2023)CHEMISTRY- PDF DOCUMENT-LATEST UPDATE
FOR REAL EXAM
HESI CHEMISTRY V1/V2
1. If Hydrogen is in a compound, what would its oxidation number be?
+1
2. What is the oxidation number of any simple
ion?The same as the charge of the ion
3. How many kilograms are in a
pound?0.453592 kg
4. What isthe temperature for freezing point of water in Celsius?0
degrees Celsius (32°F for Fahrenheit)
5. What isthe conversion of Celsius to Fahrenheit?
5F=9C+160 (remember 5F because you have 5 fingers on a hand & 9C because catshave
9 lives)
6. What is the oxidation number of an element atom?0
7. What is the freezing point of sea water in Fahrenheit?
Below 0C (pick and answer choice around -2C, actual temp depends on how much saltis
in the water)
8. How many amino acids are in a
dipeptide?2
9. If Oxygen is in a compound, what would its oxidation number be?
-2
10. Which of the following pH values would lemon juice likely have?2
because the lower the pH value, the more acidic
11. What is a pentose?
A 5 carbon sugar (Pent = 5) (ose = sugar)
12. What is the oxidation state of the Sulfur atom in Sulfuric Acid H2SO4?
6 i(each iH iis i+1, ieach iO iis i-2. iAll icharges ihave ito iadd ito i0. i2+S-8=0, iso iS=6)
13. How many neutrons does carbon 14 have?8
( mass# - atomics # = neutrons) 14 - 6 = 8
14. How many protons does Potassium
, have?1
i 9 i(same ias ithe iatomic inumber)
15. How many amino acids are essential for human
life?20 amino acids
16. Normal body temperature in
°C?37°C
17. Normal body temperature in
°F?98.6°F
18. Boiling point of water in
°C?100°C
19. Boiling point of water in °F?
, 212°F
20. 0°K is equal to °C? -273°C
21. The term Amphoteric means?
A substance that can act as both a base & acid
22. What is Kelvin based
around?Absolute zero
23. A compound that is a Hydrogen orproton donor, corrosive to metals, causes
bluelitmus paper to become red and becomes less acidic when mixed with a base
is? Acid
24. Mixture of 2 or more metals
are?iAlloys
25. Acids:
• pH less than 7.0
• sour/tart
• Formulas ibegin iwith iH i(Hydrogen)
• Proton iDonor
26. 3 types of radiation in nuclear
chemistry?A
i lpha, iBeta i& iGamma
27. Alpha radiation:
• * Emission of Helium (He) ions in the nuclei
• * Contains 2 protons & 2 neutrons.
• * +2 Charge
• * Largest radiation particle.
• * Can ibe istopped iby ipiece iof ipaper
28. Type of Alloy in which another metal is dissolved in Mercury
(Hg)?iAmalgam
29. Proteins are made up
of?iAmino iAcids
30. Glycogen is what kind of