Chemistry 101 – exam 1 with qustions and answers (100% solved)
1 (prefix) - ✔✔✔-Mono-
10 (prefix) - ✔✔✔-Deca-
2 (prefix) - ✔✔✔-Di-
3 (prefix) - ✔✔✔-Tri-
4 (prefix) - ✔✔✔-Tetra-
5 (prefix) - ✔✔✔-Penta-
6 (prefix) - ✔✔✔-Hexa-
7 (prefix) - ✔✔✔-Hepta-
8 (prefix) - ✔✔✔-Octa-
9 (prefix) - ✔✔✔-Nona-
Accuracy - ✔✔✔-How close the measurements are to the true value
Acetate - ✔✔✔-C₂H₃O₂⁻
Acids - ✔✔✔-Formula has H as the first element
, Chemistry 101 – exam 1 with qustions and answers (100% solved)
Addition and Subtraction with Sig Figs - ✔✔✔-Always use the same amount of sig figs as the
number with the smallest amount of decimal places
Ex. 12.11cm + 18.0cm + 1.013cm = 31.1cm (1 decimal place from 18.0cm)
Ammonium - ✔✔✔-NH₄⁺
Atmospheric pressure (atm) - ✔✔✔-1 atm = 760 mm Hg
Atto- - ✔✔✔-Symbol: a; 10⁻¹⁸
Average Atomic Mass - ✔✔✔-Average of the natural occuring isotopes found in nature.
Problems will be given with a variety of isotopes and their mass in amu and percent of natural
abundance. Convert the percent of natural abundacne into decimal form by dividing by 100.
Multiply that number by the amu given and add all of the isotopes together.
Avogadro's Law: Volume and Amount (Moles) - ✔✔✔-Equal volumes of gases contain equal
numbers of particles (moles or n).
V₁/ n₁ = V₂/ n₂
Avogadro's Number - ✔✔✔-1 mole = 6.02214 x 10²³ of anything
Balancing Chemical Equations - ✔✔✔-Write down chemical formulas for each of the reactants
and products. Balance atoms that occur in more complex substances first. Always balance atoms
in compounds before atoms in pure elements. Balance atoms that occur as free elements on
either side of the equation last. Always balance free elements on either side of the equation
last. Always balance free elements by adjusting the coeffecient on the free element. If the
balanced equation contains coefficient fractions, clear these by multiplying the entire equation
by the denominator of the fraction.
Binary Acids - ✔✔✔-Contain only 2 elements
1 (prefix) - ✔✔✔-Mono-
10 (prefix) - ✔✔✔-Deca-
2 (prefix) - ✔✔✔-Di-
3 (prefix) - ✔✔✔-Tri-
4 (prefix) - ✔✔✔-Tetra-
5 (prefix) - ✔✔✔-Penta-
6 (prefix) - ✔✔✔-Hexa-
7 (prefix) - ✔✔✔-Hepta-
8 (prefix) - ✔✔✔-Octa-
9 (prefix) - ✔✔✔-Nona-
Accuracy - ✔✔✔-How close the measurements are to the true value
Acetate - ✔✔✔-C₂H₃O₂⁻
Acids - ✔✔✔-Formula has H as the first element
, Chemistry 101 – exam 1 with qustions and answers (100% solved)
Addition and Subtraction with Sig Figs - ✔✔✔-Always use the same amount of sig figs as the
number with the smallest amount of decimal places
Ex. 12.11cm + 18.0cm + 1.013cm = 31.1cm (1 decimal place from 18.0cm)
Ammonium - ✔✔✔-NH₄⁺
Atmospheric pressure (atm) - ✔✔✔-1 atm = 760 mm Hg
Atto- - ✔✔✔-Symbol: a; 10⁻¹⁸
Average Atomic Mass - ✔✔✔-Average of the natural occuring isotopes found in nature.
Problems will be given with a variety of isotopes and their mass in amu and percent of natural
abundance. Convert the percent of natural abundacne into decimal form by dividing by 100.
Multiply that number by the amu given and add all of the isotopes together.
Avogadro's Law: Volume and Amount (Moles) - ✔✔✔-Equal volumes of gases contain equal
numbers of particles (moles or n).
V₁/ n₁ = V₂/ n₂
Avogadro's Number - ✔✔✔-1 mole = 6.02214 x 10²³ of anything
Balancing Chemical Equations - ✔✔✔-Write down chemical formulas for each of the reactants
and products. Balance atoms that occur in more complex substances first. Always balance atoms
in compounds before atoms in pure elements. Balance atoms that occur as free elements on
either side of the equation last. Always balance free elements on either side of the equation
last. Always balance free elements by adjusting the coeffecient on the free element. If the
balanced equation contains coefficient fractions, clear these by multiplying the entire equation
by the denominator of the fraction.
Binary Acids - ✔✔✔-Contain only 2 elements
