Exam (elaborations)
IB CHEMISTRY EXAM QUESTIONS AND ANSWERS
- Course
- Institution
IB CHEMISTRY EXAM QUESTIONS AND ANSWERS
[Show more]
Content preview
1IB CHEMISTRY EXAM QUESTIONS AND ANSWERS
Outline the rxn between acids + reactive metals, metal oxides,
metal hydroxides, hydrogen carbonates, and carbonates -
✔✔ANSWER✔✔-1. Acid + Metal = Salt + Hydrogen gas (reactive
metal - this is reason for corrosion)
2. Acid + Metal hydroxide = Salt + Water (neutralization - exo)
3. Ammonia + Acid = Salt (neutralization - exo)
4.Acid + Metal oxide = Salt + Water (neutralization - exo)
5.Acid + Carbonate = Salt + Water + Carbon
dioxide
6. Acid + Hydrogen carbonate = Salt + Water +
Carbon dioxide
Isotopes - ✔✔ANSWER✔✔-Atoms of same element with same
number of protons, different number of neutrons
1
,2
Mass Spectrometer - ✔✔ANSWER✔✔-Used to determine
relative atomic mass
Vaporization -> Ionization -> Acceleration -> Deflection
Amount of deflection depends on mass and charge (smaller the
mass, higher the charge -> greater deflection)
mass/charge ratio recorded, measures mass and the relative
amount of all ions present
Use of radioactive isotope Carbon - ✔✔ANSWER✔✔-C-14
Carbon dating
Use of radioactive isotope of Cobalt - ✔✔ANSWER✔✔-Co-60
Radiotherapy
Use of radioactive isotopes of Iodine - ✔✔ANSWER✔✔-I-131
and I-125
used as tracers in medicine for treating and diagnosing illnesses
2
,3
Afbau principle - ✔✔ANSWER✔✔-orbitals with lowest energy
are filled first
Hund's rule - ✔✔ANSWER✔✔-orbitals filled within the same
subshell are filled singly first
First Ionization Energy - ✔✔ANSWER✔✔-The energy required
to remove one electron from an atom in its gaseous state.
(kJ/mol)
X(g) -> X+(g) + e-
Transition Element - ✔✔ANSWER✔✔-an element that
possesses and incomplete d sub level in one or more of its
oxidation states
have variable oxidation states, form complex ligands, have
colored compounds, display catalytic and magnetic properties
Catalyst - ✔✔ANSWER✔✔-increase the rate of a chemical
reaction by providing a different reaction pathway and reducing
the activation energy
Catalyst: Platinum and Palladium (Pt and Pd) - ✔✔ANSWER✔✔-
3
, 4
catalytic converters in cars
4
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 or Stuvia-credit 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 TutorExpert. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
83637 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now