HESI Chemistry Practice Test 1
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Question 1 of 20
1. Question
What type of bond is found in the sugar-phosphate backbone of DNA?
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Question 2 of 20
2. Question
In the Periodic Table, in what direction would the electronegativity of an element increase?
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Question 3 of 20
3. Question
Which of the four macromolecules contains genetic codes?
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Question 4 of 20
4. Question
If a student wanted to speed up the rate of a reaction, they should do which of the following?
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Question 5 of 20
5. Question
Which of these atoms has the smallest atomic radius?
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Question 6 of 20
6. Question
In an oxidation-reduction reaction, what happens to the element that is reduced?
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Question 7 of 20
7. Question
Placing 20 grams of sugar cubes in 100 mL of water would instantly create which of these?
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Question 8 of 20
8. Question
What is one of the two main components of a lipid?
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Question 9 of 20
9. Question
If an isotope of an atom has an atomic number of 38 and an atomic mass number of 116, how many electrons would be found in an atom with no net charge?
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Question 10 of 20
10. Question
The sun’s source of energy is from what process that takes place in its core?
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Question 11 of 20
11. Question
Antacids react with HCl in the stomach to help alleviate heartburn in what type of reaction?
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Question 12 of 20
12. Question
Which of these formulas is most likely for a compound formed from magnesium with an oxidation number of +2 and chlorine with an oxidation number of -1?
a. MgCl
b. Mg2Cl2
c. MgCl2
d. Mg2Cl
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Question 13 of 20
13. Question
Please answer the following question
In the reaction 2C2H6 + 7O2 → 4CO2 + 6H2O, which element is reduced?
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Question 14 of 20
14. Question
Which of the following is true about a biological catalyst?
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Question 15 of 20
15. Question
What percent of the original grams of unstable, radioactive substance Y, which has a half-life of 5 minutes, will remain after 20 minutes?
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Question 16 of 20
16. Question
A mixture of four elements that has a uniform density throughout would be classified as which of these?
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Question 17 of 20
17. Question
What is the name for the process by which the liver can make glucose from proteins, components of fats, and other noncarbohydrate sources?
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Question 18 of 20
18. Question
If potassium has an atomic number of 19 and an atomic mass of 39, how many total electrons does it have?
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Question 19 of 20
19. Question
On a phase diagram, the place where the solid, liquid, and gas phases of a substance coexist is referred to as what?
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Question 20 of 20
20. Question
Which of the following is NOT an example of a physical property?
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