WorksheetsAnnie's Chemistry topic 1 and 2 quiz
Total questions: 20
Worksheet time: 47mins
Which compound has the empirical formula with the greatest mass?
C2H6
C4H10
C5H10
C6H6
What amount (in moles) is present in 2.0 g of Sodium Hydroxide, NaOH? Present your answer in 2 significant figures
(a)
How many Hydrogen atoms are contained in 1 mole of Ethanol, C2H5OH?
5
6
1.0×1023
3.6×1024
What amount of NaCl (in moles) is required to prepare 250 cm3 of a 0.200 mol dm–3 solution? Present your answer in 3 significant figures
(a)
20 cm3 of N2 reacts with 30 cm3 of H2 gas to form ammonia gas NH3. What is the total volume and composition of the remaining gas mixture, assuming constant temperature and pressure
10 cm3 of N2 and 20 cm3 of NH3
10 cm3 of H2 and 20 cm3 of NH3
10 cm3 of N2 and 20 cm3 of H2
10 cm3 of H2 and 20 cm3 of N2
What volume of 0.250 M H2SO4 in cm3 is needed to react completely with 13.5 g of NaOH during the production of water and salt?
H2SO4 + 2NaOH -> Na2SO4 + 2H2O
(a)
2.60 mol Pb(NO3)2 reacting with 3.00 mol AlCl3. Which element is in excess?
Pb(NO3)2
AlCl3
Al(NO3)3
PbCl2
__C2H2 + __O2 → __ CO2 + __ H2O
What's the sum of coefficients after balancing?
5
6
12
13
What will happen to the volume of a fixed mass of gas when its pressure and temperature
(in Kelvin) are both doubled?
It will not change.
It will increase.
It will decrease.
The change cannot be predicted.
Which graph illustrates the relationship between temperature and volume of a fixed mass of gas?
25%
50%
75%
100%
What's the electron configuration of Cu (Z=29)?
[Ar] 3d9 4s2
[Ar] 3d10 4s2
[Ar] 3d10 4s1
[Ar] 3d9 4s1
What is the electron configuration of Cr (Z=24)?
[Ar] 3d⁵ 4s¹
[Ar] 3d4 4s2
[Ar] 3d6
[Ar] 3d6 4s¹
What series does the visible light region correspond to in the hydrogen emission spectrum?
Bahmer
Lyman
Paschen
Luukwook
What is the electron configuration for an atom with Z = 22?
Energy levels for an electron in a hydrogen atom are
evenly spaced.
farther apart near the nucleus.
closer together near the nucleus.
arranged randomly.
A certain sample of element Z contains 60% of 69Z and 40% of 71Z. What is the relative atomic mass of element Z in this sample? (answer in 3 s.f.)
(a)
Which statement is correct about a line emission spectrum?
Electrons absorb energy as they move from low to high energy levels.
Electrons absorb energy as they move from high to low energy levels.
Electrons release energy as they move from low to high energy levels.
Electrons release energy as they move from high to low energy levels.
What is the correct sequence for the processes occurring in a mass spectrometer?
vaporization, ionization, acceleration, deflection
vaporization, acceleration, ionization, deflection
ionization, vaporization, acceleration, deflection
ionization, vaporization, deflection, acceleration
in cm3?
50
100
200
800
