CHEM103 / CHEM 103 Module 5: (Latest
Update ) General Chemistry I with
Lab | Questions & Answers | Grade A | 100%
Correct. Portage Learning
1. Chemical Equation: Symbolic representation of both the identies and the
relative quantities (if balanced) of substances undergoing a chemical or
physical change
2. Reactants: sustances UNDERGOING reaction
3. Products: Substances GENERATED by the reaction
4. Coefficients: Number placed in from of symbols or formulas in a chemical
equation to indicate their relative value
- Provide relative ratio, which should stay consistent from reactants to products
- balanced equations should show in lowest whole-number ratios
,5. Balanced Equation: chemical equation with the same number of atoms of
each element on both sides of the equation (reactant and product sides)
- demonstrates the Law of Conservation of Matter
- CANNOT change subscripts to balance - these are substances
-CAN change coefficients - they multiply the entire formula to the right (2 of
H_2O) 6. Balancing Equations: Adding coefficients IN FRONT of reactants
or products in a chemical equation. Each element should have the same number
of atoms on both sides.
Record counts EVERY TIME a change is made
NEVER change subscripts
Balancing by inspection = creating the balancing chart
7. Balancing Difficult Equations: Use fractions to represent odd ratios, then
multiply the whole equation to balance
8. Physical States (4): (s) solid,
(l) liquid,
, (g) gas,
(aq) aqueous / dissolved in water
i.e. 2 Na(s) + 2 H20(l) -> 2 NaOH (aq) +
H2 (g) 9. Special Conditions: written
above the arrow triangle = heat
wa
vel
en
gth
hv
(lig
ht)
30 degrees (temp where it took place)
element symbol (catalyst)
10. molecular equation: chemical equation in which all reactants and
products are represented as neutral substances
NOTE: Ionic substances dissociate into ions when dissolved in water
Update ) General Chemistry I with
Lab | Questions & Answers | Grade A | 100%
Correct. Portage Learning
1. Chemical Equation: Symbolic representation of both the identies and the
relative quantities (if balanced) of substances undergoing a chemical or
physical change
2. Reactants: sustances UNDERGOING reaction
3. Products: Substances GENERATED by the reaction
4. Coefficients: Number placed in from of symbols or formulas in a chemical
equation to indicate their relative value
- Provide relative ratio, which should stay consistent from reactants to products
- balanced equations should show in lowest whole-number ratios
,5. Balanced Equation: chemical equation with the same number of atoms of
each element on both sides of the equation (reactant and product sides)
- demonstrates the Law of Conservation of Matter
- CANNOT change subscripts to balance - these are substances
-CAN change coefficients - they multiply the entire formula to the right (2 of
H_2O) 6. Balancing Equations: Adding coefficients IN FRONT of reactants
or products in a chemical equation. Each element should have the same number
of atoms on both sides.
Record counts EVERY TIME a change is made
NEVER change subscripts
Balancing by inspection = creating the balancing chart
7. Balancing Difficult Equations: Use fractions to represent odd ratios, then
multiply the whole equation to balance
8. Physical States (4): (s) solid,
(l) liquid,
, (g) gas,
(aq) aqueous / dissolved in water
i.e. 2 Na(s) + 2 H20(l) -> 2 NaOH (aq) +
H2 (g) 9. Special Conditions: written
above the arrow triangle = heat
wa
vel
en
gth
hv
(lig
ht)
30 degrees (temp where it took place)
element symbol (catalyst)
10. molecular equation: chemical equation in which all reactants and
products are represented as neutral substances
NOTE: Ionic substances dissociate into ions when dissolved in water
