CHEM 121 FINAL Exam | Questions with Correct Answers 2026 latest up-
date!! - Questions & Answers | Latest Already Graded A+
1. kinetic molecular the- all matter is made of tiny particles that are constantly moving
ory
2. fundamental particle take a macroscopic object and divide it repeatedly. Eventually you have a
particle, which, if further divided is no longer the original substance. This
smallest piece of the substance is called...
3. h2o molecule the fundamental particle of water is what?
4. atom the basic unit of a chemical element
5. molecule two or more atoms (same or different) chemically bound
6. element fundamental particle contains only one kind of atom
7. compound two or more different kinds of atoms chemically bound
8. the same in a pure substance, all the fundamental particles are what?
9. solution mixture that is uniform throughout
10. density = mass / volume
11. atomic number number of protons in the nucleus, defines the element
12. mass number equal to the sum of protons and neutrons
13. isotope what results when you change the number of neutrons in an element?
14. atomic mass weighted average of the masses of the isotopes of an element, gives the
mass of one atom of the element
15. alkali metals group 1 on periodic table
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, CHEM 121 FINAL Exam | Questions with Correct Answers 2026 latest up-
date!! - Questions & Answers | Latest Already Graded A+
16. alkali earth group 2 on periodic table
17. halogens group 17 on periodic table
18. properties of metals good conductors of heat and electricity, malleable, ductile, often shiny, tend
to lose electrons in chemical change
19. properties of non poor conductors of heat and electricity, not ductile, not malleable, gain
metals electrons in chemical change
20. avagadros number 6.022 x 10^23
21. ionic bond bond between a nonmetal and a metal
22. covalent bond bond between 2 or more nonmetals
23. naming covalent first element is given its element name, second suffix replaced by "ide", USE
compounds GREEK PREFIXES
24. naming ionic com- name the metal, if the metal has an uncommon charge, indicate the charge
pounds with roman numerals, change nonmetal suffix to "ide", if polyatomic ion
just name them
25. properties of ionic crystalline, hard, brittle, high melt point, insulators as solid, but conductors
compounds in solution or when melted
26. percent composition mass of element / total mass of compound x 100
27. ionic which type of compound completely dissociates in water to form elec-
trolytes?
28. empirical formula uses the simplest integers to represent the ratio of atoms in a compound
29. molecular formula
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date!! - Questions & Answers | Latest Already Graded A+
1. kinetic molecular the- all matter is made of tiny particles that are constantly moving
ory
2. fundamental particle take a macroscopic object and divide it repeatedly. Eventually you have a
particle, which, if further divided is no longer the original substance. This
smallest piece of the substance is called...
3. h2o molecule the fundamental particle of water is what?
4. atom the basic unit of a chemical element
5. molecule two or more atoms (same or different) chemically bound
6. element fundamental particle contains only one kind of atom
7. compound two or more different kinds of atoms chemically bound
8. the same in a pure substance, all the fundamental particles are what?
9. solution mixture that is uniform throughout
10. density = mass / volume
11. atomic number number of protons in the nucleus, defines the element
12. mass number equal to the sum of protons and neutrons
13. isotope what results when you change the number of neutrons in an element?
14. atomic mass weighted average of the masses of the isotopes of an element, gives the
mass of one atom of the element
15. alkali metals group 1 on periodic table
1/8
, CHEM 121 FINAL Exam | Questions with Correct Answers 2026 latest up-
date!! - Questions & Answers | Latest Already Graded A+
16. alkali earth group 2 on periodic table
17. halogens group 17 on periodic table
18. properties of metals good conductors of heat and electricity, malleable, ductile, often shiny, tend
to lose electrons in chemical change
19. properties of non poor conductors of heat and electricity, not ductile, not malleable, gain
metals electrons in chemical change
20. avagadros number 6.022 x 10^23
21. ionic bond bond between a nonmetal and a metal
22. covalent bond bond between 2 or more nonmetals
23. naming covalent first element is given its element name, second suffix replaced by "ide", USE
compounds GREEK PREFIXES
24. naming ionic com- name the metal, if the metal has an uncommon charge, indicate the charge
pounds with roman numerals, change nonmetal suffix to "ide", if polyatomic ion
just name them
25. properties of ionic crystalline, hard, brittle, high melt point, insulators as solid, but conductors
compounds in solution or when melted
26. percent composition mass of element / total mass of compound x 100
27. ionic which type of compound completely dissociates in water to form elec-
trolytes?
28. empirical formula uses the simplest integers to represent the ratio of atoms in a compound
29. molecular formula
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