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HESI A2 CHEMISTRY (V1) EXAM QUESTIONS
Qs and Ans Expert- Explanation
This Exam contains:
-Guarantee passing score -23 Questions and Answers -format set of multiple-choice -Expert- Explanation Question 1: Polarity is based on:
Answer:
differences in electronegativity
Question 2: moles to grams conversion
Answer:
calculate the molar mass x the number of each element in the formula
Question 3: What is a transition metal
Answer:
Fe, Zn, Cu, Ag, Co Question 4: What reaction takes place in the nucleus to obtain stable nuclear configurations
Answer:
nuclear reaction
Question 5: Polyatomic for copper(I)cyanide
Answer:
Cu + Cn-
Question 6: What is ammonia
Answer:
NH3 Question 7: Carbon-14 has:
Answer:
- protons, 6 electons, 8 neutrons
Question 8: What matter changes in volume with change in temperature and pressure
Answer:
gas
Question 9: What is the charge of 0
Answer:
-2
Question 10: An isotope is the same number of protons, but different number of
Answer:
neutrons
Question 11: What do catalysts do
Answer:
speed up the rate of a reaction, lowers the amount of activation energy needed for a chemical reaction
Question 12: What matter has a definite volume and definite shape
Answer:
solid
Question 13: What is an example of an alloy
Answer:
two metals
Question 14: What is Fe and what kind of metal is it
Answer:
Iron and a transition metal
Question 15: Where is magnesium located
Answer:
second row, second column Question 16: What is the term for the amount of heat necessary to raise the temperature of 1 gram by 1 C
Answer:
specific heat
Question 17: What is the strongest bond
Answer:
covalent
Question 18: What is van der Waal equation?
Answer:
Pv=nRT
Question 19: What is the systematic name for ammonia (NH3)
Answer:
Nitrogen trihydrate
Question 20: Where can you find electrons
Answer:
orbit
Question 21: What structure is formed from two amino acids and a peptide bond
Answer:
protein
Question 22: Fe (-) is smaller than
Answer:
Fe
Question 23: What is acidic
Answer:
1-6.9
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