Name: ____________________________________
Teacher: Mr. gerraputa
1. Which particle diagram represents one pure
substance, only?
1. 7. Which Kelvin temperatures represent, respectively,
the normal freezing point and the normal boiling point of water?
1. 0 K and 273 K 3. 100 K and 273 K
2. 0 K and 100 K 4. 273 K and 373 K
3. 8. The formula for calcium cyanide is
1. CaCN2 3. Ca(CN)2
2. CaSCN2 4. Ca(SCN)2
2. 4. 9. The graph represents a solid heated at a uniform rate,
starting at a temperature below its melting point.
2. What is the empirical formula of a compound with
the molecular formula N2 O4 ?
1. 2. 3. 4. 3. NO
NO2
N2 O
N2 O3
Which equation represents the phase change called
sublimation?
1. CO2 (s) → CO2 (g)
2. H2 O(s) → H2 O( )
3. H2 O( ) → H2 O(g)
4. NaCl( ) → NaCl(s)
4. Given the incomplete equation: 2N2 O5 (g) → _____
Which set of products completes and balances the
incomplete equation?
1. 2N2 (g) + 3H2 (g)
2. 2N2 (g) + 2O2 (g)
3. 4NO2 (g) + O2 (g)
4. 4NO(g) + 5O2 (g)
5. Which formula represents lead (II) phosphate?
1. 2. 3. 4. 6. PbPO4
Pb4 PO4
Pb3 (PO4 )2
Pb2 (PO4 )3
What occurs when the temperature of 10.0 grams of
water is changed from 15.5°C to 14.5°C?
1. The water absorbs 42 joules.
2. The water releases 42 joules.
3. The water absorbs 4200 joules.
4. The water releases 4200 joules.
Once the solid has reached its melting point, how many minutes
are required to completely melt the solid?
1. 6 min 3. 8 min
2. 2 min 4. 4 min
10. What is the gram formula mass of Li2 SO4 ?
1. 54g 3. 110g
2. 55g 4. 206g
11. The number of joules per gram required to melt ice at
its melting point is called
1. sublimation
3. heat of vaporization
2. vapor pressure 4. heat of fusion
12. The graph represents the uniform heating of a solid, starting below its melting point.
Which portion of the graph shows the solid and liquid phase existing in equilibrium?
1. AB 3. CD
2. BC 4. DE
13. The temperature of a sample of water is changed from 10°C to 30°C. The same change in Kelvins would be
1. 20 3. 273
2. 100 4. 303
14. Which kelvin temperature is equal to 56°C?
1. -329 K 3. 217 K
2. -217 K 4. 329 K
15. Given the reaction: CH4 (g) + 2O2 (g) → CO2 (g) + 2H2 O(g)
How many moles of oxygen are needed for the complete combustion of 3.0 moles of CH4 (g)?
1. 6.0 moles 3. 3.0 moles
2. 2.0 moles 4. 4.0 moles
16. What is the molecular formula of a compound with the empirical formula P2 O5 and a gram-molecular mass of 284 grams?
1. 2. 3. 4. 17. P2 O5
P5 O2
P10O4
P4 O10
The amount of energy needed to change a given mass of ice to water at constant temperature is called the heat of
1. condensation 3. fusion
2. crystallization 4. formation
18. The graph represents the relationship between
temperature and time as heat was added uniformly to a
substance starting at a solid below its melting point.
21. Which equation represents a double replacement
reaction?
1. 2 Na + 2 H2 O → 2 NaOH + H2
2. CaCO3 → CaO + CO2
3. LiOH + HCl → LiCl + H2 O
4. CH4 + 2 O2 → CO2 + 2 H2 O
22. Given the balanced equation: 2KClO3 → 2KCl + 3O2
Which type of reaction is represented by this equation?
1. synthesis
3. single replacement
2. decomposition 4. double replacement
23. During the BC portion of the curve, the average kinetic energy
of the molecules of the substance
1. 2. 3. 4. 19. increases and the potential energy increases
decreases and the potential energy increases
remains the same and the potential energy increases
remains the same and the potential energy decreases
20. present in one mole of Mg(ClO3 )2 ?
1. 5 3. 3
2. 2 4. 6
24. Given the unbalanced equation: What is the coefficient of O2 when the equation is balanced
correctly using the smallest whole-number coefficients?
1. 1 3. 3
2. 2 4. 4
Which set of properties does a substance such as
CO2 (g) have?
1. 2. 3. 4. What is the percent by mass of oxygen in Fe2 O3
(formula mass = 160)?
1. 16% 3. 56%
2. 30.% 4. 70.%
What is the total number of moles of oxygen atoms
25. definite shape and definite volume
definite shape but no definite volume
no definite shape but definite volume
no definite shape and no definite volume
The heat of fusion of a compound is 333.6 joules per
gram. What is the total number of joules of heat that must be
absorbed by a 15.0-gram sample to change the compound from
solid to liquid at its melting point?
1. 1304J 3. 420J
2. 168J 4. 5004J
Answer Key for IA #2
1. 1 10. 3 19. 2
2. 2 11. 4 20. 3
3. 1 12. 2 21. 3
4. 3 13. 1 22. 2
5. 3 14. 4 23. 4
6. 2 15. 1 24. 4
7. 4 16. 4 25. 4
8. 3 17. 3 9. 4 18. 3