer✔✔An acid. What is a hydrogen ion acceptor called? - answer✔✔A base. Feels slippery; acid or base? - answ er✔✔Base. Tastes sour; acid or base? - answer✔✔Acid. Tastes bitter; acid or base? - answer✔✔Base. pH < 7 ; acid, base, or neutral? - answer✔✔Acid pH > 7 ; acid, base, or neutral? - answer✔✔Base Define neutralization. - answer✔✔When an acid reacts with a ba se to form water and a salt. pH = 7. Soap; acid or base? - answer✔✔Base (tastes bitter) Ammonia, acid or base? - answer✔✔Base (drain cleaners are bases). Lemonade; acid or base? - answer✔✔Acid (tastes sour) Define solute. - answer✔✔The part of the solution in less amount. Define solvent. - answer✔✔The part of the solution in greater amount. (HINT: solvent is a bigger word than solute) How many atoms are in 1 mole? - answer✔✔1 mole = 6.02 x 10^23 atoms/molecules What is the volume occupied by 1 mole of a gas at STP? - answer✔✔1 mole of gas at STP = 22.4 L Define STP. - answer✔✔Pressure = 1 atm or 101.3 kPa Temperature = 0 degrees Celsius or 273 K What is the temperature at absolute zero? - answer✔✔0 K (all molecular motion stops) What causes gas pressure? - answer✔✔Gas molecules are constant motion and collide with the walls of their containers and with the surfaces that they come into contact with. This collision causes pressure. Equal volumes of gases at STP have equal _____. - answer✔✔Moles.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller TheStar. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £8.51. You're not tied to anything after your purchase.
