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FREE CHEMISTRY AND STUDY GAMES ABOUT CHEM UNIT
1 VOCAB EXAM QUESTIONS
Qs and Ans Expert- Explanation
This Exam contains:
-Guarantee passing score -19 Questions and Answers -format set of multiple-choice -Expert- Explanation
Question 1: Percent Error
Answer:
Experimental value minus the accepted value, divided by the accepted value and then multiplied by 100
Question 2: Chemistry
Answer:
A science that deals with the structure and properties
Question 3: Metalloid
Answer:
Element with the properties of both metals and nonmetals
Question 4: Atom
Answer:
Smallest particle of a substance that can exist by itself
Question 5: Precision
Answer:
The quality of being exact
Question 6: Accuracy
Answer:
The ability to work without mistakes
Question 7: Scientific Notation
Answer:
Method that expresses the number multiplied by 10 and the appropriate power
Question 8: Nuclear Fusion
Answer:
Reaction in which the nuclei of one atom combines with the nuclei of another to form a larger nuclei
Question 9: Electron Cloud
Answer:
System of electrons surrounding the nucleus of an atom
Question 10: Density
Answer:
Mass per unit of volume
Question 11: Precipitate
Answer:
A solid that is produced by a chemical reaction in solution
Question 12: Qualitative Data
Answer:
Data in words rather than in numbers
Question 13: Specific Heat
Answer:
The heat required to raise the temperature of the mass of a given substance by given amount
Question 14: Quantitative Data
Answer:
Numerical measurements rather than its words
Question 15: Mass Number
Answer:
Sum of the protons and neutrons in the nucleus of an atom
Question 16: Isotope
Answer:
Atoms with same number of protons but not the same number of neutrons
Question 17: Significant Figure
Answer:
a number that express a magnitude to a specified degree of accuracy
Question 18: Noble Gas
Answer:
Group 18 in the periodic table with a full outer shell
Question 19: Atomic Number
Answer:
Number of protons in the nucleus in an atom
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