WorksheetsSCIENCE 9 INTERVENTION LONG TEST
Total questions: 10
Worksheet time: 30mins
1. How many atoms are there in 1 mole of silver?
A. 1.66 x 10-21 atoms
B. 6.022 x 1023 atoms
C. 6.22 x 1023 atoms
D. .2x 1024 atoms
2 What is the mass of 1 mole of silver?
A. 197.0 g
B. 0.0093 g
C. 107.9 g
0.0051 g
3. What is the mass of 0.600 moles of silver?
a. 64.7 g
b. 0.006 g
c. 108 g
d. 107.96 g
4. How many atoms are present in 35.8 grams of sodium?
a. 137.3 atoms
b. 157 atoms
c 2.16 x 1021 atoms
d. 1.57 x 1023 atoms
5. What is the mass of a mole of ammonium hydroxide (NH4OH)?
a. 35.05 g
b. 0.0285 g
c. 30.09 g
d. 21.02 g
6. If the first and second energy levels of an atom are full, then what would be the total number of electrons in the atom?
a. 6
b. 8
c. 10
d. 18
7. Which atomic model is proposed by Schrodinger?
Nuclear model
Planetary model
raisin bread model
quantum mechanical model
8. What are the orbitals present in the fifth principal energy level?
A. s orbital
B. s, p orbitals
C. s, p, d orbitals
D. s, p, d and f orbitals
9. How many orbitals are in the third principal energy level?
3
6
9
12
10. For a neutral atom with the electron configuration of 1s2 2s2 2p5 3s1, which statement is false?
A. The atomic number is ten.
B. The 1s and 2s orbitals are filled
C. The atom is in the ground state
D. The atom is in the excited state
