Chemistry 1120 Final Exam Review – Complete Study Guide (ECU Chemistry
2026)
When multiplying and dividing measurements, how many sig figs is your answer? - ANS ✔✔The
same number of sig figs as the measurement with the fewest number of sig figs
When adding and subtracting measurements, how many sig figs is your answer? - ANS ✔✔The
same number of sig figs as the fewest number of decimal places
What are the boiling and freezing points of Celsius temperatures? - ANS ✔✔100 C for boiling
0 C for freezing
What are the boiling and freezing points of Fahrenheit temperatures? - ANS ✔✔212 F for
boiling
32 C for freezing
Name the two popular density measures: - ANS ✔✔g/cm3
g/mL
How do you convert celsius to fahrenheit? (This will probs be given to you on the exam) - ANS
✔✔°C() + 32.0 = °F
How do you convert fahrenheit to celsius? (This will probs be given to you on the exam) - ANS
✔✔(°F - 32.0)() = °C
How do you convert celsius to kelvin? - ANS ✔✔°C + 273 = K
,Name the sizes of atoms and subatomic particles from smallest to largest: - ANS ✔✔(smallest)
Protons-->Neutrons-->Electrons (largest)
What does AMU stand for? - ANS ✔✔Atomic Mass Unit
What are the two particles located in the nucleus? - ANS ✔✔Protons and Neutrons
What is the particle located outside if the nucleus? - ANS ✔✔Electrons
What is a proton's charge? - ANS ✔✔+1
What is a neutron's charge? - ANS ✔✔It is *NEUTRAL*
Tricked ya!
What is an electron's charge? - ANS ✔✔-1
What is the mass of a proton or a neutron? - ANS ✔✔1.67x10^-24 g or 1 amu
What is the mass of an electron? - ANS ✔✔1/1800th the mass of a proton/neutron
Identify what each of these letters stand for:
A\/
\/
/\
, Z / \ - ANS ✔✔A = Mass # (P+N)
Z = Atomic # (P)
X = Element
If you have the following,
Carbon - 13
Carbon - 12
Carbon - 14
What do the numbers stand for? - ANS ✔✔The Mass #, or A
What is the isotope symbol for Ne with 11 Neutrons? - ANS ✔✔21
Ne
10
You must find Ne on the periodic table, then see how many protons it has. You will see 10. Then
add the Neutrons (11) to get the top number (Mass #) of Protons + Neutrons
What are the *columns* on the periodic table called? - ANS ✔✔Groups
What are the *rows* on the periodic table called? - ANS ✔✔Periods
What are the elements in Group 1? - ANS ✔✔Alkali Metals (Explode in H2O)
2026)
When multiplying and dividing measurements, how many sig figs is your answer? - ANS ✔✔The
same number of sig figs as the measurement with the fewest number of sig figs
When adding and subtracting measurements, how many sig figs is your answer? - ANS ✔✔The
same number of sig figs as the fewest number of decimal places
What are the boiling and freezing points of Celsius temperatures? - ANS ✔✔100 C for boiling
0 C for freezing
What are the boiling and freezing points of Fahrenheit temperatures? - ANS ✔✔212 F for
boiling
32 C for freezing
Name the two popular density measures: - ANS ✔✔g/cm3
g/mL
How do you convert celsius to fahrenheit? (This will probs be given to you on the exam) - ANS
✔✔°C() + 32.0 = °F
How do you convert fahrenheit to celsius? (This will probs be given to you on the exam) - ANS
✔✔(°F - 32.0)() = °C
How do you convert celsius to kelvin? - ANS ✔✔°C + 273 = K
,Name the sizes of atoms and subatomic particles from smallest to largest: - ANS ✔✔(smallest)
Protons-->Neutrons-->Electrons (largest)
What does AMU stand for? - ANS ✔✔Atomic Mass Unit
What are the two particles located in the nucleus? - ANS ✔✔Protons and Neutrons
What is the particle located outside if the nucleus? - ANS ✔✔Electrons
What is a proton's charge? - ANS ✔✔+1
What is a neutron's charge? - ANS ✔✔It is *NEUTRAL*
Tricked ya!
What is an electron's charge? - ANS ✔✔-1
What is the mass of a proton or a neutron? - ANS ✔✔1.67x10^-24 g or 1 amu
What is the mass of an electron? - ANS ✔✔1/1800th the mass of a proton/neutron
Identify what each of these letters stand for:
A\/
\/
/\
, Z / \ - ANS ✔✔A = Mass # (P+N)
Z = Atomic # (P)
X = Element
If you have the following,
Carbon - 13
Carbon - 12
Carbon - 14
What do the numbers stand for? - ANS ✔✔The Mass #, or A
What is the isotope symbol for Ne with 11 Neutrons? - ANS ✔✔21
Ne
10
You must find Ne on the periodic table, then see how many protons it has. You will see 10. Then
add the Neutrons (11) to get the top number (Mass #) of Protons + Neutrons
What are the *columns* on the periodic table called? - ANS ✔✔Groups
What are the *rows* on the periodic table called? - ANS ✔✔Periods
What are the elements in Group 1? - ANS ✔✔Alkali Metals (Explode in H2O)
