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Chemistry Vocabulary Flash Cards Flashcards | StudBud
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Chemistry Vocabulary Flash Cards
Chemistry Vocabulary Flash Cards
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1
What is another word for Molar Mass
formula weight
molecular weight
2
Which one of these is a Decomposition reaction
C₆H₁₂O₆ → 2 C₂H₆O + 2 CO₂
Zn + CuSO₄ → ZnSO₄ + Cu
NaOH + HCl → NaCl + H₂O
H₂ + O₂ → H₂O
3
Which one of these is a Single-Replacement Reaction
NaOH + HCl → NaCl + H₂O
H₂ + O₂ → H₂O
C₆H₁₂O₆ → 2 C₂H₆O + 2 CO₂
Zn + CuSO₄ → ZnSO₄ + Cu
4
What is the difference of a Complete Ionic Equation and a Net Ionic Equation?
Ions that appear on both sides of the equation
Complete ionic equation shows all ions; a net ionic shows reacting ions.
inclusion or exclusion of spectator ions, not in the overall charge balance
5
Hydrate (in chemistry) means you need to drink water
True
False
6
This is a Decomposition Reaction
C₆H₁₂O₆ → 2 C₂H₆O + 2 CO₂
True
False
7
How do you solve for Mass Composition
Divide the element's mass by the compound's molar mass and multiply by 100.
Determine the molar mass of a compound or its elements.
calculate the percentage of each element in a compound by mass
Element molar mass ÷ compound molar mass × 100.
8
Which one of these is a Double Replacement Reaction?
Cu + AgNO₃ → Cu(NO₃)₂ + Ag
3 H₂SO₄ + 2 FeCl₃ → 2 Fe₂(SO₄)₃ + 6 HCl
2 Na₂CO₃ + 3 CuSO₄ → Cu₂CO₃(OH)₂ + 3 Na₂SO₄
HCl + NaOH → NaCl + H₂O
9
Using the "Balanced Equation" method how would you balance C₄H₁₀ + O₂ → CO₂ + H₂O
2 C₄H₁₀ + 13 O₂ → 8 CO₂ + 10 H₂O
C₄H₁₀ + O₂ → CO₂ + H₂O
3 C₄ 54H₁₀ + O₂ → 234 CO₂ + 22 H₂O
1 C₄H₁₀ + 2 O₂ → 3 CO₂ + 2 H₂O
10
What does "Molar Mass" represent?
the mass of a single molecule or atom
the composition of a discrete molecule
the mass of one mole of a substance
A molecular weight or formula weight
11
What would be a word equation
Water+Phosphate
Phosphate+Dirt
Cat and Dog
12
What is Chemical Equation
physical change
a symbolic representation of a chemical reaction
a simple expression without an equal sign
13
What is the answer for "Avogadro's Number"
equal to 6.02214076 × 1023
equal to 6.02214076 × 1022
equal to 6.02214076 × 1029
equal to 3.0223297076 × 1023
14
Which one of these is a Synthesis reaction
3 Ba(OH)₂ + 2 Al₂(SO₄)₃ → 3 BaSO₄ + 4 Al(OH)₃
2 Na₂CO₃ + 3 CuSO₄ → Cu₂CO₃(OH)₂ + 3 Na₂SO₄
2 Al + 6 HCl → 2 AlCl₃ + 3 H₂
2 Fe₃O₄ + 3 O₂ → 4 Fe₃O₄
15
What is a "Mole"
a unit of measurement representing a specific number of particles
6.022 × 10^23, known as Avogadro's number
a small burrowing insectivorous mammal with
16
An example of Coefficient
1/2H2O
2H2O
a number placed in front of a chemical symbol
17
Which one of these is a Combustion Reaction?
CH₄ + 2 O₂ → CO₂ + 2 H₂O
2 KClO₃ → 2 KCl + 3 O₂
3 Fe + 4 H₂O → Fe₃O₄ + 4 H₂
C₆H₁₂O₆ → 2 C₂H₆O + 2 CO₂
18
What is the Empirical Formula
gives the actual number of atoms in a molecule
show the actual number or the arrangement of atoms within the molecules
indicates that there are two hydrogen and two oxygen atoms in a molecule.
the simplest whole number ratio of atoms present in a compound
19
The Molecular Formula helps with what?
indicating the type and number of atoms present in a molecule or compound
Atom connectivity
reveals how atoms are arranged or connected in a molecule
shows the three-dimensional shape or geometry of the molecule.
20
In what instance would you use a Skeleton equation
to determine the correct ratios of reactants and products
Represent a reaction with reactants and products in formulas.
When you need to show the correct amounts in a reaction.
